Calculate perplexity.
Parameters
----------
ignore_label : int or undef
index of invalid label to ignore when
counting. usually should be -1. Include
all entries if undef.
axis : int (default -1)
The axis from prediction that was used to
compute softmax. By default uses the last
axis.
DESCRIPTION
Custom evaluation metric that takes a sub ref.
Parameters
----------
eval_function : subref
Customized evaluation function.
name : str, optional
The name of the metric
allow_extra_outputs : bool
If true, the prediction outputs can have extra outputs.
This is useful in RNN, where the states are also produced
in outputs for forwarding.
create
Create an evaluation metric.
Parameters
----------
metric : str or sub ref
The name of the metric, or a function
providing statistics given pred, label NDArray.
Module Install Instructions
To install AI::MXNet, copy and paste the appropriate command in to your terminal.