The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 12, 2012
Filed:
Sep. 04, 2009
Naoki Kamimaeda, Kanagawa, JP;
Hiroyuki Masuda, Tokyo, JP;
Naoki Kamimaeda, Kanagawa, JP;
Hiroyuki Masuda, Tokyo, JP;
Sony Corporation, Tokyo, JP;
Abstract
A base/inversion component extractor calculates an occupancy rate of each component of a vector of user preference information obtained from information stored on a user preference database, and extracts a base component from the user preference information in accordance with the calculated occupancy rate of the base component. The base/inversion component extractor extracts a similar base component from item preference information obtained from information stored on an item metadatabase. A recommendation engine calculates a similarity between a base vector of the user preference information and a base vector of the item preference information, and identifies, as candidate items, items of the predetermined number in the order of from high to low similarity. The recommendation engine further calculates a similarity between an inversion vector of the user preference information and an inversion vector of the item preference information, and identifies an item candidate having a low similarity.