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Mathematical formula index creation method and system for retrieval system

A mathematical formula and retrieval system technology, applied in the field of information retrieval, can solve problems such as the inability to guarantee the accuracy of the results, and achieve the effect of simple implementation and efficient execution

Active Publication Date: 2020-02-14
BEIJING FORESTRY UNIVERSITY
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  • Claims
  • Application Information

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Problems solved by technology

Since this type of method is an approximate retrieval based on similarity, it cannot guarantee the accuracy of the results

Method used

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  • Mathematical formula index creation method and system for retrieval system
  • Mathematical formula index creation method and system for retrieval system
  • Mathematical formula index creation method and system for retrieval system

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Embodiment Construction

[0032] The technical solution of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0033] see Figure 8 , the general information retrieval system includes two relatively independent subsystems: one is the index creation system that collects and processes the retrieved text to obtain the retrieval, which includes main modules such as text acquisition, text conversion, and index creation;

[0034] see Figure 9 , and the other is a query system in which users input retrieval information and obtain relevant file data through user interaction, search and sorting. This system also includes evaluation of retrieval results based on user log information.

[0035] The present invention is based on this type of computer information retrieval system and aims at the retrieval of mathematical texts with Latex formulas. The technical problem solved by the present invention is: after the Latex mathematical formula is obtained in the t...

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Abstract

The invention provides a mathematical formula index creation method and system for a retrieval system. Through the steps of formula analysis, formula tree node combination, formula tree node rearrangement, leaf node symbol replacement, formula tree character string index creation and the like, the mathematical formula index creation method can realize rapid index creation of the Latex mathematicalformula, can solve the problem that index creation is not unique due to formula writing habit differences and basic operation rule use, and can provide accurate and effective inverted indexes for accurate retrieval of the mathematical formula. The mathematical formula index creation method has important application value in the aspects of mathematical knowledge retrieval, automatic reasoning andthe like in a computer retrieval system, and can improve the retrieval efficiency of the retrieval system.

Description

technical field [0001] The present invention relates to related technical fields such as information retrieval, mathematical formula analysis and processing, and in particular to a mathematical formula analysis, standardization, index creation and retrieval method and system. Background technique [0002] With the development of the Internet and the increasing abundance of network information resources, search engines play an increasingly important role in obtaining network information resources. Search engines establish index directories of keywords and target texts through methods such as webpage information crawling, text processing, and index creation. In this way, people can quickly and accurately obtain the required relevant information text resources through keyword retrieval. [0003] However, in addition to a large number of various texts described by natural language, there are also many professional structured text information on the Internet, such as mathematica...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F16/31G06F16/332
CPCG06F16/319G06F16/322G06F16/332Y02D10/00
Inventor 蒋东辰付双许博刘俊杰欧琳琳
Owner BEIJING FORESTRY UNIVERSITY