Patent ID: 11914601
Assignee: NTT DOCOMO, INC.
Field: Computer technology (Electrical engineering)
Classification: CPC G | IPC G

Claim 14:
15. A method, implemented by circuitry of a re-ranking device, the method comprising:
receiving, by an input unit, a search query from one user;
storing plurality of re-ranking models prepared in accordance with common information of a plurality of users;
searching, by a search unit, a search on the basis of the search query and obtain a search result;
selecting, by a re-ranking processing unit, one re-ranking model on the basis of common information of the one user, and performing a re-ranking process on the search result using the one re-ranking model;
wherein the method further includes
storing a log database containing a search query, a search result list by the search query, and a click log selected by a user;
classifying, by a clustering unit, the log information on the basis of common information of a plurality of users; and
generating, by a re-ranking model generation unit, the plurality of re-ranking models on the basis of the log information classified on the basis of the common information, wherein
selecting, by the re-ranking processing unit, one re-ranking model from the plurality of re-ranking models generated by the re-ranking model generation unit, and performs the re-ranking process.