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package de.lmu.ifi.dbs.elki.data.synthetic.bymodel.distribution;
/*
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/>.
*/
/**
* Interface for a simple distribution generator
* with a PDF, i.e. it can also compute a density
*
* @author Erich Schubert
*/
public interface Distribution {
/**
* Generate a new random value
* @return new generated value
*/
public double generate();
/**
* Return the density of an existing value
* @param val existing value
* @return distribution density
*/
public double explain(double val);
/**
* Describe the generator
* @return description
*/
@Override
public String toString();
}
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