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Search method and search device

A search method and data search technology, applied in structured data retrieval, text database indexing, digital data information retrieval, etc., can solve problems such as hindering high-speed processing

Active Publication Date: 2020-07-07
FUJITSU LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] When some words or characters appearing at high frequency are converted into one-byte code or two-byte code as described above, for example, it is impossible to convert the one-byte code, two-byte code included therein without processing. Text data of byte codes and triple-byte codes are compared with text data in which the search character string is encoded into triple-byte codes, preventing high-speed processing

Method used

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  • Search method and search device
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  • Search method and search device

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Embodiment Construction

[0018] The preferred embodiments of the present invention will be explained with reference to the drawings.

[0019] figure 1 An example of the processing performed by the search device according to the present embodiment is shown. For example, in text data processed by a search device, some characters and words appearing with high frequency are converted into two-byte codes instead of three-byte codes. Therefore, in the text data, three-byte codes and two-byte codes are mixed.

[0020] Therefore, for example, when the code of each search word included in the character string of the search target is a three-byte code and the code of each word targeted is two bytes, in the conventional technology, the respective codes cannot be directly compared. And the comparison processing cannot be executed at high speed. In order to solve this problem, the search device according to the present embodiment performs the following processing. In the following description, a code corresponding t...

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Abstract

The invention discloses a search method and a search device. A search device (100) converts search data into encoded search data having a first encoding format according to a first encoding rule. The search device (100) searches for coded search data in target coded data that has been coded into a first coded format or coded into a second coded format by a first coded rule. When the specific coded data in the format is selected, the search device (100) compares the coded search data with converted coded data which is the specific coded data converted into the first coded format based on a predetermined conversion rule.

Description

Technical field [0001] The embodiments discussed herein relate to search methods and the like. Background technique [0002] Traditionally, when searching for a character string in text data, the text data is compared with the character string to determine whether the text data includes a character string matching the character string. When the text data is compressed data, for example, the text data and the character string do not correspond to each other, and therefore, the character string is compared after the compressed data is decompressed. [0003] There are also cases where text data and character strings are encoded by an encoding scheme to increase the compression rate. When text data and character strings are encoded based on the same encoding scheme, the text data and character strings can be directly compared without decoding (Japanese Laid-open Patent Publication Nos. 7-287716 and 11-143877). [0004] However, in the above-mentioned conventional technology, although t...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F16/245G06F16/25G06F16/31
CPCG06F16/334G06F16/90344G06F40/126G06F16/31G06F16/258G06F16/245
Inventor 片冈正弘山田树一上田晴康
Owner FUJITSU LTD