NAME
AI::MXNet::AutoGrad - Autograd for NDArray.
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set_is_training
Set status to training/not training. When training, graph will be constructed
for gradient computation. Operators will also run with ctx.is_train=True. For example,
Dropout will drop inputs randomly when is_train=True while simply passing through
if is_train=False.
Parameters
----------
is_train: bool
Returns
-------
previous state before this set.
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mark_variables
Mark AI::MXNet::NDArrays as variables to compute gradient for autograd.
Parameters
----------
variables: array ref of AI::MXNet::NDArrays
gradients: array ref of AI::MXNet::NDArrays
grad_reqs: array ref of strings
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backward
Compute the gradients of outputs w.r.t variables.
Parameters
----------
outputs: array ref of NDArray
out_grads: array ref of NDArray or undef
retain_graph: bool, defaults to false
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compute_gradient
Compute the gradients of outputs w.r.t variables.
Parameters
----------
outputs: array ref of NDArray
Returns
-------
gradients: array ref of NDArray
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grad_and_loss
Return function that computes both gradient of arguments and loss value.
Parameters
----------
func: a perl sub
The forward (loss) function.
argnum: an int or a array ref of int
The index of argument to calculate gradient for.
Returns
-------
grad_and_loss_func: a perl sub
A function that would compute both the gradient of arguments and loss value.
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grad
Return function that computes gradient of arguments.
Parameters
----------
func: a perl sub
The forward (loss) function.
argnum: an int or arry ref of int
The index of argument to calculate gradient for.
Returns
-------
grad_func: a perl function
A function that would compute the gradient of arguments.
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