Invention Grant
US07966307B2 Document search method and document search apparatus that use a combination of index-type search and scan-type search
有权
使用索引型搜索和扫描型搜索的组合的文档搜索方法和文档搜索装置
- Patent Title: Document search method and document search apparatus that use a combination of index-type search and scan-type search
- Patent Title (中): 使用索引型搜索和扫描型搜索的组合的文档搜索方法和文档搜索装置
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Application No.: US12133811Application Date: 2008-06-05
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Publication No.: US07966307B2Publication Date: 2011-06-21
- Inventor: Makoto Iwayama , Kazutomo Ushijima , Osamu Imaichi , Tomohiro Yasuda
- Applicant: Makoto Iwayama , Kazutomo Ushijima , Osamu Imaichi , Tomohiro Yasuda
- Applicant Address: JP Tokyo
- Assignee: Hitachi, Ltd.
- Current Assignee: Hitachi, Ltd.
- Current Assignee Address: JP Tokyo
- Agency: Brundidge & Stanger, P.C.
- Priority: JP2007-151860 20070607
- Main IPC: G06F7/00
- IPC: G06F7/00 ; G06F17/00

Abstract:
A document search apparatus capable of an index-type search and a scan-type search performs a search in a combination of the two search types while compensating for the disadvantages of the two search types with each other. A search query for index-type search and a search query for scan-type search are constructed based on a search query consisting of a logical formula of keywords. Then, a character 2-gram for performing an index search is set to shorten the whole search time, and the index-type search is performed. Finally, a scan-type search is performed on this search result of the index-type search.
Public/Granted literature
- US20080306919A1 DOCUMENT SEARCH METHOD Public/Granted day:2008-12-11
Information query