摘要
在数量分类中，模糊图论的最大树方法可直接依据模糊相似系数得到树状图。但至目前为止，模糊图论分类中的截取水平通常由分析者主观给定，或者是以逐步试验、逐步修改的方法确定的。用太白山针叶林的数量分类研究结果表明，模糊图论分类的截取水平应选在模糊关系变化较大处，并可用数学方法确定。研究的植被分类实例结果与模糊聚类分析是一致的。
The maximal tree method of fuzzy praph theory can produce tree praph from fuzzy similar coefficient matrix in the numerical classification.The determination of cutting levels in fuzzy praph clustering up to date is more or less a subjective or trial error trial or trial alteration trialprocess.In this paper,the coniferous forests in Taibai mountain are classified by the fuzzy graph clustering.The result show that the cutting level should be set in those places where the preater variations of fuzzy relation are found,and can determined with mathematical method.The result analysing the example is dentical with the result of fuzzy clustering analysis.
出处
《西北植物学报》
CAS
CSCD
1998年第3期445-449,共5页
Acta Botanica Boreali-Occidentalia Sinica
基金
陕西师范大学青年科学基金
关键词
模糊图论分类
截取水平选择
植被分类
fuzzy graph clustering,cutting level determination,coniferous forests
