Study on the multi-factor degree set pair analysis fuzzy evaluation model based on entropy weight

Abstract

The set pair analysis is a system analysis method to deal with uncertain problem. The concepts of the main same, supper same, assimilation degree and the new determining levels law are stipulated to make up for the defects of routine set pair analysis about the weights and determining levels law based on the theories of improved entropy weight and set pair analysis malleability. The method to determine system level and rank order projects by the main same and assimilation degree was put forward, and then, the multi-factors degree set pair analysis fuzzy evaluation model (EWMFSPAFM) has been suggested. A study under taken groundwater environment evaluation as demonstration, the water resources are evaluated by the EWMFSPAFM. And the results are compared with the results of the routine set pair analysis evaluation model and improved set pair analysis evaluation model. It is showed that the EWMFSPAFM is structure simple, calculation easy, result practical and reasonable, the method feasible and reliable.

Evaluation Method of Water Quality Based on Set Pair Analysis with Varying Coefficient of Discrepancy Degree

“…X8 4.5295 Ⅳ-Ⅴ Ⅳ For comparison, the assessment results from the grey correlation method [7] are also shown in this Table Ⅳ. Table Ⅳ indicates that the results from the grey correlation method are completely similar to SPA-VCDD model.…”

“…(Ordinary), grade Ⅳ (Poor) and grade Ⅴ (bad).The grade standard is shown in Table Ⅱaccording to the "Underwater environmental quality standard" (GB/T14848-93) [7]. The water quality analysis results of water samples are shown in Table Ⅲ.…”

Link Security Situation Identification Method Based on the Ad Hoc Network of Medical Units

“…Set pair analysis is an algorithm dealing with the quantitative similarity and difference of uncertain systems [3], in which set pair represents a set of correspondence between two sets which have some relation. The idea of situation identification by this method is to analyze the system composed of set pair [4], find out the expression of connection number and the calculation method of identity and difference, and analyze the set pair situation, so as to obtain the security situation of the network link [5]. Because this method can deal with the uncertainty caused by fuzzy, random, and incomplete information, it is especially suitable for the security situation identification of the internal network of medical units.…”