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Patent Searching and Data


Title:
DOCUMENT SEARCH DEVICE, METHOD, AND PROGRAM
Document Type and Number:
Japanese Patent JP2005227813
Kind Code:
A
Abstract:

To improve a search speed and search accuracy in search of an electronic document including a table in the text.

In search for the electronic document based on a vector space method, when a search condition described as a farmland to be sold in Yosino-cho, Yosino-gun, Nara prefecture is inputted, for example, a document such as a selection chart, which includes words such as Yosino-gun, Yosino-cho, and a farmland but includes no information about the farmland existing in the Yosino-cho in Yosino-gun, Nara prefecture, may be erroneously determined as a suitable document. In this search method, each of cells inside a table in the document is assumed as one document, and plurality of document vectors equivalent in number to the cells are generated for the document shown in the figure. A distance between the document vectors and a search vector generated for the search condition is computed, and the document corresponding to the document vector is determined as a suitable document when at least one document vector gives a distance below a threshold value to the search vector. It is effective when a value inside the cell is comparatively long.


Inventors:
TANIOKA HIROKI
Application Number:
JP2004000032879
Publication Date:
August 25, 2005
Filing Date:
February 10, 2004
Export Citation:
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Assignee:
JUST SYST CORP
International Classes:
G06F17/30; (IPC1-7): G06F17/30
Domestic Patent References:
JP2001283220A2001-10-12
JP2000339347A2000-12-08
JP2002312370A2002-10-25
Attorney, Agent or Firm:
酒井 昭徳