Selection of Comparative Cases in Land Appraisal Based on Cloud Model and Gray Relevancy Theory
There is a traditional approach named market comparative method,which is used to appraise land price by putting a focus on comparing cases.A review of the developing history of this method highlights some persistent challenges.In this paper,this existing approach is extended through coupling the cloud model,a data-mining technique,with gray relevancy theory.This approach allows the construction of quantitative measurement according to qualitative concept (attribute),simulating human cognizing process.This novel method admits hierarchical describing and exploration of the relationship and proximity between district factors and individual factors.By 1-D cloud generator,we obtain several rules in terms of linguistic atom which confirm the number of overlap cloud.Each rule corresponds to a rules rear that achieves uncertainty ratiocination.In order to prove applicability of this method,it is applied to the selection of comparative cases in land appraisal of Wuhan City.Experimental results show most cases can be correctly discriminated and the better comparative cases are acceptable.Compared with other approaches,this method has better performance in land appraisal.
cloud model gray relevancy theory market comparative method land appraisal
Liu Yang Yanfang Liu Wei Liu Xinying Song Xiongjie Xu
School of Resource and Environmental Science,Wuhan University,129 Luoyu Road,Wuhan,430079,P.R.China School of Resource and Environmental Science,Wuhan University,129 Luoyu Road,Wuhan,430079,P.R.China; Xinxiang Municipal Bureau of Land and Resources,Xinxiang,Henan,453000,P.R.China The Development Zone Branch of Xinxiang Municipal Bureau of Land and Resources,Xinxiang,Henan,453000
国际会议
第16届国际地理信息科学与技术大会(16th International Conference on GeoInformatics and the Joint Conference)
广州
英文
2008-06-28（万方平台首次上网日期，不代表论文的发表时间）