Storage device, hazardous chemical accident case retrieval method, device and equipment

By setting the accident cause section as standard target text in the hazardous chemical accident case library, and combining the TextRank model and multiple influencing factors, the characteristic keywords of hazardous chemical accident cases are extracted, and the problems of low extraction efficiency and insufficient accuracy in the existing technology are solved, and more efficient and accurate feature keyword extraction is achieved.

CN114510550BActive Publication Date: 2025-03-25CHINA PETROLEUM & CHEMICAL CORP +1
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Patent Information

Application Number
CN202011278061.6
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2020-11-16
Publication Date
2025-03-25
Estimated Expiration
2040-11-16

AI Technical Summary

Technical Problem

In the prior art, the extraction efficiency of the characteristic keywords of hazardous chemical accident cases is low and the accuracy is too low, so it cannot effectively meet the requirements of hazardous chemical accident cases.

Method used

When building a hazardous chemical accident case library, the content of the accident cause section is set as the standard target text, and through unsupervised learning, especially based on the TextRank model, the weight of candidate keywords is calculated and characteristic keywords are extracted through unsupervised learning, especially based on the TextRank model.

Benefits of technology

It improves the extraction efficiency and accuracy of keywords for hazardous chemical accident cases, reduces the introduction of irrelevant candidate keywords, enhances the expression of accident characteristics, and meets the needs of hazardous chemical accident cases.

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Abstract

The present invention discloses a storage device, a method, a device and an equipment for retrieving dangerous chemical accident cases, wherein the method comprises the following steps: when constructing a dangerous chemical accident case library, setting the text file of the dangerous chemical accident case to at least include a plurality of content sections including the cause of the accident; the description of the cause of the accident includes a description of the accident type, a description of the disaster-causing elements and a description of the affected object; performing word segmentation processing on the initial target text and converting it into a standard target text; converting to the standard target text includes replacing the English name of the chemical and / or the reorganization and identification of the equipment name; and effectively extracting the characteristic keywords of the standard target text by introducing targeted influencing factors and comprehensively calculating the weights of the candidate keywords. The present invention reduces the text length of the target text used to extract the characteristic keywords, thereby reducing the dimension of the candidate keywords and the introduction of irrelevant candidate keywords, thereby improving the calculation efficiency and accuracy of the characteristic keyword extraction of the dangerous chemical accident case.
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