## Uses of Classelki.distance.AbstractDatabaseDistance

• Packages that use AbstractDatabaseDistance
Package Description
elki.distance
Distance functions for use within ELKI.
Distance functions deriving distances from, e.g., similarity measures.
elki.distance.external
Distance functions using external data sources.
• ### Uses of AbstractDatabaseDistance in elki.distance

Subclasses of AbstractDatabaseDistance in elki.distance
Modifier and Type Class Description
class  AbstractDBIDRangeDistance
Abstract base class for distance functions that rely on integer offsets within a consecutive range.
class  AbstractIndexBasedDistance<O,​F extends IndexFactory<O>>
Abstract super class for distance functions needing a database index.
class  RandomStableDistance
This is a dummy distance providing random values (obviously not metrical), useful mostly for unit tests and baseline evaluations: obviously this distance provides no benefit whatsoever.
class  SharedNearestNeighborJaccardDistance<O>
SharedNearestNeighborJaccardDistance computes the Jaccard coefficient, which is a proper distance metric.
• ### Uses of AbstractDatabaseDistance in elki.distance.adapter

Modifier and Type Class Description
class  AbstractSimilarityAdapter<O>
Adapter from a similarity function to a distance function.
class  ArccosSimilarityAdapter<O>
Adapter from a normalized similarity function to a distance function using arccos(sim).
class  LinearSimilarityAdapter<O>
Adapter from a normalized similarity function to a distance function using 1 - sim.
class  LnSimilarityAdapter<O>
Adapter from a normalized similarity function to a distance function using -log(sim).
• ### Uses of AbstractDatabaseDistance in elki.distance.external

Subclasses of AbstractDatabaseDistance in elki.distance.external
Modifier and Type Class Description
class  DiskCacheBasedDoubleDistance
Distance function that is based on double distances given by a distance matrix of an external binary matrix file.
class  DiskCacheBasedFloatDistance
Distance function that is based on float distances given by a distance matrix of an external binary matrix file.
class  FileBasedSparseDoubleDistance
Distance function that is based on double distances given by a distance matrix of an external ASCII file.
class  FileBasedSparseFloatDistance
Distance function that is based on float distances given by a distance matrix of an external ASCII file.