Computes the LSTM cell backward propagation for the entire time sequence.
tf.raw_ops.BlockLSTMGrad(
seq_len_max, x, cs_prev, h_prev, w, wci, wcf, wco, b, i, cs, f, o, ci, co, h,
cs_grad, h_grad, use_peephole, name=None
)
This implementation is to be used in conjunction of LSTMBlock.
Args | |
---|---|
seq_len_max
|
A Tensor of type int64 .
Maximum time length actually used by this input. Outputs are padded
with zeros beyond this length.
|
x
|
A Tensor . Must be one of the following types: half , float32 .
The sequence input to the LSTM, shape (timelen, batch_size, num_inputs).
|
cs_prev
|
A Tensor . Must have the same type as x .
Value of the initial cell state.
|
h_prev
|
A Tensor . Must have the same type as x .
Initial output of cell (to be used for peephole).
|
w
|
A Tensor . Must have the same type as x . The weight matrix.
|
wci
|
A Tensor . Must have the same type as x .
The weight matrix for input gate peephole connection.
|
wcf
|
A Tensor . Must have the same type as x .
The weight matrix for forget gate peephole connection.
|
wco
|
A Tensor . Must have the same type as x .
The weight matrix for output gate peephole connection.
|
b
|
A Tensor . Must have the same type as x . The bias vector.
|
i
|
A Tensor . Must have the same type as x .
The input gate over the whole time sequence.
|
cs
|
A Tensor . Must have the same type as x .
The cell state before the tanh over the whole time sequence.
|
f
|
A Tensor . Must have the same type as x .
The forget gate over the whole time sequence.
|
o
|
A Tensor . Must have the same type as x .
The output gate over the whole time sequence.
|
ci
|
A Tensor . Must have the same type as x .
The cell input over the whole time sequence.
|
co
|
A Tensor . Must have the same type as x .
The cell after the tanh over the whole time sequence.
|
h
|
A Tensor . Must have the same type as x .
The output h vector over the whole time sequence.
|
cs_grad
|
A Tensor . Must have the same type as x .
The current gradient of cs.
|
h_grad
|
A Tensor . Must have the same type as x .
The gradient of h vector.
|
use_peephole
|
A bool . Whether to use peephole weights.
|
name
|
A name for the operation (optional). |
Returns | |
---|---|
A tuple of Tensor objects (x_grad, cs_prev_grad, h_prev_grad, w_grad, wci_grad, wcf_grad, wco_grad, b_grad).
|
|
x_grad
|
A Tensor . Has the same type as x .
|
cs_prev_grad
|
A Tensor . Has the same type as x .
|
h_prev_grad
|
A Tensor . Has the same type as x .
|
w_grad
|
A Tensor . Has the same type as x .
|
wci_grad
|
A Tensor . Has the same type as x .
|
wcf_grad
|
A Tensor . Has the same type as x .
|
wco_grad
|
A Tensor . Has the same type as x .
|
b_grad
|
A Tensor . Has the same type as x .
|