发明授权
- 专利标题: System and method for improving the ranking of information retrieval results for short queries
- 专利标题(中): 用于提高短查询信息检索结果排名的系统和方法
-
申请号: US719816申请日: 1996-09-30
-
公开(公告)号: US5870740A公开(公告)日: 1999-02-09
- 发明人: Daniel E. Rose , Douglass R. Cutting
- 申请人: Daniel E. Rose , Douglass R. Cutting
- 申请人地址: CA Cupertino
- 专利权人: Apple Computer, Inc.
- 当前专利权人: Apple Computer, Inc.
- 当前专利权人地址: CA Cupertino
- 主分类号: G06F17/30
- IPC分类号: G06F17/30
摘要:
A method and system for retrieving information in response to a query by a user. The method includes the steps of receiving a signal s having a value corresponding to a relevance-ranking algorithm score of a retrieved document, receiving a signal q having a value corresponding to the number of words in the query and a signal v having a value corresponding to the coordination level of the retrieved document and query (i.e., the degree of overlap between the document terms and the query terms), and generating an adjusted score s1 dependent on the signal s, the signal q and the signal v. The adjusted score s1 takes the coordination level into account for small values of q and gradually decreases the importance of the coordination level as q increases. The system of this invention includes a computer-based system for carrying out the method of this invention.
公开/授权文献
- USD293570S Reel for a video tape cassette 公开/授权日:1988-01-05