net.sourceforge.nite.datainspection.calc
Interface DistanceMetric

All Known Implementing Classes:

BooleanMetric, DiceMetric, DiceMetricsForStringSetValues, DiceMetricsForStringTwoSetValues, DiceMetricsForTwoSetValues

public interface DistanceMetric

an interface for distance metrics for alpha.
SEE PACKAGE DOCUMENTATION
The metric for distance defines the distances between two Values. It should satisfy:

• distance(v,v) = 0;
• distance(a,b) = distance(b,a)
• triangularity: distance(a,b) + distance(b,c) >= distance (a,c) (ie: "the direct way is not longer than via some intermediate point")

Usually: distance == 1 - similarity

Author:

Rieks op den Akker

Method Summary

double

distance(Value f, Value s)

Method Detail

distance

double distance(Value f,
                Value s)

Returns:

the distance between f and s on a scale [0,1] where 0 means they are equal and 1 means they are completely different