mlpack::amf::RandomAcolInitialization< columnsToAverage > Class Template Reference

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

template<size_t columnsToAverage = 5>

mlpack::amf::RandomAcolInitialization< columnsToAverage >::RandomAcolInitialization ( )

inline

Definition at line 48 of file random_acol_init.hpp.

Member Function Documentation

template<size_t columnsToAverage = 5>

template<typename MatType >

static void mlpack::amf::RandomAcolInitialization< columnsToAverage >::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 mlpack::Log::Warn.

template<size_t columnsToAverage = 5>

template<typename Archive >

void mlpack::amf::RandomAcolInitialization< columnsToAverage >::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.

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

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