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:
Apr. 12, 2011
Filed:
Feb. 27, 2008
Chenxi Lin, Beijing, CN;
Lei Ji, Beijing, CN;
Huajun Zeng, Beijing, CN;
Benyu Zhang, Beijing, CN;
Zheng Chen, Beijing, CN;
Jian Wang, Beijing, CN;
Chenxi Lin, Beijing, CN;
Lei Ji, Beijing, CN;
HuaJun Zeng, Beijing, CN;
Benyu Zhang, Beijing, CN;
Zheng Chen, Beijing, CN;
Jian Wang, Beijing, CN;
Microsoft Corporation, Redmond, WA (US);
Abstract
A method and system for use in information retrieval includes, for each of a plurality of terms, selecting a predetermined number of top scoring documents for the term to form a corresponding document set for the term. When a plurality of terms are received, optionally as a query, the system ranks, using an inverse document frequency algorithm, the plurality of terms for importance based on the document sets for the plurality of terms. Then a number of ranked terms are selected based on importance and a union set is formed based on the document sets associated with the selected number of ranked terms.