IDENTIFYING ONLINE SYSTEM USERS INCLUDED IN A GROUP GENERATED BY A THIRD PARTY SYSTEM WITHOUT THE THIRD PARTY SYSTEM IDENTIFYING INDIVIDUAL USERS OF THE GROUP TO THE ONLINE SYSTEM

摘要

A third party system generates a group of users and a function that identifies users in the group as well as additional users not in the group when applied to user identifying information. The third party system transmits the function to an online system, which applies the function to user identifying information associated with various users of the online system. Applying the function to the user identifying information generates a set of users including users in the group and one or more additional users who are not in the group. The online system transmits information associated with users in the set and information identifying users in the set to the third party system, which determines obtained information associated with users of the group. In some embodiments, the information identifying users in the set is obfuscated user identifying information associated with the users in the set by the online system.