de.linguatools.disco

Class CosineVectorSimilarity

java.lang.Object

de.linguatools.disco.CosineVectorSimilarity

All Implemented Interfaces:

VectorSimilarity

public class CosineVectorSimilarity
extends java.lang.Object
implements VectorSimilarity

Computes the cosine similarity between two vectors.

Constructor Summary

Constructors

Constructor and Description
CosineVectorSimilarity()

Method Summary

Modifier and Type	Method and Description
double	computeSimilarity(org.apache.lucene.document.Document doc1, org.apache.lucene.document.Document doc2) Compute similarity between two vectors stored in Lucene Documents.
double	computeSimilarity(float[] denseVector1, float[] denseVector2) Compute similarity between two dense vectors.
double	computeSimilarity(java.util.Map<java.lang.String,java.lang.Float> mapVector1, java.util.Map<java.lang.String,java.lang.Float> mapVector2) Compute similarity between two sparse vectors.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

CosineVectorSimilarity

public CosineVectorSimilarity()

Method Detail

computeSimilarity

public double computeSimilarity(float[] denseVector1,
                                float[] denseVector2)

Description copied from interface: VectorSimilarity

Compute similarity between two dense vectors.

Specified by:

computeSimilarity in interface VectorSimilarity

Returns:

computeSimilarity

public double computeSimilarity(java.util.Map<java.lang.String,java.lang.Float> mapVector1,
                                java.util.Map<java.lang.String,java.lang.Float> mapVector2)

Description copied from interface: VectorSimilarity

Compute similarity between two sparse vectors.

Specified by:

computeSimilarity in interface VectorSimilarity

Returns:

computeSimilarity

public double computeSimilarity(org.apache.lucene.document.Document doc1,
                                org.apache.lucene.document.Document doc2)

Description copied from interface: VectorSimilarity

Compute similarity between two vectors stored in Lucene Documents.

Specified by:

computeSimilarity in interface VectorSimilarity

Returns: