<?xml version="1.0" encoding="UTF-8"?>

<!--XBRL Document Created with the Workiva Platform-->
<!--Copyright 2025 Workiva-->
<!--r:de68d1c1-06bf-4369-abdb-78dc0737186c,g:2b1947cd-4666-4a61-a5e2-8fded0bf18d2-->
<xs:schema xmlns:xs="http://www.w3.org/2001/XMLSchema" xmlns:link="http://www.xbrl.org/2003/linkbase" xmlns:scor="http://www.comscore.com/20241231" xmlns:xbrli="http://www.xbrl.org/2003/instance" xmlns:dtr-types1="http://www.xbrl.org/dtr/type/2020-01-21" xmlns:xbrldt="http://xbrl.org/2005/xbrldt" xmlns:dtr-types="http://www.xbrl.org/dtr/type/2022-03-31" attributeFormDefault="unqualified" elementFormDefault="qualified" targetNamespace="http://www.comscore.com/20241231">
  <xs:import namespace="http://fasb.org/srt/2024" schemaLocation="https://xbrl.fasb.org/srt/2024/elts/srt-2024.xsd"/>
  <xs:import namespace="http://fasb.org/us-gaap/2024" schemaLocation="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd"/>
  <xs:import namespace="http://www.xbrl.org/2003/instance" schemaLocation="http://www.xbrl.org/2003/xbrl-instance-2003-12-31.xsd"/>
  <xs:import namespace="http://www.xbrl.org/2003/linkbase" schemaLocation="http://www.xbrl.org/2003/xbrl-linkbase-2003-12-31.xsd"/>
  <xs:import namespace="http://www.xbrl.org/dtr/type/2020-01-21" schemaLocation="https://www.xbrl.org/dtr/type/2020-01-21/types.xsd"/>
  <xs:import namespace="http://www.xbrl.org/dtr/type/2022-03-31" schemaLocation="https://www.xbrl.org/dtr/type/2022-03-31/types.xsd"/>
  <xs:import namespace="http://xbrl.org/2005/xbrldt" schemaLocation="http://www.xbrl.org/2005/xbrldt-2005.xsd"/>
  <xs:import namespace="http://xbrl.sec.gov/country/2024" schemaLocation="https://xbrl.sec.gov/country/2024/country-2024.xsd"/>
  <xs:import namespace="http://xbrl.sec.gov/cyd-af-sub/2024" schemaLocation="https://xbrl.sec.gov/cyd/2024/cyd-af-sub-2024.xsd"/>
  <xs:import namespace="http://xbrl.sec.gov/dei/2024" schemaLocation="https://xbrl.sec.gov/dei/2024/dei-2024.xsd"/>
  <xs:import namespace="http://xbrl.sec.gov/ecd/2024" schemaLocation="https://xbrl.sec.gov/ecd/2024/ecd-2024.xsd"/>
  <xs:annotation>
    <xs:appinfo>
      <link:linkbaseRef xmlns:xlink="http://www.w3.org/1999/xlink" xlink:arcrole="http://www.w3.org/1999/xlink/properties/linkbase" xlink:href="scor-20241231_pre.xml" xlink:role="http://www.xbrl.org/2003/role/presentationLinkbaseRef" xlink:type="simple"/>
      <link:linkbaseRef xmlns:xlink="http://www.w3.org/1999/xlink" xlink:arcrole="http://www.w3.org/1999/xlink/properties/linkbase" xlink:href="scor-20241231_def.xml" xlink:role="http://www.xbrl.org/2003/role/definitionLinkbaseRef" xlink:type="simple"/>
      <link:linkbaseRef xmlns:xlink="http://www.w3.org/1999/xlink" xlink:arcrole="http://www.w3.org/1999/xlink/properties/linkbase" xlink:href="scor-20241231_lab.xml" xlink:role="http://www.xbrl.org/2003/role/labelLinkbaseRef" xlink:type="simple"/>
      <link:linkbaseRef xmlns:xlink="http://www.w3.org/1999/xlink" xlink:arcrole="http://www.w3.org/1999/xlink/properties/linkbase" xlink:href="scor-20241231_cal.xml" xlink:role="http://www.xbrl.org/2003/role/calculationLinkbaseRef" xlink:type="simple"/>
      <link:roleType id="CoverPage" roleURI="http://www.comscore.com/role/CoverPage">
        <link:definition>0000001 - Document - Cover Page</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="AuditInformation" roleURI="http://www.comscore.com/role/AuditInformation">
        <link:definition>0000002 - Document - Audit Information</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="CONSOLIDATEDBALANCESHEETS" roleURI="http://www.comscore.com/role/CONSOLIDATEDBALANCESHEETS">
        <link:definition>9952151 - Statement - CONSOLIDATED BALANCE SHEETS</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="CONSOLIDATEDBALANCESHEETSParenthetical" roleURI="http://www.comscore.com/role/CONSOLIDATEDBALANCESHEETSParenthetical">
        <link:definition>9952152 - Statement - CONSOLIDATED BALANCE SHEETS (Parenthetical)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="CONSOLIDATEDSTATEMENTSOFOPERATIONSANDCOMPREHENSIVELOSS" roleURI="http://www.comscore.com/role/CONSOLIDATEDSTATEMENTSOFOPERATIONSANDCOMPREHENSIVELOSS">
        <link:definition>9952153 - Statement - CONSOLIDATED STATEMENTS OF OPERATIONS AND COMPREHENSIVE LOSS</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="CONSOLIDATEDSTATEMENTSOFOPERATIONSANDCOMPREHENSIVELOSSParenthetical" roleURI="http://www.comscore.com/role/CONSOLIDATEDSTATEMENTSOFOPERATIONSANDCOMPREHENSIVELOSSParenthetical">
        <link:definition>9952154 - Statement - CONSOLIDATED STATEMENTS OF OPERATIONS AND COMPREHENSIVE LOSS (Parenthetical)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="CONSOLIDATEDSTATEMENTOFCHANGESINCONVERTIBLEREDEEMABLEPREFERREDSTOCKANDSTOCKHOLDERSEQUITYDEFICIT" roleURI="http://www.comscore.com/role/CONSOLIDATEDSTATEMENTOFCHANGESINCONVERTIBLEREDEEMABLEPREFERREDSTOCKANDSTOCKHOLDERSEQUITYDEFICIT">
        <link:definition>9952155 - Statement - CONSOLIDATED STATEMENT OF CHANGES IN CONVERTIBLE REDEEMABLE PREFERRED STOCK AND STOCKHOLDERS' EQUITY (DEFICIT)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="CONSOLIDATEDSTATEMENTSOFCASHFLOWS" roleURI="http://www.comscore.com/role/CONSOLIDATEDSTATEMENTSOFCASHFLOWS">
        <link:definition>9952156 - Statement - CONSOLIDATED STATEMENTS OF CASH FLOWS</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="CONSOLIDATEDSTATEMENTSOFCASHFLOWSParenthetical" roleURI="http://www.comscore.com/role/CONSOLIDATEDSTATEMENTSOFCASHFLOWSParenthetical">
        <link:definition>9952157 - Statement - CONSOLIDATED STATEMENTS OF CASH FLOWS (Parenthetical)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="Organization" roleURI="http://www.comscore.com/role/Organization">
        <link:definition>9952158 - Disclosure - Organization</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="SummaryofSignificantAccountingPolicies" roleURI="http://www.comscore.com/role/SummaryofSignificantAccountingPolicies">
        <link:definition>9952159 - Disclosure - Summary of Significant Accounting Policies</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="RevenueRecognition" roleURI="http://www.comscore.com/role/RevenueRecognition">
        <link:definition>9952160 - Disclosure - Revenue Recognition</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="ConvertibleRedeemablePreferredStockandStockholdersEquityDeficit" roleURI="http://www.comscore.com/role/ConvertibleRedeemablePreferredStockandStockholdersEquityDeficit">
        <link:definition>9952161 - Disclosure - Convertible Redeemable Preferred Stock and Stockholders' Equity (Deficit)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="Debt" roleURI="http://www.comscore.com/role/Debt">
        <link:definition>9952162 - Disclosure - Debt</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="FairValueMeasurements" roleURI="http://www.comscore.com/role/FairValueMeasurements">
        <link:definition>9952163 - Disclosure - Fair Value Measurements</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="PropertyandEquipment" roleURI="http://www.comscore.com/role/PropertyandEquipment">
        <link:definition>9952164 - Disclosure - Property and Equipment</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="Leases" roleURI="http://www.comscore.com/role/Leases">
