The present teaching relates to method, system, and medium for obtaining consumption data. A first request is received to retrieve a plurality of data sets, each of which is related to one of a plurality of accounts in an audience cluster, each account is represented by a persistent identifier that links multiple identifiers associated with one or more devices, or platforms on which content is consumed in at least one media type. Information related to content consumption on a device/platform associated with each of the linked multiple identifiers of the account is retrieved, and a data set of the account is provided based on information retrieved with respect to each of the linked multiple identifiers. The data set is presented in one representation upon a request for information about the account and retrieved data sets are provided in response to the first request, for forecasting performance of audience clusters.
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