| 主权项 |
1. A method for identifying on-line users for advertisement or content targeting, the method comprising:
from a data management system that includes a plurality of distributed processors, obtaining historical user data in association with a plurality of user identifiers, which have been unambiguously determined, wherein the historical user data includes event data for one or more on-line user events that have occurred for each user identifier, wherein the historical user data also specify a plurality of fingerprint vectors of characteristic values that are each associated with specific ones of the user identifiers; by a user detector system that is configured to facilitate on-line advertisement or content targeting, receiving a current one of the fingerprint vectors that is ambiguously associated with two or more user identifiers; by the user detector system, selecting a first user identifier from the associated two or more user identifiers of the current fingerprint vector based on the event data of the historical user data; and providing the selected first user identifier to a server configured to provide advertisement or content based on user profile data that is obtainable for such selected first user identifier. |
