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Entropy weight computing method and multi-target decision method

A technology of calculation method and target, applied in the field of entropy weight method, which can solve problems such as unreasonable distribution of entropy weight.

Inactive Publication Date: 2016-12-21
ELECTRIC POWER RES INST OF GUANGDONG POWER GRID
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Problems solved by technology

[0013] The purpose of the present invention is to provide an entropy weight calculation method and device to solve the problem in the existing entropy weight method that when the entropy values ​​of all evaluation indicators approach 1, the slight difference in entropy value will cause the corresponding entropy weight to become times change, which leads to the problem of unreasonable distribution of entropy weights; in addition, the present invention also provides a multi-objective decision-making method and device

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Embodiment Construction

[0088] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0089] see figure 1 , which shows an entropy weight calculation method provided by an embodiment of the present invention, which may include the following steps:

[0090] S11: Obtain the evaluation index of the evaluated object and the entropy value of each evaluation index.

[0091] It should be noted that the evaluated object, evaluation index, and entropy value of the evaluation index obtained in this step can be the same as the corresponding content invol...

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Abstract

The invention discloses an entropy weight calculation method and device. The method includes: obtaining the evaluation index of the evaluated object and the entropy value of each evaluation index; calculating the entropy weight of each evaluation index according to the following formula: &omega; ej = ( 1 - H ‾ ) &omega; ej 1 + H ‾ &omega; ej 2 H j < 1 0 H j = 1 ω ej 1 = 1 - H j Σ j = 1 , H j ≠ 1 m ( 1 - H j ) , ω ej 2 = 1 / H j Σ j = 1 , H j ≠ 1 m ( 1 / H j ) Among them, ω ej Indicates the entropy weight of the evaluation index j, H j Indicates the entropy value of the evaluation index j, Indicates the mean value of all entropy values ​​that are not 1, m indicates the number of evaluation indicators, j=1,2,...,m. As a result, the entropy value can be reasonably weighted when the entropy value is too large or too small, which solves the existing entropy weight method in the prior art. When the entropy values ​​of all evaluation indicators approach 1, the small difference in entropy value will cause the corresponding entropy The weight changes exponentially, which leads to the problem of unreasonable distribution of entropy weight. In addition, the embodiment of the present invention also provides a multi-objective decision-making method and device based on the above technical solution, which is simple and efficient, and is very suitable for online operation.

Description

technical field [0001] The present invention relates to the technical field of entropy weight method, and more specifically, relates to an entropy weight calculation method and a multi-objective decision-making method. Background technique [0002] Entropy itself is a thermodynamic concept, which was later introduced into information theory by C.E. Shannon, endowing entropy with a broad concept. According to the idea of ​​entropy, the quantity and quality of information that people obtain in decision-making is one of the important factors that determine the accuracy and reliability of decision-making. The entropy weight method is an objective weighting method formed by using the characteristic that entropy can measure the amount of useful information provided by data. In the case of a given set of evaluation objects and the values ​​of various evaluation indicators are determined, from the perspective of information, the weight given to an indicator by using the entropy wei...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/15G06F17/16
CPCG06F17/15G06F17/16
Inventor 黄缙华顾博川陈炯聪唐升卫温柏坚吴青华向德军黄曙李书杰荆朝霞刘菲尤毅李世明郑杰辉夏亚君江昌旭
Owner ELECTRIC POWER RES INST OF GUANGDONG POWER GRID
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