聚类分析是研究用数学方法对事物进行分类为主要目的的一种多元统计方法。它的产生可以从数量分类说起,数量分类首先是生物学发展的需要。到二十世纪被人类描述和分类的物种已超过百万种,实践对人们提出了新的要求,凭经验、形态进行分类的传统方式已不能满足客观需要,而要求用新的观点全面认识种类繁多的生物世界,精确地说明物种在进化系统中所处的地位,于是数学工具很自然地被引进分类学,使分类进入定量阶段并加速了分类过程。由于生物的形态常表现为多种特征,通过这些特征表现出生物同种个体间的相似性、不 Clustering analysis is a multivariate statistical method that studies the classification of things by mathematical methods for the primary purpose. It can be said from the quantitative classification, quantitative classification is first of biological development needs. By the 20th century, more than one million species have been described and classified by human beings. The traditional methods of classifying people by their new requirements, practices, and forms have failed to meet the objective needs and require a new understanding of the species With its numerous biological worlds that pinpoint the species’s place in the evolutionary system, mathematical tools are naturally introduced into taxonomy, bringing classification into the quantitative phase and accelerating the classification process. Due to the biological morphology is often manifested as a variety of features, through these characteristics of the same organisms show the same species of individuals, not