        <link:definition>9952165 - Disclosure - Leases</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="GoodwillandIntangibleAssets" roleURI="http://www.comscore.com/role/GoodwillandIntangibleAssets">
        <link:definition>9952166 - Disclosure - Goodwill and Intangible Assets</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="AccruedExpenses" roleURI="http://www.comscore.com/role/AccruedExpenses">
        <link:definition>9952167 - Disclosure - Accrued Expenses</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="CommitmentsandContingencies" roleURI="http://www.comscore.com/role/CommitmentsandContingencies">
        <link:definition>9952168 - Disclosure - Commitments and Contingencies</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="IncomeTaxes" roleURI="http://www.comscore.com/role/IncomeTaxes">
        <link:definition>9952169 - Disclosure - Income Taxes</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="RelatedPartyTransactions" roleURI="http://www.comscore.com/role/RelatedPartyTransactions">
        <link:definition>9952170 - Disclosure - Related Party Transactions</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="SegmentInformation" roleURI="http://www.comscore.com/role/SegmentInformation">
        <link:definition>9952171 - Disclosure - Segment Information</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="OrganizationalRestructuring" roleURI="http://www.comscore.com/role/OrganizationalRestructuring">
        <link:definition>9952172 - Disclosure - Organizational Restructuring</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="SummaryofSignificantAccountingPoliciesPolicies" roleURI="http://www.comscore.com/role/SummaryofSignificantAccountingPoliciesPolicies">
        <link:definition>9955511 - Disclosure - Summary of Significant Accounting Policies (Policies)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="SummaryofSignificantAccountingPoliciesTables" roleURI="http://www.comscore.com/role/SummaryofSignificantAccountingPoliciesTables">
        <link:definition>9955512 - Disclosure - Summary of Significant Accounting Policies (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="RevenueRecognitionTables" roleURI="http://www.comscore.com/role/RevenueRecognitionTables">
        <link:definition>9955513 - Disclosure - Revenue Recognition (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="ConvertibleRedeemablePreferredStockandStockholdersEquityDeficitTables" roleURI="http://www.comscore.com/role/ConvertibleRedeemablePreferredStockandStockholdersEquityDeficitTables">
        <link:definition>9955514 - Disclosure - Convertible Redeemable Preferred Stock and Stockholders' Equity (Deficit) (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="DebtTables" roleURI="http://www.comscore.com/role/DebtTables">
        <link:definition>9955515 - Disclosure - Debt (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="FairValueMeasurementsTables" roleURI="http://www.comscore.com/role/FairValueMeasurementsTables">
        <link:definition>9955516 - Disclosure - Fair Value Measurements (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="PropertyandEquipmentTables" roleURI="http://www.comscore.com/role/PropertyandEquipmentTables">
        <link:definition>9955517 - Disclosure - Property and Equipment (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="LeasesTables" roleURI="http://www.comscore.com/role/LeasesTables">
        <link:definition>9955518 - Disclosure - Leases (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="GoodwillandIntangibleAssetsTables" roleURI="http://www.comscore.com/role/GoodwillandIntangibleAssetsTables">
        <link:definition>9955519 - Disclosure - Goodwill and Intangible Assets (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="AccruedExpensesTables" roleURI="http://www.comscore.com/role/AccruedExpensesTables">
        <link:definition>9955520 - Disclosure - Accrued Expenses (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="CommitmentsandContingenciesTables" roleURI="http://www.comscore.com/role/CommitmentsandContingenciesTables">
        <link:definition>9955521 - Disclosure - Commitments and Contingencies (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="IncomeTaxesTables" roleURI="http://www.comscore.com/role/IncomeTaxesTables">
        <link:definition>9955522 - Disclosure - Income Taxes (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="RelatedPartyTransactionsTables" roleURI="http://www.comscore.com/role/RelatedPartyTransactionsTables">
        <link:definition>9955523 - Disclosure - Related Party Transactions (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="SegmentInformationTables" roleURI="http://www.comscore.com/role/SegmentInformationTables">
        <link:definition>9955524 - Disclosure - Segment Information (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="OrganizationalRestructuringTables" roleURI="http://www.comscore.com/role/OrganizationalRestructuringTables">
        <link:definition>9955525 - Disclosure - Organizational Restructuring (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="SummaryofSignificantAccountingPoliciesNarrativeDetails" roleURI="http://www.comscore.com/role/SummaryofSignificantAccountingPoliciesNarrativeDetails">
        <link:definition>9955526 - Disclosure - Summary of Significant Accounting Policies - Narrative (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="SummaryofSignificantAccountingPoliciesScheduleofAllowanceforDoubtfulAccountsDetails" roleURI="http://www.comscore.com/role/SummaryofSignificantAccountingPoliciesScheduleofAllowanceforDoubtfulAccountsDetails">
        <link:definition>9955527 - Disclosure - Summary of Significant Accounting Policies - Schedule of Allowance for Doubtful Accounts (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="SummaryofSignificantAccountingPoliciesScheduleofUsefulLivesofFiniteLivedIntangibleAssetsDetails" roleURI="http://www.comscore.com/role/SummaryofSignificantAccountingPoliciesScheduleofUsefulLivesofFiniteLivedIntangibleAssetsDetails">
        <link:definition>9955528 - Disclosure - Summary of Significant Accounting Policies - Schedule of Useful Lives of Finite Lived Intangible Assets (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="SummaryofSignificantAccountingPoliciesScheduleofOtherIncomeExpenseNetDetails" roleURI="http://www.comscore.com/role/SummaryofSignificantAccountingPoliciesScheduleofOtherIncomeExpenseNetDetails">
        <link:definition>9955529 - Disclosure - Summary of Significant Accounting Policies - Schedule of Other Income (Expense), Net (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="SummaryofSignificantAccountingPoliciesScheduleofCommonStockEquivalentsforSecuritiesOutstandingExcludedfromComputationofDilutedNetLossperShareDetails" roleURI="http://www.comscore.com/role/SummaryofSignificantAccountingPoliciesScheduleofCommonStockEquivalentsforSecuritiesOutstandingExcludedfromComputationofDilutedNetLossperShareDetails">
