Similarity measurement method for evaluating languages based on mathematical expression

A technique of mathematical expression and similarity measurement, applied in the field of information retrieval, to achieve credible and flexible decision-making effects, improve effectiveness, and enhance accuracy

Active Publication Date: 2021-06-29
HEBEI UNIVERSITY
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  • Abstract
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  • Claims
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Problems solved by technology

[0010] The two methods in the previous paragraph can effectively realize the retrieval of mathematical expressions, however, based on the comple

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  • Similarity measurement method for evaluating languages based on mathematical expression
  • Similarity measurement method for evaluating languages based on mathematical expression
  • Similarity measurement method for evaluating languages based on mathematical expression

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Embodiment Construction

[0047] The invention was completed by the Natural Science Foundation of Hebei Province (project approval number: F2019201329). Facing a large amount of information contained in mathematical expressions, it is very necessary for researchers to find satisfactory mathematical expressions. However, only based on the characteristics of the mathematical expression itself, it is often impossible to extract and describe the features in a comprehensive and detailed manner, resulting in many similar mathematical expressions in the mathematical expression retrieval process. How to distinguish the similarity of the expressions is the research of the present invention. important content.

[0048] In order to realize the retrieval system for the purpose of querying and sorting with mathematical expressions, the present invention at first does the following explanations:

[0049] 1. The present invention is mainly for querying and sorting results.

[0050] In the process of searching with ...

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Abstract

The invention provides a similarity measurement method for evaluating languages based on a mathematical expression. According to the method, an interval value hesitant fuzzy language attribute set based on the mathematical expression is constructed, the preference degree relation among the attributes is found, the weight possibility probability value of each attribute is determined, the similarity between the result expression and the query expression is calculated, and finally the required mathematical expression retrieval result is displayed to a user. According to the method, starting from elements forming the mathematical expression, the interval value hesitant fuzzy language set specially used for expression query is formed by utilizing operators, operands and query keywords, so that the uncertainty and fuzziness in the formula can be expressed to the maximum extent; the problem of one-sidedness decision caused by the fact that a single determined value represents a certain object is avoided, the method is closer to the expression and description mode of people for objects, and the decision effect is more credible and flexible. The invention is subsidized by natural science fund of Hebei Province (project approval number: F2019201329).

Description

technical field [0001] The invention relates to the technical field of information retrieval, in particular to a similarity measurement method for evaluating language based on mathematical expressions. Background technique [0002] At present, with the rapid development of information retrieval technology, people's information retrieval methods are also diversified. How to efficiently obtain information that is closer to people's needs has become an important content of information retrieval. Different from general information retrieval, the object of mathematical expression retrieval not only involves many mathematical symbols, but also includes the characteristics of the spatial position relationship and operation meaning of each symbol node in the mathematical expression. There are multiple formats for describing mathematical expressions, such as pictures, LaTeX, MathML, and OpenMath. Existing related methods are generally limited to dealing with the relevant content of m...

Claims

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Application Information

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IPC IPC(8): G06F16/33G06F16/338G06F16/332
CPCG06F16/334G06F16/338G06F16/332
Inventor 田学东韩苹
Owner HEBEI UNIVERSITY
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