基于可变集聚类理论的年径流聚类新方法

将可变集中的聚类理论与年径流分类研究相结合，提出了年径流量聚类新方法。新方法考虑了汛期径流量、汛期向枯水期过渡的中介期径流量、枯水期径流量等因子或指标对年径流量分类的不同影响。通过实例分析，比较了新方法与常规方法（均值标准差法）和集对分析分类法的异同，表明新方法在理论与实际应用上的合理性与科学性，可应用于水文水资源系统年径流丰枯分类；最后分析了常规法、集对分析分类法在年径流分类中存在的问题及其理论根源。

A new approach to annual runoff classification based on theory of variable sets clustering

By combining the theory of variable sets clustering with annual runoff classification,a new approach to annual runoff classification,named variable sets clustering approach,is proposed.The new approach takes into account the different influences of flood season runoff,non-flood season runoff and dry season runoff on annual runoff classification.Through analysis of a practical case,the differences between conventional method and the new approach is pointed out,which shows that the presented approach is reasonable and scientific.Therefore,it can be used in classifying annual runoff.The problems of conventional method and ser pair analysis in annual runoff classification and their theoretic origins are discussed.