        <link:definition>9955530 - Disclosure - Summary of Significant Accounting Policies - Schedule of Common Stock Equivalents for Securities Outstanding Excluded from Computation of Diluted Net Loss per Share (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="RevenueRecognitionNarrativeDetails" roleURI="http://www.comscore.com/role/RevenueRecognitionNarrativeDetails">
        <link:definition>9955531 - Disclosure - Revenue Recognition - Narrative (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="RevenueRecognitionScheduleofDisaggregationofRevenueDetails" roleURI="http://www.comscore.com/role/RevenueRecognitionScheduleofDisaggregationofRevenueDetails">
        <link:definition>9955532 - Disclosure - Revenue Recognition - Schedule of Disaggregation of Revenue (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="RevenueRecognitionScheduleofContractBalancesDetails" roleURI="http://www.comscore.com/role/RevenueRecognitionScheduleofContractBalancesDetails">
        <link:definition>9955533 - Disclosure - Revenue Recognition - Schedule of Contract Balances (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="RevenueRecognitionScheduleofChangesinContractBalancesDetails" roleURI="http://www.comscore.com/role/RevenueRecognitionScheduleofChangesinContractBalancesDetails">
        <link:definition>9955534 - Disclosure - Revenue Recognition - Schedule of Changes in Contract Balances (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="RevenueRecognitionScheduleofTransactionPriceAllocatedtotheRemainingPerformanceObligationsDetails" roleURI="http://www.comscore.com/role/RevenueRecognitionScheduleofTransactionPriceAllocatedtotheRemainingPerformanceObligationsDetails">
        <link:definition>9955535 - Disclosure - Revenue Recognition - Schedule of Transaction Price Allocated to the Remaining Performance Obligations (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="RevenueRecognitionScheduleofTransactionPriceAllocatedtotheRemainingPerformanceObligationsDetails_1" roleURI="http://www.comscore.com/role/RevenueRecognitionScheduleofTransactionPriceAllocatedtotheRemainingPerformanceObligationsDetails_1">
        <link:definition>9955535 - Disclosure - Revenue Recognition - Schedule of Transaction Price Allocated to the Remaining Performance Obligations (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="ConvertibleRedeemablePreferredStockandStockholdersEquityDeficitNarrativeDetails" roleURI="http://www.comscore.com/role/ConvertibleRedeemablePreferredStockandStockholdersEquityDeficitNarrativeDetails">
        <link:definition>9955536 - Disclosure - Convertible Redeemable Preferred Stock and Stockholders' Equity (Deficit) - Narrative (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="ConvertibleRedeemablePreferredStockandStockholdersEquityDeficitScheduleofWeightedAverageAssumptionsDetails" roleURI="http://www.comscore.com/role/ConvertibleRedeemablePreferredStockandStockholdersEquityDeficitScheduleofWeightedAverageAssumptionsDetails">
        <link:definition>9955537 - Disclosure - Convertible Redeemable Preferred Stock and Stockholders' Equity (Deficit) - Schedule of Weighted-Average Assumptions (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="ConvertibleRedeemablePreferredStockandStockholdersEquityDeficitScheduleofStockOptionActivityDetails" roleURI="http://www.comscore.com/role/ConvertibleRedeemablePreferredStockandStockholdersEquityDeficitScheduleofStockOptionActivityDetails">
        <link:definition>9955538 - Disclosure - Convertible Redeemable Preferred Stock and Stockholders' Equity (Deficit) - Schedule of Stock Option Activity (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="ConvertibleRedeemablePreferredStockandStockholdersEquityDeficitScheduleofExercisePriceRangeDetails" roleURI="http://www.comscore.com/role/ConvertibleRedeemablePreferredStockandStockholdersEquityDeficitScheduleofExercisePriceRangeDetails">
        <link:definition>9955539 - Disclosure - Convertible Redeemable Preferred Stock and Stockholders' Equity (Deficit) - Schedule of Exercise Price Range (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="ConvertibleRedeemablePreferredStockandStockholdersEquityDeficitScheduleofNonvestedStockAwardsDetails" roleURI="http://www.comscore.com/role/ConvertibleRedeemablePreferredStockandStockholdersEquityDeficitScheduleofNonvestedStockAwardsDetails">
        <link:definition>9955540 - Disclosure - Convertible Redeemable Preferred Stock and Stockholders' Equity (Deficit) - Schedule of Nonvested Stock Awards (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="DebtNarrativeDetails" roleURI="http://www.comscore.com/role/DebtNarrativeDetails">
        <link:definition>9955541 - Disclosure - Debt - Narrative (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="DebtScheduleofTotalLongTermDebtObligationsDetails" roleURI="http://www.comscore.com/role/DebtScheduleofTotalLongTermDebtObligationsDetails">
        <link:definition>9955542 - Disclosure - Debt - Schedule of Total Long-Term Debt Obligations (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="DebtScheduleofFuturePrincipalPaymentsfortheTotalLongTermDebtDetails" roleURI="http://www.comscore.com/role/DebtScheduleofFuturePrincipalPaymentsfortheTotalLongTermDebtDetails">
        <link:definition>9955543 - Disclosure - Debt - Schedule of Future Principal Payments for the Total Long-Term Debt (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="FairValueMeasurementsScheduleofAssetsandLiabilitiesMeasuredonRecurringBasisDetails" roleURI="http://www.comscore.com/role/FairValueMeasurementsScheduleofAssetsandLiabilitiesMeasuredonRecurringBasisDetails">
        <link:definition>9955544 - Disclosure - Fair Value Measurements - Schedule of Assets and Liabilities Measured on Recurring Basis (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="FairValueMeasurementsScheduleofReconciliationofLevel3FairValuedInstrumentsDetails" roleURI="http://www.comscore.com/role/FairValueMeasurementsScheduleofReconciliationofLevel3FairValuedInstrumentsDetails">
        <link:definition>9955545 - Disclosure - Fair Value Measurements - Schedule of Reconciliation of Level 3 Fair Valued Instruments (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="FairValueMeasurementsScheduleofValuationTechniquesofLevel3LiabilitiesDetails" roleURI="http://www.comscore.com/role/FairValueMeasurementsScheduleofValuationTechniquesofLevel3LiabilitiesDetails">
        <link:definition>9955546 - Disclosure - Fair Value Measurements - Schedule of Valuation Techniques of Level 3 Liabilities (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="FairValueMeasurementsNarrativeDetails" roleURI="http://www.comscore.com/role/FairValueMeasurementsNarrativeDetails">
        <link:definition>9955547 - Disclosure - Fair Value Measurements - Narrative (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="PropertyandEquipmentScheduleofPropertyandEquipmentUnderCapitalLeaseObligationsDetails" roleURI="http://www.comscore.com/role/PropertyandEquipmentScheduleofPropertyandEquipmentUnderCapitalLeaseObligationsDetails">
        <link:definition>9955548 - Disclosure - Property and Equipment - Schedule of Property and Equipment Under Capital Lease Obligations (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="PropertyandEquipmentNarrativeDetails" roleURI="http://www.comscore.com/role/PropertyandEquipmentNarrativeDetails">
