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Grey rough set-based power grid construction project post-evaluation index weight assignment method

A construction project, rough set technology, applied in the field of power grid construction evaluation, can solve the problem of no unified measurement standard

Inactive Publication Date: 2014-04-02
STATE GRID CORP OF CHINA +1
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Problems solved by technology

[0011] Its disadvantage is that in the comprehensive evaluation, there is generally no unified measurement standard among the various characteristic indicators of the evaluated object, and in many cases, the obtained characteristic indicators are qualitative descriptions rather than quantitative values.

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  • Grey rough set-based power grid construction project post-evaluation index weight assignment method
  • Grey rough set-based power grid construction project post-evaluation index weight assignment method
  • Grey rough set-based power grid construction project post-evaluation index weight assignment method

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Embodiment Construction

[0040] The gray rough set-based post-evaluation index weighting method of the power grid construction project provided by the present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0041] Such as figure 1 As shown, the post-evaluation index weighting method for power grid construction projects based on gray rough sets provided by the present invention includes the following steps executed in sequence:

[0042] Step 1. Stage S01 of constructing the index system: firstly, establish a post-evaluation index system for power grid construction projects with a hierarchical structure;

[0043] According to the content of the post-evaluation, starting from the four aspects of implementing management evaluation, financial evaluation, technical evaluation, and social impact evaluation, four first-level indicators are established and given different evaluation weights; Next, several secondary indicators and their eval...

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Abstract

The invention discloses a grey rough set-based power grid construction project post-evaluation index weight assignment method, which comprises the following steps of constructing an index system, namely establishing a power grid construction project post-evaluation index system with a hierarchical structure; solving the importance of each index, namely solving the importance of each index by adopting a grey rough set related principle; gradually constructing a sample space based on the post-evaluation index system by using a marking result of each expert as original sample data; calculating a rough set of each index by utilizing a weight value of each expert and a grey rough set method; assigning weights by using a normalization processing method; performing normalization calculation on the rough set, calculated by the grey rough set method, of the index of each level to obtain an objective weight value of each index. According to the grey rough set-based power grid construction project post-evaluation index weight assignment method, the weight of the power grid construction project post-evaluation index of each level is obtained, technical support is provided for the development of power grid construction project post-evaluation work in the future, and the post-evaluation index system is normalized.

Description

technical field [0001] The invention belongs to the technical field of power grid construction evaluation, and in particular relates to a post-evaluation index weighting method for power grid construction projects based on gray rough sets. Background technique [0002] At present, the objective weighting methods for determining the weight of indicators mainly include: principal component analysis method, entropy value method, and BP neural network method. [0003] (1) Principal Component Analysis [0004] The principal component weighting analysis method is to use the idea of ​​dimensionality reduction to try to recombine many original indicators with certain correlations into a new set of independent comprehensive indicators to replace the original indicators. It is a multivariate statistical analysis method that selects a few comprehensive indicators (that is, principal components) that can reflect the original indicator information as much as possible for analysis. [0...

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Application Information

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IPC IPC(8): G06Q50/06
CPCY04S10/54Y04S10/50
Inventor 王磊刘树勇穆健宗志刚任大任
Owner STATE GRID CORP OF CHINA
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