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| 判别分析与决策树分析在化学物质生态危害分类中的应用 | |
| 引用本文： | 周林军,刘济宁,石利利,单正军,陈国松,蔡玉琪.判别分析与决策树分析在化学物质生态危害分类中的应用[J].生态与农村环境学报,2009,25(1). |
| 作者姓名： | 周林军 刘济宁 石利利 单正军 陈国松 蔡玉琪 |
| 作者单位： | 1. 南京工业大学理学院,江苏,南京,210009;环境保护部南京环境科学研究所,江苏,南京,210042 2. 环境保护部南京环境科学研究所,江苏,南京,210042 3. 南京工业大学理学院,江苏,南京,210009 |
| 基金项目： | 国家重点基础研究发展规划(973计划) |
| 摘 要： | 运用Fisher判别、马氏距离判别和决策树分析3种方法对61种环境优先污染物的生态危害程度进行分类,并比较了各模型的分类正确率.结果显示,决策树分析方法分类正确率最高,为92%;马氏距离判别其次,为87%;Fisher判别最低,为75%.决策树分析方法不仅减少了2项评价指标,而且对61个新数据矩阵的多次分析显示其分类能力非常稳定,正确率基本符合正态分布,且保持在92%左右,为3种方法中最优的分类方法. |
| 关 键 词： | Fisher判别 马氏距离判别 决策树 生态危害分类 |
Application of Discriminant Analysis and Decision Tree Analysis to the Classification of Ecological Hazards of Chemicals |
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| ZHOU Lin-jun,LIU Ji-ning,SHI Li-li,SHAN Zheng-jun,CHEN Guo-song,CAI Yu-qi.Application of Discriminant Analysis and Decision Tree Analysis to the Classification of Ecological Hazards of Chemicals[J].Journal of Ecology and Rural Environment,2009,25(1). | |
| Authors: | ZHOU Lin-jun LIU Ji-ning SHI Li-li SHAN Zheng-jun CHEN Guo-song CAI Yu-qi |
| Institution: | 1.College of Science;Nanjing University of Technology;Nanjing 210009;China;2.Nanjing Institute of Environmental Sciences;Ministry of Environmental Protection;Nanjing 210042;China |
| Abstract: | Decision tree analysis,Mahalanobis distance discriminant analysis and Fisher discriminant analysis were employed to classify ecological hazards of 61 chemicals.Comparison between these methods showed 92%,87% and 75%,respectively in correctness of the classification.Decision tree was not only the highest in correctness,but also reduced 2 indexes in the evaluation.Moreover,analyses of the 61-index matrix demonstrated that the classification capacity of the decision tree method was very stable and its correctn... |
| Keywords: | Fisher discriminant Mahalanobis distance discriminant decision tree ecological hazard classification |
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