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package de.lmu.ifi.dbs.elki.result.outlier;
/*
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.result.Result;
/**
* Generic meta information about the value range of an outlier score.
*
* All values can be {@link Double#NaN} if not specified by the algorithm or not
* computed (actual values). For theoretical values, it is explicitly allowed to
* return {@link Double#NEGATIVE_INFINITY} or {@link Double#POSITIVE_INFINITY}.
*
* @author Erich Schubert
*/
public interface OutlierScoreMeta extends Result {
/**
* Get the actual minimum of the value range.
*
* @return minimum or {@link Double#NaN}
*/
public double getActualMinimum();
/**
* Get the actual maximum of the value range.
*
* @return maximum or {@link Double#NaN}
*/
public double getActualMaximum();
/**
* Get the theoretical minimum of the value range.
*
* @return theoretical minimum or {@link Double#NaN}
*/
public double getTheoreticalMinimum();
/**
* Get the theoretical maximum of the value range.
*
* This value may be {@link Double#NEGATIVE_INFINITY} or {@link Double#NaN}.
*
* @return theoretical maximum or {@link Double#NaN}
*/
public double getTheoreticalMaximum();
/**
* Get the theoretical baseline of the value range.
*
* It will be common to see {@link Double#POSITIVE_INFINITY} here.
*
* @return theoretical baseline or {@link Double#NaN}
*/
public double getTheoreticalBaseline();
/**
* Return a normalized value of the outlier score.
*
* @param value outlier score
* @return Normalized value (in 0.0-1.0)
*/
public double normalizeScore(double value);
}
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