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Various clustering algorithm implementations for all primitive types including random, random forest, K-Means (Exact, Hierarchical and Approximate), ...
/**
* Copyright (c) 2011, The University of Southampton and the individual contributors.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without modification,
* are permitted provided that the following conditions are met:
*
* * Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
*
* * Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
*
* * Neither the name of the University of Southampton nor the names of its
* contributors may be used to endorse or promote products derived from this
* software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR
* ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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*/
package org.openimaj.ml.clustering.spectral;
import java.util.Iterator;
import org.openimaj.util.pair.DoubleObjectPair;
import ch.akuhn.matrix.Vector;
import ch.akuhn.matrix.eigenvalues.Eigenvalues;
/**
* A forward or backward iterator of eigen vector/value pairs
* @author Sina Samangooei ([email protected])
*
*/
public final class FBEigenIterator implements
Iterator> {
private int pos;
private int dir;
private double[] values;
private Vector[] vectors;
private int lim;
/**
* @param evd
*/
public FBEigenIterator(Eigenvalues evd) {
this.values = evd.value;
this.vectors = evd.vector;
this.pos = values.length-1;
this.dir = -1;
this.lim = -1;
}
@Override
public void remove() { throw new UnsupportedOperationException();}
@Override
public DoubleObjectPair next() {
DoubleObjectPair ret = new DoubleObjectPair(this.values[pos], this.vectors[pos]);
pos += dir;
return ret;
}
@Override
public boolean hasNext() {
return pos != lim;
}
}