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package de.lmu.ifi.dbs.elki.algorithm.outlier.spatial;
/*
This file is part of ELKI:
Environment for Developing KDD-Applications Supported by Index-Structures
Copyright (C) 2015
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.algorithm.outlier.spatial.neighborhood.NeighborSetPredicate;
import de.lmu.ifi.dbs.elki.distance.distancefunction.DistanceFunction;
import de.lmu.ifi.dbs.elki.distance.distancefunction.PrimitiveDistanceFunction;
import de.lmu.ifi.dbs.elki.distance.distancefunction.minkowski.EuclideanDistanceFunction;
import de.lmu.ifi.dbs.elki.utilities.optionhandling.OptionID;
import de.lmu.ifi.dbs.elki.utilities.optionhandling.parameterization.Parameterization;
import de.lmu.ifi.dbs.elki.utilities.optionhandling.parameters.ObjectParameter;
/**
* Abstract base class for distance-based spatial outlier detection methods.
*
* @author Ahmed Hettab
* @since 0.4.0
*
* @param <N> Object type for neighborhood
* @param <O> Non-spatial object type
*/
public abstract class AbstractDistanceBasedSpatialOutlier<N, O> extends AbstractNeighborhoodOutlier<N> {
/**
* Parameter to specify the non spatial distance function to use
*/
public static final OptionID NON_SPATIAL_DISTANCE_FUNCTION_ID = new OptionID("spatialoutlier.nonspatialdistance", "The distance function to use for non spatial attributes");
/**
* The distance function to use
*/
private DistanceFunction<O> nonSpatialDistanceFunction;
/**
* Constructor.
*
* @param npredf Neighborhood predicate factory
* @param nonSpatialDistanceFunction Distance function to use on the
* non-spatial attributes.
*/
public AbstractDistanceBasedSpatialOutlier(NeighborSetPredicate.Factory<N> npredf, DistanceFunction<O> nonSpatialDistanceFunction) {
super(npredf);
this.nonSpatialDistanceFunction = nonSpatialDistanceFunction;
}
/**
* Get the non-spatial relation
*
* @return the distance function to use on the non-spatial attributes
*/
protected DistanceFunction<O> getNonSpatialDistanceFunction() {
return nonSpatialDistanceFunction;
}
/**
* Parameterization class.
*
* @author Ahmed Hettab
*
* @apiviz.exclude
*
* @param <N> Object type for neighborhood
* @param <O> Non-spatial object type
*/
public abstract static class Parameterizer<N, O> extends AbstractNeighborhoodOutlier.Parameterizer<N> {
/**
* The distance function to use on the non-spatial attributes.
*/
protected PrimitiveDistanceFunction<O> distanceFunction = null;
@Override
protected void makeOptions(Parameterization config) {
super.makeOptions(config);
ObjectParameter<PrimitiveDistanceFunction<O>> distanceFunctionP = makeParameterDistanceFunction(EuclideanDistanceFunction.class, PrimitiveDistanceFunction.class);
if(config.grab(distanceFunctionP)) {
distanceFunction = distanceFunctionP.instantiateClass(config);
}
}
}
}
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