3 What's Good Clustering Analysis? High class internal similarity; Low class similarity; As a branch of statistics,the clustering analysis researchi theme is mainly based 0n distance- clustering a high-quality clustering analysis result will be decided on the used clustering method; The implementation of the similarity measure and the method used in clustering method; Ability to discover hidden patterns. ATA 10 Copyright 2019 by Xiaoyu Li.Copyright © 2019 by Xiaoyu Li. 10 3 What’s Good Clustering Analysis?  High class internal similarity;  Low class similarity;  As a branch of statistics, the clustering analysis research theme is mainly based on distance￾clustering ; a high-quality clustering analysis result will be decided on the used clustering method;  The implementation of the similarity measure and the method used in clustering method;  Ability to discover hidden patterns