Because the extreme point of the energy function E(W)(W)(W is weight vector)is equal to zero point of the gradient,tracking the energy function extreme point can be converted into tracking its gradient function zero point.
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- 因為能量函數E(W)(W是權重矢量)的極值點(diǎn)相當于梯度wE(W)的零點(diǎn);因此;對能量函數極值點(diǎn)的跟蹤可以轉化為對其梯度函數零點(diǎn)的跟蹤.