K-Means Trap 历些毛子代枝大等 XIDIAN UNIVERSITY 4.5 4.0 Defects of K-Means,K- 3.5 Medoid,K-XXX 3.0 →How many K? 20 Where are the initial centers? 1.5 >Do the data really form a 0.5 sphere? 0.0 >Do the data really follow Minkowski /Euclidean distance? 12 1.0 0.6 2017/4/13 Software Engineering K-Means Trap 8 Defects of K-Means, K￾Medoid,K-XXX  How many K?  Where are the initial centers?  Do the data really form a sphere?  Do the data really follow Minkowski /Euclidean distance?