de.lmu.ifi.dbs.elki.distance.distancefunction

Interface DBIDRangeDistanceFunction

All Superinterfaces:

DBIDDistanceFunction, DistanceFunction<DBID>

All Known Implementing Classes:

AbstractDBIDRangeDistanceFunction, DiskCacheBasedDoubleDistanceFunction, DiskCacheBasedFloatDistanceFunction, FileBasedDoubleDistanceFunction, FileBasedFloatDistanceFunction

public interface DBIDRangeDistanceFunction
extends DBIDDistanceFunction

Distance functions valid in a static database context only (i.e. for DBIDRanges) For any "distance" that cannot be computed for arbitrary objects, only those that exist in the database and referenced by their ID. Furthermore, the IDs must be contiguous. Example: external precomputed distances

Author:

Erich Schubert

Method Summary

Methods

Modifier and Type	Method and Description
double	distance(int i1, int i2) Compute the distance for two integer offsets.

Methods inherited from interface de.lmu.ifi.dbs.elki.distance.distancefunction.DBIDDistanceFunction

distance

Methods inherited from interface de.lmu.ifi.dbs.elki.distance.distancefunction.DistanceFunction

getInputTypeRestriction, instantiate, isMetric, isSymmetric

Method Detail

distance

double distance(int i1,
              int i2)

Compute the distance for two integer offsets.

Parameters:

i1 - First offset

i2 - Second offset

Returns:

Distance