        <link:definition>9955549 - Disclosure - Property and Equipment - Narrative (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="LeasesNarrativeDetails" roleURI="http://www.comscore.com/role/LeasesNarrativeDetails">
        <link:definition>9955550 - Disclosure - Leases - Narrative (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="LeasesScheduleofFinanceandOperatingLeaseCostDetails" roleURI="http://www.comscore.com/role/LeasesScheduleofFinanceandOperatingLeaseCostDetails">
        <link:definition>9955551 - Disclosure - Leases - Schedule of Finance and Operating Lease Cost (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="LeasesScheduleofMaturitiesofFinanceandOperatingLeaseLiabilitiesDetails" roleURI="http://www.comscore.com/role/LeasesScheduleofMaturitiesofFinanceandOperatingLeaseLiabilitiesDetails">
        <link:definition>9955552 - Disclosure - Leases - Schedule of Maturities of Finance and Operating Lease Liabilities (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="LeasesScheduleofMaturitiesofFinanceandOperatingLeaseLiabilitiesDetails_1" roleURI="http://www.comscore.com/role/LeasesScheduleofMaturitiesofFinanceandOperatingLeaseLiabilitiesDetails_1">
        <link:definition>9955552 - Disclosure - Leases - Schedule of Maturities of Finance and Operating Lease Liabilities (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="LeasesScheduleofFutureExpectedCashReceiptsfromSubleasesDetails" roleURI="http://www.comscore.com/role/LeasesScheduleofFutureExpectedCashReceiptsfromSubleasesDetails">
        <link:definition>9955553 - Disclosure - Leases - Schedule of Future Expected Cash Receipts from Subleases (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="GoodwillandIntangibleAssetsNarrativeDetails" roleURI="http://www.comscore.com/role/GoodwillandIntangibleAssetsNarrativeDetails">
        <link:definition>9955554 - Disclosure - Goodwill and Intangible Assets - Narrative (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="GoodwillandIntangibleAssetsScheduleofCarryingValueofGoodwillDetails" roleURI="http://www.comscore.com/role/GoodwillandIntangibleAssetsScheduleofCarryingValueofGoodwillDetails">
        <link:definition>9955555 - Disclosure - Goodwill and Intangible Assets - Schedule of Carrying Value of Goodwill (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="GoodwillandIntangibleAssetsScheduleofAcquiredIntangibleAssetsDetails" roleURI="http://www.comscore.com/role/GoodwillandIntangibleAssetsScheduleofAcquiredIntangibleAssetsDetails">
        <link:definition>9955556 - Disclosure - Goodwill and Intangible Assets - Schedule of Acquired Intangible Assets (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="GoodwillandIntangibleAssetsScheduleofWeightedAverageRemainingAmortizationPeriodDetails" roleURI="http://www.comscore.com/role/GoodwillandIntangibleAssetsScheduleofWeightedAverageRemainingAmortizationPeriodDetails">
        <link:definition>9955557 - Disclosure - Goodwill and Intangible Assets - Schedule of Weighted Average Remaining Amortization Period (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="GoodwillandIntangibleAssetsScheduleofEstimatedFutureAmortizationofAcquiredIntangibleAssetsDetail" roleURI="http://www.comscore.com/role/GoodwillandIntangibleAssetsScheduleofEstimatedFutureAmortizationofAcquiredIntangibleAssetsDetail">
        <link:definition>9955558 - Disclosure - Goodwill and Intangible Assets - Schedule of Estimated Future Amortization of Acquired Intangible Assets (Detail)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="AccruedExpensesDetails" roleURI="http://www.comscore.com/role/AccruedExpensesDetails">
        <link:definition>9955559 - Disclosure - Accrued Expenses (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="CommitmentsandContingenciesNarrativeDetails" roleURI="http://www.comscore.com/role/CommitmentsandContingenciesNarrativeDetails">
        <link:definition>9955560 - Disclosure - Commitments and Contingencies - Narrative (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="CommitmentandContingenciesScheduleofContractualObligationDetails" roleURI="http://www.comscore.com/role/CommitmentandContingenciesScheduleofContractualObligationDetails">
        <link:definition>9955561 - Disclosure - Commitment and Contingencies - Schedule of Contractual Obligation (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="IncomeTaxesScheduleofComponentofLossIncomeBeforeIncomeTaxDetails" roleURI="http://www.comscore.com/role/IncomeTaxesScheduleofComponentofLossIncomeBeforeIncomeTaxDetails">
        <link:definition>9955562 - Disclosure - Income Taxes - Schedule of Component of (Loss) Income Before Income Tax (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="IncomeTaxesScheduleofIncomeTaxProvisionBenefitDetails" roleURI="http://www.comscore.com/role/IncomeTaxesScheduleofIncomeTaxProvisionBenefitDetails">
        <link:definition>9955563 - Disclosure - Income Taxes - Schedule of Income Tax Provision (Benefit) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="IncomeTaxesScheduleofEffectiveIncomeTaxRateReconciliationDetails" roleURI="http://www.comscore.com/role/IncomeTaxesScheduleofEffectiveIncomeTaxRateReconciliationDetails">
        <link:definition>9955564 - Disclosure - Income Taxes - Schedule of Effective Income Tax Rate Reconciliation (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="IncomeTaxesNarrativeDetails" roleURI="http://www.comscore.com/role/IncomeTaxesNarrativeDetails">
        <link:definition>9955565 - Disclosure - Income Taxes - Narrative (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="IncomeTaxesScheduleofComponentsofNetDeferredIncomeTaxesDetails" roleURI="http://www.comscore.com/role/IncomeTaxesScheduleofComponentsofNetDeferredIncomeTaxesDetails">
        <link:definition>9955566 - Disclosure - Income Taxes - Schedule of Components of Net Deferred Income Taxes (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="IncomeTaxesScheduleofDeferredTaxAssetValuationAllowanceDetails" roleURI="http://www.comscore.com/role/IncomeTaxesScheduleofDeferredTaxAssetValuationAllowanceDetails">
        <link:definition>9955567 - Disclosure - Income Taxes - Schedule of Deferred Tax Asset Valuation Allowance (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="IncomeTaxesScheduleofUnrecognizedIncomeTaxBenefitsDetails" roleURI="http://www.comscore.com/role/IncomeTaxesScheduleofUnrecognizedIncomeTaxBenefitsDetails">
        <link:definition>9955568 - Disclosure - Income Taxes - Schedule of Unrecognized Income Tax Benefits (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="RelatedPartyTransactionsNarrativeDetails" roleURI="http://www.comscore.com/role/RelatedPartyTransactionsNarrativeDetails">
        <link:definition>9955569 - Disclosure - Related Party Transactions - Narrative (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="RelatedPartyTransactionsScheduleofTransactionwithRelatedPartiesDetails" roleURI="http://www.comscore.com/role/RelatedPartyTransactionsScheduleofTransactionwithRelatedPartiesDetails">
