# Uses of Package
org.apache.lucene.util.hnsw

Packages that use org.apache.lucene.util.hnsw
Package
Description
org.apache.lucene.codecs.hnsw
HNSW vector helper classes.
org.apache.lucene.codecs.lucene99
Lucene 9.9 file format.
org.apache.lucene.search
Code to search indices.
org.apache.lucene.search.knn
Classes related to vector search: knn and vector fields.
org.apache.lucene.util.hnsw
Navigable Small-World graph, nominally Hierarchical but currently only has a single layer.

Classes in org.apache.lucene.util.hnsw used by org.apache.lucene.codecs.hnsw
Class
Description
CloseableRandomVectorScorerSupplier
A supplier that creates `RandomVectorScorer` from an ordinal.
HnswGraph
Hierarchical Navigable Small World graph.
RandomVectorScorer
A `RandomVectorScorer` for scoring random nodes in batches against an abstract query.
RandomVectorScorerSupplier
A supplier that creates `RandomVectorScorer` from an ordinal.
Classes in org.apache.lucene.util.hnsw used by org.apache.lucene.codecs.lucene99
Class
Description
CloseableRandomVectorScorerSupplier
A supplier that creates `RandomVectorScorer` from an ordinal.
HnswGraph
Hierarchical Navigable Small World graph.
RandomVectorScorer
A `RandomVectorScorer` for scoring random nodes in batches against an abstract query.
RandomVectorScorerSupplier
A supplier that creates `RandomVectorScorer` from an ordinal.
Classes in org.apache.lucene.util.hnsw used by org.apache.lucene.search
Class
Description
NeighborQueue
NeighborQueue uses a `LongHeap` to store lists of arcs in an HNSW graph, represented as a neighbor node id with an associated score packed together as a sortable long, which is sorted primarily by score.
Classes in org.apache.lucene.util.hnsw used by org.apache.lucene.search.knn
Class
Description
BlockingFloatHeap
A blocking bounded min heap that stores floats.
Classes in org.apache.lucene.util.hnsw used by org.apache.lucene.util.hnsw
Class
Description
HnswBuilder
Interface for builder building the `OnHeapHnswGraph`
HnswGraph
Hierarchical Navigable Small World graph.
HnswGraph.NodesIterator
Iterator over the graph nodes on a certain level.
HnswGraphBuilder
Builder for HNSW graph.
HnswGraphBuilder.GraphBuilderKnnCollector
A restricted, specialized knnCollector that can be used when building a graph.
HnswGraphMerger
Abstraction of merging multiple graphs into one on-heap graph
HnswGraphSearcher
Searches an HNSW graph to find nearest neighbors to a query vector.
IncrementalHnswGraphMerger
This selects the biggest Hnsw graph from the provided merge state and initializes a new HnswGraphBuilder with that graph as a starting point.
InitializedHnswGraphBuilder
This creates a graph builder that is initialized with the provided HnswGraph.
IntToIntFunction
Native int to int function
NeighborArray
NeighborArray encodes the neighbors of a node and their mutual scores in the HNSW graph as a pair of growable arrays.
NeighborQueue
NeighborQueue uses a `LongHeap` to store lists of arcs in an HNSW graph, represented as a neighbor node id with an associated score packed together as a sortable long, which is sorted primarily by score.
OnHeapHnswGraph
An `HnswGraph` where all nodes and connections are held in memory.
RandomVectorScorer
A `RandomVectorScorer` for scoring random nodes in batches against an abstract query.
RandomVectorScorerSupplier
A supplier that creates `RandomVectorScorer` from an ordinal.