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package de.lmu.ifi.dbs.elki.index.tree.metrical.mtreevariants.mktrees.mkapp;
/*
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.distance.distancevalue.NumberDistance;
import de.lmu.ifi.dbs.elki.index.tree.metrical.mtreevariants.MTreeEntry;
/**
* Defines the requirements for an entry in an MkCop-Tree node. Additionally to
* an entry in an M-Tree conservative approximation of the knn distances is
* provided.
*
* @author Elke Achtert
*
* @apiviz.composedOf PolynomialApproximation
*/
interface MkAppEntry<D extends NumberDistance<D, ?>> extends MTreeEntry<D> {
/**
* Returns the approximated value at the specified k.
*
* @param k the parameter k of the knn distance
* @return the approximated value at the specified k
*/
public double approximatedValueAt(int k);
/**
* Returns the polynomial approximation.
*
* @return the polynomial approximation
*/
public PolynomialApproximation getKnnDistanceApproximation();
/**
* Sets the polynomial approximation.
*
* @param approximation the polynomial approximation to be set
*/
public void setKnnDistanceApproximation(PolynomialApproximation approximation);
}
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