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package de.lmu.ifi.dbs.elki.math.linearalgebra.pca;
/*
This file is part of ELKI:
Environment for Developing KDD-Applications Supported by Index-Structures
Copyright (C) 2011
Ludwig-Maximilians-Universität München
Lehr- und Forschungseinheit für Datenbanksysteme
ELKI Development Team
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU Affero General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU Affero General Public License for more details.
You should have received a copy of the GNU Affero General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
import de.lmu.ifi.dbs.elki.math.linearalgebra.EigenPair;
import java.util.List;
/**
* Encapsulates weak and strong eigenpairs that have been filtered out
* by an eigenpair filter.
*
* @author Elke Achtert
*
* @apiviz.has de.lmu.ifi.dbs.elki.math.linearalgebra.EigenPair
*/
public class FilteredEigenPairs {
/**
* The weak eigenpairs.
*/
private final List<EigenPair> weakEigenPairs;
/**
* The strong eigenpairs.
*/
private final List<EigenPair> strongEigenPairs;
/**
* Creates a new object that encapsulates weak and strong eigenpairs
* that have been filtered out by an eigenpair filter
*
* @param weakEigenPairs the weak eigenpairs
* @param strongEigenPairs the strong eigenpairs
*/
public FilteredEigenPairs(List<EigenPair> weakEigenPairs, List<EigenPair> strongEigenPairs) {
this.weakEigenPairs = weakEigenPairs;
this.strongEigenPairs = strongEigenPairs;
}
/**
* Returns the weak eigenpairs (no copy).
* @return the weak eigenpairs
*/
public List<EigenPair> getWeakEigenPairs() {
return weakEigenPairs;
}
/**
* Counts the strong eigenpairs.
* @return number of strong eigenpairs
*/
public int countWeakEigenPairs() {
return strongEigenPairs.size();
}
/**
* Returns the strong eigenpairs (no copy).
* @return the strong eigenpairs
*/
public List<EigenPair> getStrongEigenPairs() {
return strongEigenPairs;
}
/**
* Counts the strong eigenpairs.
* @return number of strong eigenpairs
*/
public int countStrongEigenPairs() {
return strongEigenPairs.size();
}
/**
* Returns a string representation of the object.
*
* @return a string representation of the object.
*/
@Override
public String toString() {
return "weak EP: " + weakEigenPairs + "\nstrong EP: " + strongEigenPairs;
}
}
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