de.lmu.ifi.dbs.elki.math.linearalgebra.pca.weightfunctions
Class InverseProportionalStddevWeight
java.lang.Object
de.lmu.ifi.dbs.elki.math.linearalgebra.pca.weightfunctions.InverseProportionalStddevWeight
- All Implemented Interfaces:
- WeightFunction, InspectionUtilFrequentlyScanned
public final class InverseProportionalStddevWeight
- extends Object
- implements WeightFunction
Inverse proportional weight function, scaled using the standard deviation.
1 / (1 + distance/stddev)
Method Summary |
double |
getWeight(double distance,
double max,
double stddev)
Get inverse proportional weight. max is ignored. |
Methods inherited from class java.lang.Object |
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
InverseProportionalStddevWeight
public InverseProportionalStddevWeight()
getWeight
public double getWeight(double distance,
double max,
double stddev)
- Get inverse proportional weight. max is ignored.
- Specified by:
getWeight
in interface WeightFunction
- Parameters:
distance
- distance of the query pointmax
- maximum distance of all included pointsstddev
- standard deviation (i.e. quadratic mean / RMS) of the
included points
- Returns:
- weight for the query point