        <link:definition>9955570 - Disclosure - Related Party Transactions - Schedule of Transaction with Related Parties (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="SegmentInformationNarrativeDetails" roleURI="http://www.comscore.com/role/SegmentInformationNarrativeDetails">
        <link:definition>9955571 - Disclosure - Segment Information - Narrative (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="SegmentInformationScheduleofFinancialInformationthatisPresentedtotheCODMDetails" roleURI="http://www.comscore.com/role/SegmentInformationScheduleofFinancialInformationthatisPresentedtotheCODMDetails">
        <link:definition>9955572 - Disclosure - Segment Information - Schedule of Financial Information that is Presented to the CODM (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="OrganizationalRestructuringScheduleofCostsIncurredRelatedtotheRestructuringPlanDetails" roleURI="http://www.comscore.com/role/OrganizationalRestructuringScheduleofCostsIncurredRelatedtotheRestructuringPlanDetails">
        <link:definition>9955573 - Disclosure - Organizational Restructuring - Schedule of Costs Incurred Related to the Restructuring Plan (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="OrganizationalRestructuringScheduleofAccruedRestructuringExpensesandChangesinAccruedAmountsDetails" roleURI="http://www.comscore.com/role/OrganizationalRestructuringScheduleofAccruedRestructuringExpensesandChangesinAccruedAmountsDetails">
        <link:definition>9955574 - Disclosure - Organizational Restructuring - Schedule of Accrued Restructuring Expenses and Changes in Accrued Amounts (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
    </xs:appinfo>
  </xs:annotation>
  <xs:element id="scor_AuditInformationAbstract" abstract="true" name="AuditInformationAbstract" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="scor_ContractWithCustomerLiabilityCustomerAdvancesCurrent" abstract="false" name="ContractWithCustomerLiabilityCustomerAdvancesCurrent" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="scor_AccruedCostOfRevenuesNoncurrent" abstract="false" name="AccruedCostOfRevenuesNoncurrent" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="scor_ImpairmentOfLongLivedAssetsHeldForUseAndOperatingLeaseImpairmentLoss" abstract="false" name="ImpairmentOfLongLivedAssetsHeldForUseAndOperatingLeaseImpairmentLoss" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="scor_TemporaryEquityStockIssuedDuringPeriodSharesNewIssues" abstract="false" name="TemporaryEquityStockIssuedDuringPeriodSharesNewIssues" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:sharesItemType"/>
  <xs:element id="scor_IncreaseDecreaseInContractWithCustomerLiabilityAndCustomerAdvances" abstract="false" name="IncreaseDecreaseInContractWithCustomerLiabilityAndCustomerAdvances" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="scor_IncreaseDecreaseInOperatingLeaseLiabilities" abstract="false" name="IncreaseDecreaseInOperatingLeaseLiabilities" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="scor_ProceedsFromInsuranceFinancing" abstract="false" name="ProceedsFromInsuranceFinancing" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="scor_PaymentOfDividendsTemporaryEquity" abstract="false" name="PaymentOfDividendsTemporaryEquity" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="scor_PaymentsForPrincipalOnInsuranceFinancing" abstract="false" name="PaymentsForPrincipalOnInsuranceFinancing" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="scor_IssuanceOfConvertibleRedeemablePreferredStockValue" abstract="false" name="IssuanceOfConvertibleRedeemablePreferredStockValue" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="scor_TemporaryEquityDividendsAdjustmentNoncash" abstract="false" name="TemporaryEquityDividendsAdjustmentNoncash" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="scor_SettlementOfShareBasedCompensationLiabilitiesThroughIssuanceOfSharesAmount" abstract="false" name="SettlementOfShareBasedCompensationLiabilitiesThroughIssuanceOfSharesAmount" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="scor_ModificationOfOperatingRightOfUseAssets" abstract="false" name="ModificationOfOperatingRightOfUseAssets" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="scor_AccruedDebtIssuanceCosts" abstract="false" name="AccruedDebtIssuanceCosts" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="scor_TemporaryEquityStockIssuedDuringPeriodInitialFairValueAfterIssuanceCostsNewIssues" abstract="false" name="TemporaryEquityStockIssuedDuringPeriodInitialFairValueAfterIssuanceCostsNewIssues" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="scor_StockholdersEquityAndTemporaryEquityNoteDisclosureTextBlock" abstract="false" name="StockholdersEquityAndTemporaryEquityNoteDisclosureTextBlock" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:textBlockItemType"/>
  <xs:element id="scor_HostingArrangementImplementationCostsPolicyPolicyTextBlock" abstract="false" name="HostingArrangementImplementationCostsPolicyPolicyTextBlock" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:textBlockItemType"/>
  <xs:element id="scor_WarrantsLiabilityPolicyPolicyTextBlock" abstract="false" name="WarrantsLiabilityPolicyPolicyTextBlock" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:textBlockItemType"/>
  <xs:element id="scor_SellingAndMarketingPolicyTextBlock" abstract="false" name="SellingAndMarketingPolicyTextBlock" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:textBlockItemType"/>
  <xs:element id="scor_GeneralAndAdministrativeExpensesPolicyPolicyTextBlock" abstract="false" name="GeneralAndAdministrativeExpensesPolicyPolicyTextBlock" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:textBlockItemType"/>
  <xs:element id="scor_OtherIncomeExpensesPolicyTextBlock" abstract="false" name="OtherIncomeExpensesPolicyTextBlock" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:textBlockItemType"/>
  <xs:element id="scor_ScheduleOfAcquiredFiniteLivedIntangibleAssetsWeightedAverageRemainingUsefulLifeTableTableTextBlock" abstract="false" name="ScheduleOfAcquiredFiniteLivedIntangibleAssetsWeightedAverageRemainingUsefulLifeTableTableTextBlock" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:textBlockItemType"/>
  <xs:element id="scor_ScheduleOfDeferredTaxAssetsValuationAllowanceTableTextBlock" abstract="false" name="ScheduleOfDeferredTaxAssetsValuationAllowanceTableTextBlock" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:textBlockItemType"/>
  <xs:element id="scor_SummaryOfSignificantAccountingPoliciesTable" abstract="true" name="SummaryOfSignificantAccountingPoliciesTable" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrldt:hypercubeItem" type="xbrli:stringItemType"/>
  <xs:element id="scor_LibertyMember" abstract="true" name="LibertyMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="scor_QurateRetailIncMember" abstract="true" name="QurateRetailIncMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="scor_ShareableeIncMember" abstract="true" name="ShareableeIncMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="scor_EmployeesDirectorsandCertainConsultantsMember" abstract="true" name="EmployeesDirectorsandCertainConsultantsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="scor_SummaryOfSignificantAccountingPoliciesLineItems" abstract="true" name="SummaryOfSignificantAccountingPoliciesLineItems" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="scor_PreferredStockSpecialDividendThreshold" abstract="false" name="PreferredStockSpecialDividendThreshold" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="scor_NumberOfWhollyOwnedSubsidiaries" abstract="false" name="NumberOfWhollyOwnedSubsidiaries" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:integerItemType"/>
