Method and apparatus for profile score threshold setting and updating
US6535876B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jun 5, 2002 |
| Grant date | Mar 18, 2003 |
| Priority date | — |
| Expiry date | Jun 5, 2022 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S707/99936
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A novel approach for filtering documents involves the use of delivery ratio threshold setting technique to set an initial profile score threshold and the use of beta-gamma regulation for dynamic threshold updating. A group of documents is scored pursuant to a user profile. The score for each document is indicative of the relevance of the corresponding document to the user profile. The score can be compared with a profile score threshold to decide if the document should be accepted or rejected. According to one aspect of the invention, the initial threshold is set to a score threshold that approximates an expected ratio of acceptable documents calibrated with respect to a set of reference documents. According to another aspect of the invention, the score threshold can be updated based on the accumulated example documents, user's relevance judgment, and the user's utility function. The accumulated example documents are first scored against a profile and a ranked list of scored documents is obtained. Each position at the ranked list corresponds to a candidate score threshold as well as a utility value computed based on the relevance status of the example documents. From these candidat…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.