On-line recommender system
US7475027B2 · kind B2 · utility
27Cited by
11References
16Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Feb 6, 2003 |
| Grant date | Jan 6, 2009 |
| Priority date | — |
| Expiry date | Sep 18, 2026 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06Q30/0631
- WIPO fieldIT methods for management
- WIPO sectorElectrical engineering
Abstract
A method and system recommends items such as products and services to consumers. Rating on items are received from consumers as a sequential stream of data. A thin singular value decomposition is updated, one rating at the time, while receiving the ratings. A prediction of a recommendations of particular items for a particular consumer is based on the updated singular value decomposition while receiving the ratings and updating the singular value decomposition. The ratings are discarded after the updating so that a size, structure, and content of an underlying preference matrix is unknown.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.