  <xs:element id="scor_ContingentConsiderationScheduledPayments" abstract="false" name="ContingentConsiderationScheduledPayments" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="scor_BusinessCombinationContingentConsiderationLiabilityExpectedToBeSettledInNextTwelveMonths" abstract="false" name="BusinessCombinationContingentConsiderationLiabilityExpectedToBeSettledInNextTwelveMonths" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="scor_OperatingLeaseRightOfUseAssetAndLeaseholdImprovementsMeasurementInput" abstract="false" name="OperatingLeaseRightOfUseAssetAndLeaseholdImprovementsMeasurementInput" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:decimalItemType"/>
  <xs:element id="scor_OperatingLeaseNumberOfOfficeSpacesAbandoned" abstract="false" name="OperatingLeaseNumberOfOfficeSpacesAbandoned" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:integerItemType"/>
  <xs:element id="scor_NonCashConsiderationIncludedInRevenue" abstract="false" name="NonCashConsiderationIncludedInRevenue" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="scor_NonCashConsiderationIncludedInCostOfRevenue" abstract="false" name="NonCashConsiderationIncludedInCostOfRevenue" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="scor_SharebasedCompensationArrangementbySharebasedPaymentAwardFairValueAssumptionsExpectedForfeituresRate" abstract="false" name="SharebasedCompensationArrangementbySharebasedPaymentAwardFairValueAssumptionsExpectedForfeituresRate" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:percentItemType"/>
  <xs:element id="scor_AcquiredMethodologiesTechnologyMember" abstract="true" name="AcquiredMethodologiesTechnologyMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="scor_AcquiredSoftwareMember" abstract="true" name="AcquiredSoftwareMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="scor_OtherMiscellaneousNonOperatingIncomeExpense" abstract="false" name="OtherMiscellaneousNonOperatingIncomeExpense" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="scor_ContingentConsiderationLiabilityThirdInstallmentMember" abstract="true" name="ContingentConsiderationLiabilityThirdInstallmentMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="scor_IncrementalCommonSharesAttributableToDilutiveEffectOfContingentlyIssuablePerShareRate" abstract="false" name="IncrementalCommonSharesAttributableToDilutiveEffectOfContingentlyIssuablePerShareRate" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="dtr-types1:perShareItemType"/>
  <xs:element id="scor_ContentAdMeasurementMember" abstract="true" name="ContentAdMeasurementMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="scor_ContentAndAdMeasurementSyndicatedAudienceMember" abstract="true" name="ContentAndAdMeasurementSyndicatedAudienceMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="scor_ContentAndAdMeasurementCrossPlatformSolutionsMember" abstract="true" name="ContentAndAdMeasurementCrossPlatformSolutionsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="scor_ResearchInsightSolutionsMember" abstract="true" name="ResearchInsightSolutionsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="scor_OtherCountryMember" abstract="true" name="OtherCountryMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="scor_ContractWithCustomerLiabilityIncreaseFromCashReceiptsOrAmountsBilledInAdvance" abstract="false" name="ContractWithCustomerLiabilityIncreaseFromCashReceiptsOrAmountsBilledInAdvance" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="scor_CharterCommunicationsHoldingCompanyLLCMember" abstract="true" name="CharterCommunicationsHoldingCompanyLLCMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="scor_PineInvestorLLCMember" abstract="true" name="PineInvestorLLCMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="scor_SeriesAWarrantMember" abstract="true" name="SeriesAWarrantMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="scor_EquityandIncentiveCompensationPlan2018Member" abstract="true" name="EquityandIncentiveCompensationPlan2018Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="scor_TimebasedRestrictedStockUnitsMember" abstract="true" name="TimebasedRestrictedStockUnitsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="scor_MarketBasedRestrictedStockUnitsMember" abstract="true" name="MarketBasedRestrictedStockUnitsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="scor_PerformancebasedRestrictedStockUnitsMember" abstract="true" name="PerformancebasedRestrictedStockUnitsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="scor_RestrictedStockAndRestrictedStockUnitsMember" abstract="true" name="RestrictedStockAndRestrictedStockUnitsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="scor_SaleOfStockConsiderationReceivedOnTransactionGross" abstract="false" name="SaleOfStockConsiderationReceivedOnTransactionGross" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="scor_TemporaryEquityDeferredDividendRatePercentage" abstract="false" name="TemporaryEquityDeferredDividendRatePercentage" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:pureItemType"/>
  <xs:element id="scor_TemporaryEquityDividendRatePercentage" abstract="false" name="TemporaryEquityDividendRatePercentage" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:percentItemType"/>
  <xs:element id="scor_TemporaryEquityVotingClassConversionRatio" abstract="false" name="TemporaryEquityVotingClassConversionRatio" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:pureItemType"/>
  <xs:element id="scor_TemporaryEquityVotingClassThresholdCommonStockCapForConversionSharesPercentage" abstract="false" name="TemporaryEquityVotingClassThresholdCommonStockCapForConversionSharesPercentage" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="dtr-types1:percentItemType"/>
  <xs:element id="scor_PreferredStockCumulativeDividendRatePercentage" abstract="false" name="PreferredStockCumulativeDividendRatePercentage" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="dtr-types1:percentItemType"/>
  <xs:element id="scor_TemporaryEquityConversionRatio" abstract="false" name="TemporaryEquityConversionRatio" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:pureItemType"/>
  <xs:element id="scor_AccumulatedDividendsPaid" abstract="false" name="AccumulatedDividendsPaid" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="scor_TemporaryEquityMandatoryConversionPercentageOfCommonStockOriginalPurchasePrice" abstract="false" name="TemporaryEquityMandatoryConversionPercentageOfCommonStockOriginalPurchasePrice" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="dtr-types1:percentItemType"/>
  <xs:element id="scor_TemporaryEquityMandatoryConversionProRataShareOfAggregateDividendsPaid" abstract="false" name="TemporaryEquityMandatoryConversionProRataShareOfAggregateDividendsPaid" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="scor_TemporaryEquityMandatoryConversionPeriod" abstract="false" name="TemporaryEquityMandatoryConversionPeriod" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:durationItemType"/>
