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PROGRAM:

NAME


mlpack_nmf - non-negative matrix factorization

SYNOPSIS


mlpack_nmf [-h] [-v] -H string -i string -r int -W string [-m int] [-e double] [-s int] [-u string] -V

DESCRIPTION


This program performs non-negative matrix factorization on the given dataset, storing the
resulting decomposed matrices in the specified files. For an input dataset V, NMF
decomposes V into two matrices W and H such that

V = W * H

where all elements in W and H are non-negative. If V is of size (n x m), then W will be of
size (n x r) and H will be of size (r x m), where r is the rank of the factorization
(specified by --rank).

Optionally, the desired update rules for each NMF iteration can be chosen from the
following list:

· multdist: multiplicative distance-based update rules (Lee and Seung 1999)

· multdiv: multiplicative divergence-based update rules (Lee and Seung 1999)

· als: alternating least squares update rules (Paatero and Tapper 1994)

The maximum number of iterations is specified with --max_iterations, and the minimum
residue required for algorithm termination is specified with --min_residue.

REQUIRED OPTIONS


--h_file (-H) [string]
File to save the calculated H matrix to.

--input_file (-i) [string]
Input dataset to perform NMF on.

--rank (-r) [int]
Rank of the factorization.

--w_file (-W) [string]
File to save the calculated W matrix to.

OPTIONS


--help (-h)
Default help info.

--info [string]
Get help on a specific module or option. Default value ''.

--max_iterations (-m) [int]
Number of iterations before NMF terminates (0 runs until convergence. Default value
10000.

--min_residue (-e) [double]
The minimum root mean square residue allowed for each iteration, below which the
program terminates. Default value 1e-05.

--seed (-s) [int]
Random seed. If 0, 'std::time(NULL)' is used. Default value 0. --update_rules
(-u) [string] Update rules for each iteration; ( multdist | multdiv | als ).
Default value 'multdist'.

--verbose (-v)
Display informational messages and the full list of parameters and timers at the
end of execution.

--version (-V)
Display the version of mlpack.

ADDITIONAL INFORMATION


For further information, including relevant papers, citations, and theory, consult the
documentation found at http://www.mlpack.org or included with your DISTRIBUTION OF MLPACK.

mlpack_nmf(1)

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