Estimation for the number of components in a mixture model using stepwise split-and-merge EM algorithm
WangHai Xian, LuoBin, ZhangQuan Bing, WeiSui · Pattern Recognition Letters · 2004
The main difficulty with EM algorithm for mixture model concerns the number of components, say g. This is the question of model selection, and the EM algorithm itself could not estimate g. On the c...