  <xs:element id="scor_StockIssuedDuringPeriodSharesWarrantsExercised" abstract="false" name="StockIssuedDuringPeriodSharesWarrantsExercised" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:sharesItemType"/>
  <xs:element id="scor_ClassOfWarrantOrRightExercisablePeriod" abstract="false" name="ClassOfWarrantOrRightExercisablePeriod" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:durationItemType"/>
  <xs:element id="scor_SharebasedCompensationArrangementbySharebasedPaymentAwardRatioofReductionofNumberofAuthorizedSharesofCommonStockSubjecttoAwardsofOptionsRights" abstract="false" name="SharebasedCompensationArrangementbySharebasedPaymentAwardRatioofReductionofNumberofAuthorizedSharesofCommonStockSubjecttoAwardsofOptionsRights" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:sharesItemType"/>
  <xs:element id="scor_SharebasedCompensationArrangementbySharebasedPaymentAwardRatioofReductionofNumberofAuthorizedSharesofCommonStockSubjecttoAwardsOtherThanOptionsRights" abstract="false" name="SharebasedCompensationArrangementbySharebasedPaymentAwardRatioofReductionofNumberofAuthorizedSharesofCommonStockSubjecttoAwardsOtherThanOptionsRights" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:sharesItemType"/>
  <xs:element id="scor_ShareBasedCompensationArrangementByShareBasedPaymentAwardRatioOfAvailabilityOfNumberOfAuthorizedSharesOfCommonStockSubjectToAwardsOfOptionsRights" abstract="false" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardRatioOfAvailabilityOfNumberOfAuthorizedSharesOfCommonStockSubjectToAwardsOfOptionsRights" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:sharesItemType"/>
  <xs:element id="scor_ShareBasedCompensationArrangementByShareBasedPaymentAwardRatioOfAvailabilityOfNumberOfAuthorizedSharesOfCommonStockSubjectToAwardsOtherThanOptionsRights" abstract="false" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardRatioOfAvailabilityOfNumberOfAuthorizedSharesOfCommonStockSubjectToAwardsOtherThanOptionsRights" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:sharesItemType"/>
  <xs:element id="scor_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonVestedAggregateIntrinsicValue" abstract="false" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonVestedAggregateIntrinsicValue" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="scor_ShareBasedCompensationArrangementByShareBasedPaymentAwardExercisePeriodFollowingTermination" abstract="false" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardExercisePeriodFollowingTermination" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:durationItemType"/>
  <xs:element id="scor_ExercisePriceOneMember" abstract="true" name="ExercisePriceOneMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="scor_ExercisePriceTwoMember" abstract="true" name="ExercisePriceTwoMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="scor_CreditAgreementMember" abstract="true" name="CreditAgreementMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="scor_TermLoanMember" abstract="true" name="TermLoanMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="scor_ReferenceRateMember" abstract="true" name="ReferenceRateMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="scor_BeforeFirstAnniversaryMember" abstract="true" name="BeforeFirstAnniversaryMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="scor_BeforeSecondAnniversaryMember" abstract="true" name="BeforeSecondAnniversaryMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="scor_VariableRateComponentAxis" abstract="true" name="VariableRateComponentAxis" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrldt:dimensionItem" type="xbrli:stringItemType"/>
  <xs:element id="scor_VariableRateComponentDomain" abstract="true" name="VariableRateComponentDomain" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="scor_VariableRateComponentOneMember" abstract="true" name="VariableRateComponentOneMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="scor_DebtTermAxis" abstract="true" name="DebtTermAxis" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrldt:dimensionItem" type="xbrli:stringItemType"/>
  <xs:element id="scor_DebtCovenantDomain" abstract="true" name="DebtCovenantDomain" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="scor_DebtInstrumentIfTotalLeverageRatioIsGreaterThan2.25Member" abstract="true" name="DebtInstrumentIfTotalLeverageRatioIsGreaterThan2.25Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="scor_DebtInstrumentIfTotalLeverageRatioIsEqualToOrLessThan2.25AndGreaterThan1.75Member" abstract="true" name="DebtInstrumentIfTotalLeverageRatioIsEqualToOrLessThan2.25AndGreaterThan1.75Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="scor_DebtInstrumentIfTotalLeverageRatioIsEqualToOrLessThan1.75AndGreaterThan1.25Member" abstract="true" name="DebtInstrumentIfTotalLeverageRatioIsEqualToOrLessThan1.75AndGreaterThan1.25Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="scor_DebtInstrumentIfTotalLeverageRatioIsGreaterThan1.25Member" abstract="true" name="DebtInstrumentIfTotalLeverageRatioIsGreaterThan1.25Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="scor_DebtInstrumentFloorOnVariableRate" abstract="false" name="DebtInstrumentFloorOnVariableRate" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="scor_DebtInstrumentPrepaymentPremiumPercentage" abstract="false" name="DebtInstrumentPrepaymentPremiumPercentage" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="scor_DebtInstrumentTermThresholdTotalLeverageRatioMaximum" abstract="false" name="DebtInstrumentTermThresholdTotalLeverageRatioMaximum" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:pureItemType"/>
  <xs:element id="scor_DebtInstrumentTermThresholdTotalLeverageRatioMinimum" abstract="false" name="DebtInstrumentTermThresholdTotalLeverageRatioMinimum" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:pureItemType"/>
  <xs:element id="scor_DebtInstrumentTermPercentOfExcessCashFlowIfRequiredThresholdLeverageRatioIsMaintained" abstract="false" name="DebtInstrumentTermPercentOfExcessCashFlowIfRequiredThresholdLeverageRatioIsMaintained" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="scor_DebtInstrumentCovenantMinimumLiquidityThreshold" abstract="false" name="DebtInstrumentCovenantMinimumLiquidityThreshold" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="scor_DebtInstrumentCovenantRequiredPrincipalRepayment" abstract="false" name="DebtInstrumentCovenantRequiredPrincipalRepayment" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="scor_CapitalizedInternalUseSoftwareMember" abstract="true" name="CapitalizedInternalUseSoftwareMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="scor_OfficeEquipmentAndFurnitureMember" abstract="true" name="OfficeEquipmentAndFurnitureMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="scor_PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetAfterAccumulatedDepreciationAndAmortizationBenchmarkMember" abstract="true" name="PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetAfterAccumulatedDepreciationAndAmortizationBenchmarkMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="scor_LesseeOperatingLeaseOptionToExtendTerm" abstract="false" name="LesseeOperatingLeaseOptionToExtendTerm" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:durationItemType"/>
