决策树C4.5算法结合模糊判决算法的土地评价方法（英文）

为了传统土地评价过程中影响因子存在连续值时难以构建评价模型的缺点,提高土地评价知识表达的可解释性,通过对语义属性采用多重分支,利用分支的统计显著性的启发式技术来实现剪枝,提出了基于C4.5算法挖掘分类规则。并利用模糊推理的方法,给出模糊匹配程度的概念,计算出被评价土地样本与各C4.5规则匹配的模糊程度,然后从中找出模糊匹配程度最大的所对应的规则,被评价样本即可被评价为该规则的结果所示的土地等级。文章提出了一种基于C4.5算法和模糊判决算法的土地资源评价模型构建方法,通过广东省土地评价数据库的实验结果表明,该方法能够适用于土地评价当中,当选取100条规则作为规则库进行土地评价时,获得了86.67%的数量准确率和84.80%的面积准确率。

Land Evaluation Method Based on Decision Tree Produced by C4.5 and Fuzzy Decision

Objective]The aim was to overcome the shortage of being difficult to build land evaluation model when the impact factors had continuous value in the traditional land evaluation process,as well as to improve the intelligibility of the land evaluation knowledge.Method] The land evaluation method combining classification rule extracted by C4.5 algorithm with fuzzy decision was proposed in this study.Result] The result of Second General Soil Survey of Guangdong Province had demonstrated that the method was convenient to extract classification rules,and by using only 100 rules,quantity correct rate 86.67% and area correct rate 84.80% of land evaluation could be obtained.Conclusions] The use of C4.5 algorithm to obtain the rules,combined with fuzzy decision algorithm to build classifiers had got satisfactory results,which provided a practical algorithm for the land evaluation.