Privacy preserving user group expansion
摘要
說(shuō)明書
Adding the user of the client device 110 to the user interest group can include assigning the user interest group identifier to the client device 110. The user grouping engine 114 can analyze the list of resources visited by the user on a recurring basis, e.g., periodically, to assign the user to a user interest group. Thus, the user interest group to which a user is assigned can change over time. However, the history of user interest groups for a user may not be maintained. Instead, the application 112 may only maintain the user interest group identifier for the current user interest group to which the user is assigned. This preserves the user's privacy with respect to user group membership over time. When requesting a digital component from the content platform 150, the application 112 can provide, with the request, the user interest group identifier rather than a user identifier that identifies the actual user of the client device 110. As a result, the client device 110 may not be identifiable by private or personal information of the user of the client device 110, thereby preserving user privacy. These user interest groups can be used in generation and expansion of user lists for other user groups (e.g., original user list 132) for delivery of digital components, as described further below.