  <xs:element id="scor_LesseeOperatingLeaseOptionToTerminateTerm" abstract="false" name="LesseeOperatingLeaseOptionToTerminateTerm" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:durationItemType"/>
  <xs:element id="scor_NumberOfRealEstatePropertiesSubleased" abstract="false" name="NumberOfRealEstatePropertiesSubleased" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:integerItemType"/>
  <xs:element id="scor_NumberOfNonCancelableShortTermSubleases" abstract="false" name="NumberOfNonCancelableShortTermSubleases" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:integerItemType"/>
  <xs:element id="scor_LeaseRemainingLeaseTermShortTermSublease" abstract="false" name="LeaseRemainingLeaseTermShortTermSublease" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:durationItemType"/>
  <xs:element id="scor_NumberOfNonCancelableSubleasedProperties" abstract="false" name="NumberOfNonCancelableSubleasedProperties" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:integerItemType"/>
  <xs:element id="scor_LeaseRemainingLeaseTermSublease" abstract="false" name="LeaseRemainingLeaseTermSublease" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:durationItemType"/>
  <xs:element id="scor_NumberOfSubleasesContainingOptionsToRenewOrTerminateAgreement" abstract="false" name="NumberOfSubleasesContainingOptionsToRenewOrTerminateAgreement" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:integerItemType"/>
  <xs:element id="scor_FinanceLeaseCost1Abstract" abstract="true" name="FinanceLeaseCost1Abstract" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="scor_FinanceLeaseCost" abstract="false" name="FinanceLeaseCost" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="scor_OperatingLeaseCostAbstract" abstract="true" name="OperatingLeaseCostAbstract" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="scor_FixedLeaseCost" abstract="false" name="FixedLeaseCost" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="scor_LessorOperatingLeasePaymentToBeReceivedYearFourAndThereafter" abstract="false" name="LessorOperatingLeasePaymentToBeReceivedYearFourAndThereafter" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="scor_PanelMember" abstract="true" name="PanelMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="scor_FiniteLivedIntangibleAssetExpectedAmortizationAfterYearTwo" abstract="false" name="FiniteLivedIntangibleAssetExpectedAmortizationAfterYearTwo" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="scor_AccruedCostOfRevenuesCurrent" abstract="false" name="AccruedCostOfRevenuesCurrent" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="scor_SetTopBoxMember" abstract="true" name="SetTopBoxMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="scor_SmartTelevisionDataMember" abstract="true" name="SmartTelevisionDataMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="scor_ContractualObligationTerm" abstract="false" name="ContractualObligationTerm" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:durationItemType"/>
  <xs:element id="scor_SalesTaxAssessment" abstract="false" name="SalesTaxAssessment" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="scor_EffectiveIncomeTaxRateReconciliationStockCompensationShortfalls" abstract="false" name="EffectiveIncomeTaxRateReconciliationStockCompensationShortfalls" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:percentItemType"/>
  <xs:element id="scor_CurrentForeignStateAndLocalTaxExpenseBenefit" abstract="false" name="CurrentForeignStateAndLocalTaxExpenseBenefit" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="scor_EffectiveIncomeTaxAdjustmentRelatedToImpairmentOfGoodwill" abstract="false" name="EffectiveIncomeTaxAdjustmentRelatedToImpairmentOfGoodwill" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="scor_EffectiveIncomeTaxRateReconciliationPermanentDifferencesAmount" abstract="false" name="EffectiveIncomeTaxRateReconciliationPermanentDifferencesAmount" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="scor_OperatingLossCarryforwardsUtilizableAmount" abstract="false" name="OperatingLossCarryforwardsUtilizableAmount" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="scor_DeferredTaxAssetsCapitalLeases" abstract="false" name="DeferredTaxAssetsCapitalLeases" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="scor_DeferredTaxLiabilityRightOfUseLeaseAsset" abstract="false" name="DeferredTaxLiabilityRightOfUseLeaseAsset" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="scor_DeferredTaxLiabilitySubPartFIncomeRecapture" abstract="false" name="DeferredTaxLiabilitySubPartFIncomeRecapture" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="scor_DeferredTaxValuationAllowanceRollForward" abstract="true" name="DeferredTaxValuationAllowanceRollForward" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="scor_DeferredTaxAssetsIncreaseInValuationAllowancesAndReserves" abstract="false" name="DeferredTaxAssetsIncreaseInValuationAllowancesAndReserves" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="scor_DeferredTaxAssetsDecreaseInValuationAllowancesAndReserves" abstract="false" name="DeferredTaxAssetsDecreaseInValuationAllowancesAndReserves" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="scor_WPPplcMember" abstract="true" name="WPPplcMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="scor_CharterCommunicationsOperatingLLCMember" abstract="true" name="CharterCommunicationsOperatingLLCMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="scor_LicenseFeesInTheFirstYearMember" abstract="true" name="LicenseFeesInTheFirstYearMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="scor_LicenseFeesInTheTenthYearOfTermMember" abstract="true" name="LicenseFeesInTheTenthYearOfTermMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="scor_LicenseFeeCreditsMember" abstract="true" name="LicenseFeeCreditsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="scor_CommonStockPercentageOfSharesOutstandingOwned" abstract="false" name="CommonStockPercentageOfSharesOutstandingOwned" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="dtr-types1:percentItemType"/>
  <xs:element id="scor_TemporaryEquityPercentageOfInterestHeld" abstract="false" name="TemporaryEquityPercentageOfInterestHeld" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="dtr-types1:percentItemType"/>
  <xs:element id="scor_NumberOfDirectorsDesignatedToTheCompanysBoard" abstract="false" name="NumberOfDirectorsDesignatedToTheCompanysBoard" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:integerItemType"/>
  <xs:element id="scor_ReportableSegmentMember" abstract="true" name="ReportableSegmentMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="scor_SoftwareLicensesMaintenanceAndSystems" abstract="false" name="SoftwareLicensesMaintenanceAndSystems" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="scor_RestructuringAndTransformationCharges" abstract="false" name="RestructuringAndTransformationCharges" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
</xs:schema>
