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bp神经网络的调用问题。
为什么 inputnum=4; hiddennum=20; outputnum=4; net=newff(inputn,outputn,hiddennum); 与 net=newff(minmax(inputn),[20,4],{'tans...
3 years ago | 1 answer | 0
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神经网络bp函数拟合不准。
初学神经网络试着玩下函数拟合， 随便写个函数y=x1.*x1-x2.^3+3*x1.*x2-2*x2+1; 之后用x1x2和计算的y值反推上函数（就是明知道函数是啥，就想用神经网络再给算出来） 训练数据经过神经网络算的结果与预期值相差不大； ！...
3 years ago | 0 answers | 0
