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

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

All Implemented Interfaces:

WeightFunction, InspectionUtilFrequentlyScanned

public final class InverseLinearWeight
extends Object
implements WeightFunction

Inverse Linear Weight Function. This weight is not particularly reasonable. Instead it serves the purpose of testing the effects of a badly chosen weight function. This function has increasing weight, from 0.1 to 1.0 at distance == max.

Constructor Summary

InverseLinearWeight()

Method Summary

double

getWeight(double distance, double max, double stddev) Linear increasing weight, from 0.1 to 1.0 NOTE: increasing weights are non-standard, and mostly for testing

Methods inherited from class java.lang.Object

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

Constructor Detail

InverseLinearWeight

public InverseLinearWeight()

Method Detail

getWeight

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

Linear increasing weight, from 0.1 to 1.0 NOTE: increasing weights are non-standard, and mostly for testing

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