发明名称 |
Privacy-preserving collaborative filtering |
摘要 |
A recommender system can generate a predicted item rating for one user by performing collaborative filtering on item ratings from other users. The recommender system can include a client device (204) that interfaces with a server (202) to obtain a predicted item rating for a local user. The client device can generate a standardized ratings vector for the user, and computes a group identifier for the user based on the standardized ratings vector. The system also generates a noisy ratings vector for the local user, and sends a user-ratings snapshot to a recommendation server that includes the group identifier and the noisy ratings vector. The recommender system can also include the recommendation server that generates a predicted item rating for the user by performing collaborative filtering on ratings vectors from a plurality of other users that belong to the same ratings group. |
申请公布号 |
EP2602755(A1) |
申请公布日期 |
2013.06.12 |
申请号 |
EP20120195381 |
申请日期 |
2012.12.04 |
申请人 |
PALO ALTO RESEARCH CENTER INCORPORATED |
发明人 |
PATHAK, MANAS;CHOW, RICHARD;SHI, RUNTING;WANG, CONG |
分类号 |
G06Q30/02 |
主分类号 |
G06Q30/02 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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