NAME

MPSMatrixLogSoftMax

SYNOPSIS

#import <MPSMatrixSoftMax.h>

Inherits MPSMatrixSoftMax.

Detailed Description

This depends on Metal.framework.

A logarithmic softmax kernel that operates on matrices.

A MPSMatrixLogSoftMax object computes:

            B_ij = ln { Exp { A_ij } / ( Sum_k Exp { A_ik } ) } = A_ij - ln { Sum_k Exp { A_ik } }


        A and B are matrices which are represented by MPSMatrix


        objects. This filter computes the same result for MPSMatrices as


        MPSCNNLogSoftMax filter does for MPSImages by interpreting the columns


        of the matrix as feature channels, that is the sum runs over column indices.

Author

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