Module org.elasticsearch.server

Package org.elasticsearch.index.mapper.vectors

Class VectorEncoderDecoder

java.lang.Object

org.elasticsearch.index.mapper.vectors.VectorEncoderDecoder

public final class VectorEncoderDecoder
extends Object

Field Summary

Fields

Modifier and Type	Field	Description
static final byte	INT_BYTES

Method Summary

Modifier and Type	Method	Description
static void	decodeDenseVector(IndexVersion indexVersion, org.apache.lucene.util.BytesRef vectorBR, float[] vector)	Decodes a BytesRef into the provided array of floats
static float	decodeMagnitude(IndexVersion indexVersion, org.apache.lucene.util.BytesRef vectorBR)	Decodes the last 4 bytes of the encoded vector, which contains the vector magnitude.
static int	denseVectorLength(IndexVersion indexVersion, org.apache.lucene.util.BytesRef vectorBR)
static float	getMagnitude(IndexVersion indexVersion, org.apache.lucene.util.BytesRef vectorBR, float[] decodedVector)

Methods inherited from class java.lang.Object

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

Field Details

INT_BYTES

public static final byte INT_BYTES

See Also:

• Constant Field Values

Method Details

denseVectorLength

public static int denseVectorLength(IndexVersion indexVersion,
 org.apache.lucene.util.BytesRef vectorBR)

decodeMagnitude

public static float decodeMagnitude(IndexVersion indexVersion,
 org.apache.lucene.util.BytesRef vectorBR)

Decodes the last 4 bytes of the encoded vector, which contains the vector magnitude. NOTE: this function can only be called on vectors from an index version greater than or equal to 7.5.0, since vectors created prior to that do not store the magnitude.

getMagnitude

public static float getMagnitude(IndexVersion indexVersion,
 org.apache.lucene.util.BytesRef vectorBR,
 float[] decodedVector)

decodeDenseVector

public static void decodeDenseVector(IndexVersion indexVersion,
 org.apache.lucene.util.BytesRef vectorBR,
 float[] vector)

Decodes a BytesRef into the provided array of floats

Parameters:

vectorBR - - dense vector encoded in BytesRef

vector - - array of floats where the decoded vector should be stored