/usr/include/torch/NLLCriterion.h is in libtorch3-dev 3.1-2.1build1.
This file is owned by root:root, with mode 0o644.
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//
// This file is part of Torch 3.1.
//
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// nll criterion.
// simply returns the negative log likelihood
#ifndef NLL_CRITERION_INC
#define NLL_CRITERION_INC
#include "Criterion.h"
namespace Torch {
/** This criterion can be used to train #Distribution# object using
the #GMTrainer# trainer. It then maximizes the log likelihood of the
data.
The #forward# method always return its input, which is the negative log
likelihood, while the #backward# method sets the gradient to -1.
@author Samy Bengio (bengio@idiap.ch)
*/
class NLLCriterion : public Criterion
{
public:
///
NLLCriterion();
virtual void reset();
virtual void forward(Sequence *inputs);
virtual void backward(Sequence *inputs, Sequence *alpha);
virtual ~NLLCriterion();
};
}
#endif
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