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Information Retrieval Method Based on Dynamic Attribute Analysis

A technology of information retrieval and attribute analysis, applied in structured data retrieval, special data processing applications, instruments, etc., can solve problems such as the inability to establish information retrieval rules, and achieve the effect of accurate information retrieval

Inactive Publication Date: 2017-02-15
UNIV OF ELECTRONICS SCI & TECH OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this method is difficult to ensure that each retrieval is optimal. In some cases, the importance of the global situation is inconsistent with the local analysis of the premise of obtaining part of the knowledge, and it is impossible to establish optimal information retrieval rules faster. to get search results

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  • Information Retrieval Method Based on Dynamic Attribute Analysis
  • Information Retrieval Method Based on Dynamic Attribute Analysis
  • Information Retrieval Method Based on Dynamic Attribute Analysis

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Embodiment Construction

[0016] The information table retrieved in this embodiment adopts a decision information table format, which can integrate data of the most commonly used relational database type at present. The information system S can be considered as a S=(U,A), where U is a non-empty, finite set of individuals, which can be regarded as the domain of discourse considered by the problem. And A is a collection of attributes, then for Then there is a:U→V a , where V a is the value range of attribute a. A decision table is an information knowledge expression system S=, where R=C∪D is a set of attributes, and V is a set of all attribute values, f:U×R→V is an information function , which assigns the corresponding attribute value to any element on the space of discourse. For attribute R, it is divided into condition attribute C and result attribute D. The information data to be retrieved is combined according to different attributes and decisions. Each row of data represents a sample data to b...

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Abstract

The invention provides an information retrieval method based on dynamic property analysis. According to the information retrieval method, the dynamic property importance degree of information retrieval conditions each time is analyzed, the dynamic information entropy increment direction during retrieval is analyzed based on an information retrieval algorithm of dynamic property analysis, calculation on the dynamic property importance degree of information to be retrieved is achieved to form an information retrieval rule, and information retrieval can be rapidly carried out in the maximum dynamic information entropy increment direction. According to the information retrieval method, the rapid and accurate information retrieval rule can be built, rapid information retrieval will be carried out through the rule according to the dynamically-updated optimal information retrieval direction, and therefore rapid, convenient and accurate information retrieval is obtained.

Description

Background technique [0001] At present, the main contradiction in information demand is not the limitation of the amount of information, but how to accurately and conveniently locate the required information, that is, how to establish information retrieval rules according to the search conditions. The current way of information retrieval is based on the static attribute analysis results of the retrieved information. The theoretical basis of this method is Rough Set. Rough Set establishes a definition method that combines the upper approximation set and the lower approximation set to divide the data that is difficult to confirm the attribution. The upper approximation set and the lower approximation set can write clear formulas through the equivalence relationship, so that the uncertain characteristics of the boundary data can be calculated, so as to facilitate the verification of the system's understanding of things. [0002] Interpreting the importance of attributes in the ...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F17/30
CPCG06F16/2468G06F16/284
Inventor 赫熙煦张民贾海涛陈雷霆
Owner UNIV OF ELECTRONICS SCI & TECH OF CHINA