/usr/include/torch/LogMixer.h is in libtorch3-dev 3.1-2.1build1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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//
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#ifndef LOG_MIXER_INC
#define LOG_MIXER_INC
#include "GradientMachine.h"
namespace Torch {
/** LogMixer useful for experts mixtures.
Formally speaking, it computes:
$outputs[i] = log(\sum_j exp(log_{a_j}) + log(LogInputs_j[i]))$
where
\begin{itemize}
\item ${log_{a_1},...,log_{a_n}}$ are the first #n_experts# inputs
of the machine.
\item $LogInputs_j$ are the outputs of the j-th expert.
Therefore, the inputs given to the machine have the following structure:
${log_a, LogOutputsExpert_1, LogOutputsExpert_2, ...}$.
\end{itemize}
@author Ronan Collobert (collober@idiap.ch)
*/
class LogMixer : public GradientMachine
{
public:
int n_experts;
//-----
///
LogMixer(int n_inputs_, int n_outputs_per_expert);
//-----
virtual void frameForward(int t, real *f_inputs, real *f_outputs);
virtual void frameBackward(int t, real *f_inputs, real *beta_, real *f_outputs, real *alpha_);
virtual ~LogMixer();
};
}
#endif
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