並列摘要
People used to classify the recognized objects first in order to find the features of them before they learn to understand those objects. Therefore, the knowledge of classification is the basic science for human beings. Similarly, our medical examples in this paper need to be classified, too. According to a series of symptoms, physical features and the result of biochemical inspections, we can diagnose the disease the patients suffer from. Otherwise, according to a series of inspection methods and results, we can divide them into some are suitable for the inspection for type A illness and others are suitable for the inspection for type B illness, etc. In PASW, its main classification method is Cluster Analysis method and DISCRIMINANT method. In Cluster Analysis method, K-Means Cluster Analysis and Hierarchical Cluster Analysis are the most used.