Module org.apache.lucene.core
Package org.apache.lucene.internal.vectorization

Class DefaultVectorUtilSupport

java.lang.Object
org.apache.lucene.internal.vectorization.DefaultVectorUtilSupport
All Implemented Interfaces:
VectorUtilSupport
final class DefaultVectorUtilSupport extends Object implements VectorUtilSupport

  • Constructor Summary

    Constructors
    Constructor
    Description
    DefaultVectorUtilSupport()
     

  • Method Summary

    Modifier and Type
    Method
    Description
    float
    cosine(byte[] a, byte[] b)
    Returns the cosine similarity between the two byte vectors.
    float
    cosine(float[] a, float[] b)
    Returns the cosine similarity between the two vectors.
    int
    dotProduct(byte[] a, byte[] b)
    Returns the dot product computed over signed bytes.
    float
    dotProduct(float[] a, float[] b)
    Calculates the dot product of the given float arrays.
    private static float
    fma(float a, float b, float c)
     
    int
    int4DotProduct(byte[] a, boolean apacked, byte[] b, boolean bpacked)
    Returns the dot product over the computed bytes, assuming the values are int4 encoded.
    int
    squareDistance(byte[] a, byte[] b)
    Returns the sum of squared differences of the two byte vectors.
    float
    squareDistance(float[] a, float[] b)
    Returns the sum of squared differences of the two vectors.

    Methods inherited from class java.lang.Object

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

  • Constructor Details

    • DefaultVectorUtilSupport

      DefaultVectorUtilSupport()

  • Method Details

    • fma

      private static float fma(float a, float b, float c)

    • dotProduct

      public float dotProduct(float[] a, float[] b)
      Description copied from interface: VectorUtilSupport
      Calculates the dot product of the given float arrays.
      Specified by:
      dotProduct in interface VectorUtilSupport

    • cosine

      public float cosine(float[] a, float[] b)
      Description copied from interface: VectorUtilSupport
      Returns the cosine similarity between the two vectors.
      Specified by:
      cosine in interface VectorUtilSupport

    • squareDistance

      public float squareDistance(float[] a, float[] b)
      Description copied from interface: VectorUtilSupport
      Returns the sum of squared differences of the two vectors.
      Specified by:
      squareDistance in interface VectorUtilSupport

    • dotProduct

      public int dotProduct(byte[] a, byte[] b)
      Description copied from interface: VectorUtilSupport
      Returns the dot product computed over signed bytes.
      Specified by:
      dotProduct in interface VectorUtilSupport

    • int4DotProduct

      public int int4DotProduct(byte[] a, boolean apacked, byte[] b, boolean bpacked)
      Description copied from interface: VectorUtilSupport
      Returns the dot product over the computed bytes, assuming the values are int4 encoded.
      Specified by:
      int4DotProduct in interface VectorUtilSupport

    • cosine

      public float cosine(byte[] a, byte[] b)
      Description copied from interface: VectorUtilSupport
      Returns the cosine similarity between the two byte vectors.
      Specified by:
      cosine in interface VectorUtilSupport

    • squareDistance

      public int squareDistance(byte[] a, byte[] b)
      Description copied from interface: VectorUtilSupport
      Returns the sum of squared differences of the two byte vectors.
      Specified by:
      squareDistance in interface VectorUtilSupport