mlpack::nmf::WMultiplicativeDivergenceRule Class Reference

The update rule for the basis matrix W. More...

Public Member Functions
	WMultiplicativeDivergenceRule ()
Static Public Member Functions
template<typename MatType >
static void	Update (const MatType &V, arma::mat &W, const arma::mat &H)
	The update function that actually updates the W matrix.

Detailed Description

The update rule for the basis matrix W.

The formula used is

$W_{ia} \leftarrow W_{ia} \frac{\sum_{\mu} H_{a\mu} V_{i\mu}/(WH)_{i\mu}} {\sum_{\nu} H_{a\nu}}$

Definition at line 43 of file mult_div_update_rules.hpp.

mlpack::nmf::WMultiplicativeDivergenceRule::WMultiplicativeDivergenceRule ( ) [inline]

Definition at line 47 of file mult_div_update_rules.hpp.

template<typename MatType >

static void mlpack::nmf::WMultiplicativeDivergenceRule::Update	(	const MatType &	V,
		arma::mat &	W,
		const arma::mat &	H
	)			`[inline, static]`

The update function that actually updates the W matrix.

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 58 of file mult_div_update_rules.hpp.

The documentation for this class was generated from the following file: