主权项 |
1. A method comprising:
identifying a user identifier associated with an advertising impression of an advertising campaign; receiving, at an advertising server, user demographics for the user identifier, the user demographics received from a plurality of user data sources, each user data source maintaining a different set of data relating to the user identifier, wherein the user demographics are not shared between user data sources; determining, at the advertising server, aggregated user demographics for the user identifier based on the received user demographics; updating a viewing statistics set associated with the advertising campaign with the aggregated user demographics; and computing, at the advertising server, estimated viewing statistics for the advertising campaign by applying an estimation model to the viewing statistics set. |