mlpack_amf_NMFMultiplicativeDistanceUpdate (3)

Public Member Functions

NMFMultiplicativeDistanceUpdate ()

template<typename MatType > void Initialize (const MatType &dataset, const size_t rank)

Static Public Member Functions

template<typename MatType > static void HUpdate (const MatType &V, const arma::mat &W, arma::mat &H)

The update rule for the encoding matrix H. template<typename MatType > static void WUpdate (const MatType &V, arma::mat &W, const arma::mat &H)

The update rule for the basis matrix W.

The multiplicative distance update rules for matrices W and H.

Definition at line 38 of file nmf_mult_dist.hpp.

mlpack::amf::NMFMultiplicativeDistanceUpdate::NMFMultiplicativeDistanceUpdate ()\fC [inline]\fP

Definition at line 42 of file nmf_mult_dist.hpp.

template<typename MatType > static void mlpack::amf::NMFMultiplicativeDistanceUpdate::HUpdate (const MatType &V, const arma::mat &W, arma::mat &H)\fC [inline]\fP, \fC [static]\fP

The update rule for the encoding matrix H. The formula used is \[ H_{a\mu} \leftarrow H_{a\mu} ac{(W^T V)_{a\mu}}{(W^T WH)_{a\mu}} \] The function takes in all the matrices and only changes the value of the H matrix.

Parameters:

V Input matrix to be factorized.

W Basis matrix.

H Encoding matrix to be updated.

Definition at line 84 of file nmf_mult_dist.hpp.

template<typename MatType > void mlpack::amf::NMFMultiplicativeDistanceUpdate::Initialize (const MatType &dataset, const size_trank)\fC [inline]\fP

Definition at line 45 of file nmf_mult_dist.hpp.

template<typename MatType > static void mlpack::amf::NMFMultiplicativeDistanceUpdate::WUpdate (const MatType &V, arma::mat &W, const arma::mat &H)\fC [inline]\fP, \fC [static]\fP

The update rule for the basis matrix W. The formula used is \[ W_{ia} \leftarrow W_{ia} ac{(VH^T)_{ia}}{(WHH^T)_{ia}} \] The function takes in all the matrices and only changes the value of the W matrix.

Parameters:

V Input matrix to be factorized.

W Basis matrix to be updated.

H Encoding matrix.

Definition at line 64 of file nmf_mult_dist.hpp.

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