ML: p(a max 20x-sj)22-0 MSE: na as-aplaya e同-4 d 1 where K= UESTC 2o2p可 4ML: MSE: 4 UESTC p y(  )max ( ( )) ( ) 1 0 k i i i i s y s   =   − =   MS    p y d ( )  − =  α ( ) ( ) ( ) ( ) ( ) ( ( ))2 2 1 1 exp 2 k i i i p y p p y p y s p y        =   = = − −      ( ) ( ) / 2 2 1 2 where k p y   =