【正文】
MATLAB中的神經(jīng)網(wǎng)絡(luò)及其應(yīng)用 :以 BP為例 主講:王茂芝 副教授 1 一個預(yù)測問題 ? 已知 :一組標準輸入和輸出數(shù)據(jù) (見附件 ) ? 求解 :預(yù)測另外一組輸入對應(yīng)的輸出 ? 背景 :略 2 BP網(wǎng)絡(luò) 3 MATLAB中的 newff命令 ? NEWFF Create a feedforward backpropagation work. ? Syntax ? = newff ? = newff(PR,[S1 S2...SNl],{TF1 TF2...TFNl},BTF,BLF,PF) 命令 newff中的參數(shù)說明 ? NET = NEWFF creates a new work with a dialog box. ? NEWFF(PR,[S1 S2...SNl],{TF1 TF2...TFNl},BTF,BLF,PF) takes, ? PR Rx2 matrix of min and max values for R input elements. ? Si Size of ith layer, for Nl layers. ? TFi Transfer function of ith layer, default = 39。tansig39。. ? BTF Backprop work training function, default = 39。trainlm39。. ? BLF Backprop weight/bias learning function, default = 39。learngdm39。. ? PF Performance function, default = 39。mse39。. ? and returns an N layer feedforward backprop work. 參數(shù)說明 ? The transfer functions TFi can be any differentiable transfer function such as TANSIG, LOGSIG, or PURELIN. ? The training function BTF can be any of the backprop training functions such as TRAINLM, TRAINBFG, TRAINRP,