集成学习选择必要性分析

Improving the generalization ability of neural network is a key issue of the neural network study. In general, the ensemble of individual networks can effectively improve the generalization ability。However，there are some exceptions, not all of ensembles in a group of network with diversity can improve the generation ability. It was proved that complement is the key to the generalization ability of ensemble systems. Because not all of the individual networks can complement each other well, some network existence mutual exclusion, it is necessary to do ensemble selectively.