Uses of Class
org.apache.lucene.util.ScalarQuantizer

Packages that use ScalarQuantizer

Package	Description
org.apache.lucene.codecs.lucene99	Lucene 9.9 file format.
org.apache.lucene.util	Some utility classes.

Uses of ScalarQuantizer in org.apache.lucene.codecs.lucene99

Fields in org.apache.lucene.codecs.lucene99 declared as ScalarQuantizer

Modifier and Type	Field	Description
private final ScalarQuantizer	Lucene99ScalarQuantizedVectorsWriter.OffsetCorrectedQuantizedByteVectorValues.oldScalarQuantizer
private final ScalarQuantizer	Lucene99ScalarQuantizedVectorsWriter.QuantizedFloatVectorValues.quantizer
(package private) final ScalarQuantizer	Lucene99ScalarQuantizedVectorsReader.FieldEntry.scalarQuantizer
private final ScalarQuantizer	Lucene99ScalarQuantizedVectorsWriter.OffsetCorrectedQuantizedByteVectorValues.scalarQuantizer

Methods in org.apache.lucene.codecs.lucene99 that return ScalarQuantizer

Modifier and Type	Method	Description
(package private) ScalarQuantizer	Lucene99ScalarQuantizedVectorsWriter.FieldWriter.createQuantizer()
ScalarQuantizer	Lucene99HnswVectorsReader.getQuantizationState(String field)
ScalarQuantizer	Lucene99ScalarQuantizedVectorsReader.getQuantizationState(String fieldName)
ScalarQuantizer	QuantizedVectorsReader.getQuantizationState(String fieldName)
private static ScalarQuantizer	Lucene99ScalarQuantizedVectorsWriter.getQuantizedState(KnnVectorsReader vectorsReader, String fieldName)
(package private) static ScalarQuantizer	Lucene99ScalarQuantizedVectorsWriter.mergeAndRecalculateQuantiles(MergeState mergeState, FieldInfo fieldInfo, float confidenceInterval)
(package private) static ScalarQuantizer	Lucene99ScalarQuantizedVectorsWriter.mergeQuantiles(List<ScalarQuantizer> quantizationStates, List<Integer> segmentSizes, float confidenceInterval)
private ScalarQuantizer	Lucene99ScalarQuantizedVectorsWriter.mergeQuantiles(FieldInfo fieldInfo, MergeState mergeState)

Methods in org.apache.lucene.codecs.lucene99 with parameters of type ScalarQuantizer

Modifier and Type	Method	Description
private Lucene99ScalarQuantizedVectorsWriter.ScalarQuantizedCloseableRandomVectorScorerSupplier	Lucene99ScalarQuantizedVectorsWriter.mergeOneFieldToIndex(SegmentWriteState segmentWriteState, FieldInfo fieldInfo, MergeState mergeState, ScalarQuantizer mergedQuantizationState)
static Lucene99ScalarQuantizedVectorsWriter.MergedQuantizedVectorValues	Lucene99ScalarQuantizedVectorsWriter.MergedQuantizedVectorValues.mergeQuantizedByteVectorValues(FieldInfo fieldInfo, MergeState mergeState, ScalarQuantizer scalarQuantizer)
private static float	ScalarQuantizedRandomVectorScorer.quantizeQuery(float[] query, byte[] quantizedQuery, VectorSimilarityFunction similarityFunction, ScalarQuantizer scalarQuantizer)
(package private) static boolean	Lucene99ScalarQuantizedVectorsWriter.shouldRecomputeQuantiles(ScalarQuantizer mergedQuantizationState, List<ScalarQuantizer> quantizationStates)	Returns true if the quantiles of the merged state are too far from the quantiles of the individual states.
(package private) static boolean	Lucene99ScalarQuantizedVectorsWriter.shouldRequantize(ScalarQuantizer existingQuantiles, ScalarQuantizer newQuantiles)	Returns true if the quantiles of the new quantization state are too far from the quantiles of the existing quantization state.

Method parameters in org.apache.lucene.codecs.lucene99 with type arguments of type ScalarQuantizer

Modifier and Type	Method	Description
(package private) static ScalarQuantizer	Lucene99ScalarQuantizedVectorsWriter.mergeQuantiles(List<ScalarQuantizer> quantizationStates, List<Integer> segmentSizes, float confidenceInterval)
(package private) static boolean	Lucene99ScalarQuantizedVectorsWriter.shouldRecomputeQuantiles(ScalarQuantizer mergedQuantizationState, List<ScalarQuantizer> quantizationStates)	Returns true if the quantiles of the merged state are too far from the quantiles of the individual states.

Constructors in org.apache.lucene.codecs.lucene99 with parameters of type ScalarQuantizer

Modifier	Constructor	Description
private	OffsetCorrectedQuantizedByteVectorValues(QuantizedByteVectorValues in, VectorSimilarityFunction vectorSimilarityFunction, ScalarQuantizer scalarQuantizer, ScalarQuantizer oldScalarQuantizer)
	QuantizedFloatVectorValues(FloatVectorValues values, VectorSimilarityFunction vectorSimilarityFunction, ScalarQuantizer quantizer)
(package private)	ScalarQuantizedRandomVectorScorer(VectorSimilarityFunction similarityFunction, ScalarQuantizer scalarQuantizer, RandomAccessQuantizedByteVectorValues values, float[] query)
(package private)	ScalarQuantizedRandomVectorScorerSupplier(VectorSimilarityFunction similarityFunction, ScalarQuantizer scalarQuantizer, RandomAccessQuantizedByteVectorValues values)

Uses of ScalarQuantizer in org.apache.lucene.util

Methods in org.apache.lucene.util that return ScalarQuantizer

Modifier and Type	Method	Description
static ScalarQuantizer	ScalarQuantizer.fromVectors(FloatVectorValues floatVectorValues, float confidenceInterval)	See fromVectors(FloatVectorValues, float, int) for details on how the quantiles are calculated.
static ScalarQuantizer	ScalarQuantizer.fromVectors(FloatVectorValues floatVectorValues, float confidenceInterval, int totalVectorCount)	This will read the float vector values and calculate the quantiles.
(package private) static ScalarQuantizer	ScalarQuantizer.fromVectors(FloatVectorValues floatVectorValues, float confidenceInterval, int totalVectorCount, int quantizationSampleSize)

Methods in org.apache.lucene.util with parameters of type ScalarQuantizer

Modifier and Type	Method	Description
float	ScalarQuantizer.recalculateCorrectiveOffset(byte[] quantizedVector, ScalarQuantizer oldQuantizer, VectorSimilarityFunction similarityFunction)	Recalculate the old score corrective value given new current quantiles