maspack.solvers

Class NMFactorizationTest

java.lang.Object

maspack.util.UnitTest

maspack.solvers.NMFactorizationTest

public class NMFactorizationTest
extends UnitTest

Constructor Summary

Constructors

Constructor and Description
NMFactorizationTest()

Method Summary

Modifier and Type	Method and Description
static void	main(java.lang.String[] args)
void	test()
void	testErrorHandling() Tests error handling for improper arguments and state.
void	testExactRecovery() Tests that an exactly factorable matrix is recovered, both in terms of its residual and of the factors themselves.
void	testGeneralFactorization() Tests the factorization of matrices which are not exactly factorable, checking non-negativity of the factors and consistency of the reported residual and VAF with values computed directly from the factors.
void	testInitializationAndRestarts() Tests random initialization and restarts.
void	testMonotonicity() Tests that the residual decreases monotonically with the number of iterations, as it must for the exact block coordinate descent performed by the ANLS update.
void	testMultiplicativeUpdate() Tests the multiplicative update.
void	testOrderingAndNormalization() Tests factor ordering and normalization.
void	testRegularization() Tests that regularization is applied and does not break non-negativity.
void	testVAFs() Tests the VAF sweep used to select the number of factors.

Methods inherited from class maspack.util.UnitTest

check, checkEquals, checkEquals, checkEquals, checkEquals, checkEquals, checkEquals, checkEquals, checkEquals, checkEquals, checkEquals, checkNormedEquals, checkNormedEquals, getSilent, printUsageAndExit, runtest, setSilent

Methods inherited from class java.lang.Object

equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

NMFactorizationTest

public NMFactorizationTest()

Method Detail

testExactRecovery

public void testExactRecovery()

Tests that an exactly factorable matrix is recovered, both in terms of its residual and of the factors themselves.

testGeneralFactorization

public void testGeneralFactorization()

Tests the factorization of matrices which are not exactly factorable, checking non-negativity of the factors and consistency of the reported residual and VAF with values computed directly from the factors.

testMonotonicity

public void testMonotonicity()

Tests that the residual decreases monotonically with the number of iterations, as it must for the exact block coordinate descent performed by the ANLS update.

testMultiplicativeUpdate

public void testMultiplicativeUpdate()

Tests the multiplicative update. This converges more slowly than ANLS, so the tolerances are looser.

testRegularization

public void testRegularization()

Tests that regularization is applied and does not break non-negativity.

testOrderingAndNormalization

public void testOrderingAndNormalization()

Tests factor ordering and normalization. None of these may change the product W H.

testInitializationAndRestarts

public void testInitializationAndRestarts()

Tests random initialization and restarts.

testVAFs

public void testVAFs()

Tests the VAF sweep used to select the number of factors.

testErrorHandling

public void testErrorHandling()

Tests error handling for improper arguments and state.

test

public void test()

Overrides:

test in class UnitTest

main

public static void main(java.lang.String[] args)