Weight distribution optimization method of public security video monitoring evaluation system

Abstract

The invention discloses a weight distribution optimization method of a public security video monitoring evaluation system. The method comprises the following steps of: firstly, checking the reasonability of an expected score of an evaluation result, judging whether the expected score can be reached through weight optimization of the evaluation system or not, and if the expected score meets a reasonability requirement, setting an error permission interval related to the evaluation result; that is, a permission interval of an actual score is set based on an expected score of an evaluation result, then a cross entropy cost function about the evaluation result is constructed, an index weight is adjusted according to a gradient descent method, the evaluation result is recalculated after the weight is normalized, and if the actual score is not in an error permission interval, the index weight is adjusted again according to the gradient descent method, and the cross entropy function is used as a cost function, so that the weight distribution adjustment amplitude is in direct proportion to the error of the evaluation result, the weight adjustment speed is increased, the weight distributionoptimization process is formulated, and the programmed and automatic adjustment of the weight can be realized.

Description

technical field [0001] The invention relates to the technical field of evaluation index system construction, in particular to a weight distribution optimization method of a public security video surveillance evaluation system. Background technique [0002] In the process of construction and use of urban public security video surveillance system, in order to test the effectiveness of system construction and improve the level of system management, it is necessary to construct an evaluation index system for system effectiveness. Since the effectiveness of the video surveillance system involves multiple aspects such as hardware, software, and management, it is necessary to design a multi-level and multi-dimensional evaluation index system. Reasonably assigning the weight of each indicator is the key to ensure the scientific nature of the evaluation system. When evaluating the public security video surveillance system from the height of the city level, there are relatively few d...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a method for optimizing the weight distribution of the public security video surveillance evaluation system, which can solve the problem of tedious adjustment of the weight distribution of the urban public security video surveillance system evaluation system

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