 Model  Combination  Parameter  Forecasting 
 a1  Autocorrelation + false nearest neighbors  ,  BPNN  b1  Autocorrelation + false nearest neighbors  ,  EKFNN  a2  Mutual information + false nearest neighbors  ,  BPNN  b2  Mutual information + false nearest neighbors  ,  EKFNN  a3  Autocorrelation + Cao  ,  BPNN  b3  Autocorrelation + Cao  ,  EKFNN  a4  Mutual information + Cao  ,  BPNN  b4  Mutual information + Cao  ,  EKFNN  a5  CC  ,  BPNN  b5  CC  ,  EKFNN 

