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Mathematical formula search method and device

A technology of mathematical formulas and search methods, applied in the field of search, can solve problems such as low search efficiency

Inactive Publication Date: 2017-09-08
XIAN UNIV OF SCI & TECH
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  • Abstract
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Problems solved by technology

[0005] Embodiments of the present invention provide a mathematical formula search method and device to solve the problem of low search efficiency in the prior art

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  • Mathematical formula search method and device

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Embodiment Construction

[0032] An embodiment of the present invention provides a mathematical formula search method, including: obtaining a sequence of symbols to be searched, the sequence of symbols to be searched is a sequence of symbols converted from a mathematical formula to be searched; extracting characteristic symbols in the sequence of symbols to be searched; Comparing the similarity between the characteristic symbols and the stored plurality of characteristic symbol sets, and outputting a plurality of similarity values; wherein, the plurality of characteristic symbol sets are symbol sets composed of symbols with field characteristics, and the field includes mathematics , chemistry, physics and music; each similarity value in multiple similarity values ​​is compared with a preset threshold, and when the similarity value is greater than the preset threshold, the feature symbol set corresponding to the similarity value is marked ; Search for a formula that matches the sequence of symbols to be ...

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Abstract

The invention discloses a mathematical formula search method and device, relates to the technical field of search and solves the problem that in the prior art, the search efficiency is low. The method comprises the steps of obtaining a to-be-searched symbol sequence, wherein the to-be-searched symbol sequence is the symbol sequence formed by converting a to-be-searched mathematical formula; extracting feature symbols in the to-be-searched symbol sequence; carrying out similarity comparison on the feature symbols and a plurality of stored feature symbol sets and outputting a plurality of similarity values, wherein the plurality of feature symbol sets are the symbol sets formed by the symbols with field features, wherein the field comprises mathematics, chemistry, physics and music; comparing each similarity value in the plurality of similarity values with a preset threshold, and when the similarity value is greater than the preset threshold, marking the feature symbol set corresponding to the similarity value; and searching a formula matching the to-be-searched symbol sequence from a formula library in which the marked feature symbol set is located and returning the formula.

Description

technical field [0001] The present invention relates to the technical field of searching, and more specifically to a method and device for searching mathematical formulas. Background technique [0002] With the development of Internet applications and the explosive growth of various types of digital content (text, pictures, audio and video, etc.), how to accurately find relevant content in massive information based on user input, It is a very basic and significant technical challenge. At present, general search engines such as Google and Baidu have solved this problem to a certain extent. [0003] The mathematical search method commonly used in the prior art mainly includes receiving an input mathematical formula, converting the mathematical formula into text data, and then submitting the text data to a search engine; the search engine retrieves and returns data matching the text data. [0004] And the search engine used in the prior art is the principle of one-to-one matc...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/30
CPCG06F16/332G06F16/951
Inventor 梁飞
Owner XIAN UNIV OF SCI & TECH
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