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Text search device, text search method

A text and text analysis technology, applied in special data processing applications, instruments, electrical digital data processing, etc., can solve problems such as increased index capacity

Inactive Publication Date: 2011-05-18
FUJIFILM BUSINESS INNOVATION CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0014] In addition, there is also a method of suppressing search noise by retrieving the reverse order of the character arrangement of index words (for example, "Tokyo", "Jingdong", etc.), but there is a problem that the overall index capacity increases

Method used

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  • Text search device, text search method
  • Text search device, text search method
  • Text search device, text search method

Examples

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Embodiment Construction

[0025] Specific embodiments of the present invention will be described with reference to the drawings.

[0026] FIG. 1 is a functional block diagram showing an example of the structure of a text retrieval device of the present invention.

[0027] As shown in the figure, the text search device 10 includes: a search target text analysis unit 11 that extracts index words (keywords) used for text search from a search target text that is a text search target; and an index generation unit that generates an index. 12; the index is stored in an unillustrated HDD (HardDisk Drive, hard disk drive) and other storage devices and maintains an index holding unit 13; a search word analysis unit 14, which is used for each search condition in the search condition as a condition when searching for text Retrieval term, carry out the cutting out of term; Retrieval condition generation part 15, it utilizes the arrangement of the word that extracts from the search term, generates the internal retri...

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Abstract

The invention provides a text retrieval device, a recording medium that recordes a text retrieval programme, and a text retrieval method. The text retrieval device performs text retrieval by using an N-gram method, and is characterised by including a retrieval object text analysis portion which extracts index words by analysing a retrieval object text according to a text analysis rule; an index generation portion which generates indexes by the index words; a retrieval word analysis portion which analyses retrieval words contained in a retrieval condition based on a retrieval word analysis rule, and extracts words from the retrieval words; a retrieval condition generation portion which generates an inner retrieval condition according to the words extracted from the retrieval words; and a retrieval processing portion which retrieves the indexes according to the inner retrieval condition.

Description

technical field [0001] The invention relates to a text retrieval device, a recording medium with a text retrieval program recorded, and a text retrieval method, and in particular to a text retrieval device for searching words or articles as keywords, a recording medium with a text retrieval program recorded, and a text retrieval method. method. Background technique [0002] As the required items for the retrieval service for retrieving the target text from multiple text articles (retrieval target text), there are retrieval performance, retrieval accuracy (noise and retrieval omission), index creation time, index capacity, etc. These items are as follows: There is a trade-off relationship between achieving a reduction in retrieval omissions and an increase in retrieval noise. [0003] For example, as one of the methods for reducing retrieval omissions, there is a retrieval method using a bi-gram index, which uses (a) a retrieval method using an index that stores the occurren...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F17/30
Inventor 石飞康浩
Owner FUJIFILM BUSINESS INNOVATION CORP