RNN #4: Backpropagation through time | BPTT | RNN
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- เผยแพร่เมื่อ 11 ก.ย. 2024
- Backpropagation through time
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hi i have a small doubt
how to change/ tune variable values of wa and those values between the hidden layer nodes
?
Can you tell me what is deferrent between backpropagation through time and backpropagation?
Backpropagation through time is simply a method of applying backpropagation to an unrolled recurrent neural network. Given a RNN, it can be unrolled to a standard feed forward network with shared weights, where each layer in the new network is an iteration in time forward. You backpropagate this unrolled network through time, updating the weights as you go. The only major difference is the shared weights. You can imagine, the weights stay fixed in the unrolled network for each iteration forward in the sequence, but as you backpropagate the loss, the weights are momentarily decoupled and are updated iteratively. The final set of weights at the termination of the backprop (first layer) are now your new set of weights for the RNN. This is how a RNN can handle variable input sequences.
wah kya samjhaya hai ............wah