This class initializes the W matrix of the AMF algorithm by averaging p randomly chosen columns of V. More...

Public Member Functions
	RandomAcolInitialization ()

template < typename Archive >
void	Serialize (Archive &, const unsigned int)
	Serialize the object (in this case, there is nothing to serialize). More...

Static Public Member Functions
template < typename MatType >
static void	Initialize (const MatType &V, const size_t r, arma::mat &W, arma::mat &H)

Detailed Description

template<size_t columnsToAverage = 5>
class mlpack::amf::RandomAcolInitialization< columnsToAverage >

This class initializes the W matrix of the AMF algorithm by averaging p randomly chosen columns of V.

In this case, p is a template parameter. H is then filled using a uniform distribution in the range [0, 1].

This simple initialization is the "random Acol initialization" found in the following paper:

@techreport{langville2014algorithms,
  title = {Algorithms, Initializations, and Convergence for the Nonnegative
      Matrix Factorization},
  author = {Langville, A.N. and Meyer, C.D. and Albright, R. and Cox, J. and
      Duling, D.},
  year = {2014},
  institution = {NCSU Technical Report Math 81706}
}

Template Parameters

columnsToAverage The number of random columns to average for each column of W.

Definition at line 44 of file random_acol_init.hpp.

Constructor & Destructor Documentation

◆ RandomAcolInitialization()

RandomAcolInitialization ( )

inline

Definition at line 48 of file random_acol_init.hpp.

Member Function Documentation

◆ Initialize()

static void Initialize	(	const MatType &	V,
		const size_t	r,
		arma::mat &	W,
		arma::mat &	H
	)

inlinestatic

Definition at line 52 of file random_acol_init.hpp.

References mlpack::math::RandInt(), and Log::Warn.

◆ Serialize()

void Serialize	(	Archive &	,
		const unsigned	int
	)

inline

Serialize the object (in this case, there is nothing to serialize).

Definition at line 88 of file random_acol_init.hpp.

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

src/mlpack/methods/amf/init_rules/random_acol_init.hpp

Public Member Functions

Static Public Member Functions