de.lmu.ifi.dbs.elki.math.linearalgebra.pca.weightfunctions
Class LinearWeight

java.lang.Object
  de.lmu.ifi.dbs.elki.math.linearalgebra.pca.weightfunctions.LinearWeight

All Implemented Interfaces:

WeightFunction

public final class LinearWeight
extends Object
implements WeightFunction

Linear weight function, scaled using the maximum such that it goes from 1.0 to 0.1 1 - 0.9 * (distance/max)

Author:

Erich Schubert

Constructor Summary

LinearWeight()

Method Summary

double

getWeight(double distance, double max, double stddev) Linear decreasing weight, from 1.0 to 0.1.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

LinearWeight

public LinearWeight()

Method Detail

getWeight

public double getWeight(double distance,
                        double max,
                        double stddev)

Linear decreasing weight, from 1.0 to 0.1. Stddev is ignored.

Specified by:

getWeight in interface WeightFunction

Parameters:

distance - distance of the query point

max - maximum distance of all included points

stddev - standard deviation (i.e. quadratic mean / RMS) of the included points

Returns:

weight for the query point