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:
Aug. 26, 2008
Filed:
Dec. 14, 2005
Hiroki Yoshimura, Kanagawa, JP;
Hiroshi Masuichi, Kanagawa, JP;
Tomoko Ohkuma, Kanagawa, JP;
Daigo Sugihara, Kanagawa, JP;
Hiroki Yoshimura, Kanagawa, JP;
Hiroshi Masuichi, Kanagawa, JP;
Tomoko Ohkuma, Kanagawa, JP;
Daigo Sugihara, Kanagawa, JP;
Fuji Xerox Co., Ltd., Tokyo, JP;
Abstract
A question answering system includes a question answering unit, an analysis unit, a tree structure generation unit, a feature extraction unit, an evaluation unit and a re-ranking unit. The question answering unit executes search processing based on an input question and acquires answer candidates to the question. The analysis unit executes syntactic analysis processing or syntactic and semantic analysis processing on a passage obtained as a result of the search processing. The tree structure generation unit generates a tree structure based on an analysis result. The feature extraction unit extracts a relation between a search word applied in the search processing and each acquired answer candidate as a feature corresponding to each answer candidate from the tree structure. The evaluation unit determines an evaluation value of each answer candidate based on the feature extracted. The re-ranking unit re-ranks the answer candidates based on the evaluation values.