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

Document search method and document search apparatus that use a combination of index-type search and scan-type search
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.
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