Index system generation method based on entropy weight method
A technology of index system and entropy weight method, which is applied in the field of engineering to achieve the effect of avoiding risks, reducing risks and promoting continuous improvement
Active Publication Date: 2021-08-13
QINGDAO UNIV OF SCI & TECH
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Through reviewing the literature, it was not found that the entropy weight method was applied to the generation of the safety index system. At the same time, the generation and analysis of the safety index system came from the accident report. Solve to obtain index system
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[0034] See attached Figure 1-2 , an index system generation method based on the entropy weight method, assuming that there are n accident case sample sets R, and each sample has m non-repetitive indexes, the index system generation method includes the following steps:
[0035] Step 1: Based on the processing and analysis of chemical accident case samples, the average amount of information contained in the samples is obtained, that is, the information entropy Ei of the samples is obtained;
[0036] Step 2: Based on the occurrence time T(ti) of the accident case sample and the degree of damage w i and the influence of feature information such as information entropy on the accident, and calculate the weight W of the sample i ;
[0037] Step 3: According to the sample weight W i and the information content of the sample index, and obtain the proportion p of each index of the sample j ;
[0038] Step 4: Based on the original index weight and time parameters, use the idea of ...
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The invention relates to an index system generation method based on an entropy weight method. The method is based on the safety management index system of a chemical enterprise, and studies how to reasonably improve and update the original index system to construct a new index system. The basis for the improvement is to use the historical chemical accident cases as the analysis data, and analyze the irrationality of the index weight according to the reverse analysis of the data. In this patent, the entropy weight method is not an algorithm for assigning a large number of sample data, but the entropy weight method is used to evaluate the sample quality , to form the sample weight, reversely analyze and calculate the weight of the safety index system on the basis of this data, and adjust and update the weight of the index appropriately. The present invention makes reasonable and necessary modifications according to actual conditions, thereby promoting continuous improvement of enterprise safety supervision and safety evaluation, and better avoiding risks.
Description
technical field [0001] The invention belongs to the technical field of engineering and relates to an index system generation method based on an entropy weight method. Background technique [0002] With the vigorous development of the chemical industry, the frequency of chemical accidents in chemical enterprises is also increasing, and chemical accidents have caused huge losses to the economic and social environment. Evaluating and measuring the safety management level of chemical enterprises is one of the ways to avoid risks from the root. The safety management level evaluation index system of chemical enterprises is an effective method to evaluate the uncertainty of chemical environmental risks, so as to avoid and reduce environmental risks from the source. At present, various safety management level index evaluation systems have been formulated based on the integration of expert experience and practical application experience at home and abroad. However, due to the diffe...
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IPC IPC(8): G06Q10/06
CPCG06Q10/0635G06Q10/06393
Inventor 杜军威于洋洋胡强李浩杰马超
Owner QINGDAO UNIV OF SCI & TECH