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  <xs:element id="nrds_ShareBasedPaymentArrangementByShareBasedPaymentAwardAnnualIncreaseInSharesAuthorizedPercentage" abstract="false" name="ShareBasedPaymentArrangementByShareBasedPaymentAwardAnnualIncreaseInSharesAuthorizedPercentage" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="dtr-types1:percentItemType"/>
  <xs:element id="nrds_CommonStockCapitalSharesReservedForFutureIssuanceIncrease" abstract="false" name="CommonStockCapitalSharesReservedForFutureIssuanceIncrease" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:sharesItemType"/>
  <xs:element id="nrds_StockOptionsWithBothServiceBasedAndPerformanceBasedConditionsMember" abstract="true" name="StockOptionsWithBothServiceBasedAndPerformanceBasedConditionsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="nrds_RestrictedStockUnitsServiceBasedAndPerformanceBasedMember" abstract="true" name="RestrictedStockUnitsServiceBasedAndPerformanceBasedMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="nrds_NumeratorAbstract" abstract="true" name="NumeratorAbstract" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="nrds_DenominatorAbstract" abstract="true" name="DenominatorAbstract" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="nrds_ShareBasedPaymentArrangementOptionsAndRestrictedStockUnitsMember" abstract="true" name="ShareBasedPaymentArrangementOptionsAndRestrictedStockUnitsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
</xs:schema>
