PrimitiveSimilarity (ELKI: Environment for DeveLoping KDD-Applications Supported by Index-Structures)

Type Parameters:

O - object type

All Superinterfaces:

Similarity<O>

All Known Subinterfaces:

ClusteringDistanceSimilarity, DBIDSimilarity, NormalizedPrimitiveSimilarity<O>

All Known Implementing Classes:

AbstractDBIDSimilarity, AbstractVectorSimilarity, ClusteringAdjustedRandIndexSimilarity, ClusteringBCubedF1Similarity, ClusteringFowlkesMallowsSimilarity, ClusteringRandIndexSimilarity, ClusterIntersectionSimilarity, ClusterJaccardSimilarity, HellingerDistance, InvertedDistanceSimilarity, JaccardSimilarityDistance, Kulczynski1Similarity, Kulczynski2Similarity, LaplaceKernel, LinearKernel, PolynomialKernel, RadialBasisFunctionKernel, RationalQuadraticKernel, SigmoidKernel
```
public interface PrimitiveSimilarity<O>
extends Similarity<O>
```
Interface Similarity describes the requirements of any similarity function.

Since:

0.1

Author:

Elke Achtert

Method Summary

All Methods Instance Methods Abstract Methods Default Methods
Modifier and Type	Method	Description
`default <T extends O> SimilarityQuery<T>`	`instantiate(Relation<T> relation)`	Instantiate with a representation to get the actual similarity query.
`double`	`similarity(O o1, O o2)`	Computes the similarity between two given DatabaseObjects according to this similarity function.

Methods inherited from interface elki.similarity.Similarity
getInputTypeRestriction, isSymmetric

- Method Detail
  - similarity
```
double similarity(O o1,
                  O o2)
```
    Computes the similarity between two given DatabaseObjects according to this similarity function.
    
    Parameters:
    
    o1 - first DatabaseObject
    
    o2 - second DatabaseObject
    
    Returns:
    
    the similarity between two given DatabaseObjects according to this similarity function
  - instantiate
```
default <T extends O> SimilarityQuery<T> instantiate(Relation<T> relation)
```
    Description copied from interface: Similarity
    
    Instantiate with a representation to get the actual similarity query.
    
    Specified by:
    
    instantiate in interface Similarity<O>
    
    Parameters:
    
    relation - Representation to use
    
    Returns:
    
    Actual distance query.