Module org.apache.lucene.core
Class Lucene99ScalarQuantizedVectorsWriter.QuantizedFloatVectorValues
java.lang.Object
org.apache.lucene.search.DocIdSetIterator
org.apache.lucene.util.quantization.QuantizedByteVectorValues
org.apache.lucene.codecs.lucene99.Lucene99ScalarQuantizedVectorsWriter.QuantizedFloatVectorValues
- Enclosing class:
Lucene99ScalarQuantizedVectorsWriter
static class Lucene99ScalarQuantizedVectorsWriter.QuantizedFloatVectorValues
extends QuantizedByteVectorValues
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Field Summary
FieldsModifier and TypeFieldDescriptionprivate float
private final byte[]
private final ScalarQuantizer
private final FloatVectorValues
private final VectorSimilarityFunction
Fields inherited from class org.apache.lucene.search.DocIdSetIterator
NO_MORE_DOCS
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Constructor Summary
ConstructorsConstructorDescriptionQuantizedFloatVectorValues
(FloatVectorValues values, VectorSimilarityFunction vectorSimilarityFunction, ScalarQuantizer quantizer) -
Method Summary
Modifier and TypeMethodDescriptionint
advance
(int target) Advances to the first beyond the current whose document number is greater than or equal to target, and returns the document number itself.int
Return the dimension of the vectorsint
docID()
Returns the following:-1
ifDocIdSetIterator.nextDoc()
orDocIdSetIterator.advance(int)
were not called yet.float
int
nextDoc()
Advances to the next document in the set and returns the doc it is currently on, orDocIdSetIterator.NO_MORE_DOCS
if there are no more docs in the set.
NOTE: after the iterator has exhausted you should not call this method, as it may result in unpredicted behavior.private void
quantize()
scorer
(float[] target) Return aVectorScorer
for the given query vector.int
size()
Return the number of vectors for this field.byte[]
Methods inherited from class org.apache.lucene.util.quantization.QuantizedByteVectorValues
cost
Methods inherited from class org.apache.lucene.search.DocIdSetIterator
all, empty, range, slowAdvance
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Field Details
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values
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quantizer
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quantizedVector
private final byte[] quantizedVector -
offsetValue
private float offsetValue -
vectorSimilarityFunction
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Constructor Details
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QuantizedFloatVectorValues
public QuantizedFloatVectorValues(FloatVectorValues values, VectorSimilarityFunction vectorSimilarityFunction, ScalarQuantizer quantizer)
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Method Details
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getScoreCorrectionConstant
public float getScoreCorrectionConstant()- Specified by:
getScoreCorrectionConstant
in classQuantizedByteVectorValues
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dimension
public int dimension()Description copied from class:QuantizedByteVectorValues
Return the dimension of the vectors- Specified by:
dimension
in classQuantizedByteVectorValues
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size
public int size()Description copied from class:QuantizedByteVectorValues
Return the number of vectors for this field.- Specified by:
size
in classQuantizedByteVectorValues
- Returns:
- the number of vectors returned by this iterator
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vectorValue
- Specified by:
vectorValue
in classQuantizedByteVectorValues
- Throws:
IOException
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docID
public int docID()Description copied from class:DocIdSetIterator
Returns the following:-1
ifDocIdSetIterator.nextDoc()
orDocIdSetIterator.advance(int)
were not called yet.DocIdSetIterator.NO_MORE_DOCS
if the iterator has exhausted.- Otherwise it should return the doc ID it is currently on.
- Specified by:
docID
in classDocIdSetIterator
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nextDoc
Description copied from class:DocIdSetIterator
Advances to the next document in the set and returns the doc it is currently on, orDocIdSetIterator.NO_MORE_DOCS
if there are no more docs in the set.
NOTE: after the iterator has exhausted you should not call this method, as it may result in unpredicted behavior.- Specified by:
nextDoc
in classDocIdSetIterator
- Throws:
IOException
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advance
Description copied from class:DocIdSetIterator
Advances to the first beyond the current whose document number is greater than or equal to target, and returns the document number itself. Exhausts the iterator and returnsDocIdSetIterator.NO_MORE_DOCS
if target is greater than the highest document number in the set.The behavior of this method is undefined when called with
target ≤ current
, or after the iterator has exhausted. Both cases may result in unpredicted behavior.When
target > current
it behaves as if written:int advance(int target) { int doc; while ((doc = nextDoc()) < target) { } return doc; }
Some implementations are considerably more efficient than that.NOTE: this method may be called with
DocIdSetIterator.NO_MORE_DOCS
for efficiency by some Scorers. If your implementation cannot efficiently determine that it should exhaust, it is recommended that you check for that value in each call to this method.- Specified by:
advance
in classDocIdSetIterator
- Throws:
IOException
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scorer
Description copied from class:QuantizedByteVectorValues
Return aVectorScorer
for the given query vector.- Specified by:
scorer
in classQuantizedByteVectorValues
- Parameters:
target
- the query vector- Returns:
- a
VectorScorer
instance or null - Throws:
IOException
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quantize
- Throws:
IOException
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