基于Rough集理论的旅游资源的计算机建模评价

A Model of Evaluation and Analysis for Tourism Resources Based on Rough Sets Theory

Rough集理论是一种处理不精确性、不确定性知识的数学工具,属性约简是粗糙集理论研究中的重要内容之一,而由定义来计算约简与核是一个典型的NP难题。提出分层思想将众多属性划分为不同的层次,结合分辨矩阵利用一种有效的基于粗集理论的权重确定方法逐层求出各个层次的最小约简及确定各属性的权重,从而使知识约简的工作得以简化,并以三明市部分县市旅游资源评价为例说明了结果的有效性。

Rough sets theory is a new mathematical tool to deal with inaccuracy and uncertainty knowledge.Reduction of attribute is one of the important topics in the research on rough sets theory.Calculating reduction and core according to definition is a NP-hard problem.This paper puts forward the idea of several different layers, as well as an effective method of calculating minimal reduction and attribute weight layer by layer through discernable martix based on rough sets theory,it makes knowledge reduction more simply than before.The effectiveness of the result obtained is demonstrated by an example of evaluation for tourism resources of some counties of Sanming.