Package org.apache.lucene.util.hnsw
package org.apache.lucene.util.hnsw
Navigable Small-World graph, nominally Hierarchical but currently only has a single layer.
Provides efficient approximate nearest neighbor search for high dimensional vectors.
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ClassDescriptionA supplier that creates
RandomVectorScorer
from an ordinal.This merger merges graph in a concurrent manner, by usingHnswConcurrentMergeBuilder
Interface for builder building theOnHeapHnswGraph
A graph builder that manages multiple workers, it only supports adding the whole graph all at once.Hierarchical Navigable Small World graph.NodesIterator that accepts nodes as an integer array.Nodes iterator based on set representation of nodes.Iterator over the graph nodes on a certain level, Iterator also provides the size – the total number of nodes to be iterated over.Builder for HNSW graph.A restricted, specialized knnCollector that can be used when building a graph.Abstraction of merging multiple graphs into one on-heap graphSearches an HNSW graph to find nearest neighbors to a query vector.This selects the biggest Hnsw graph from the provided merge state and initializes a new HnswGraphBuilder with that graph as a starting point.This creates a graph builder that is initialized with the provided HnswGraph.Native int to int functionNeighborArray encodes the neighbors of a node and their mutual scores in the HNSW graph as a pair of growable arrays.NeighborQueue uses aLongHeap
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.AnHnswGraph
where all nodes and connections are held in memory.Wraps a provided KnnCollector object, translating the provided vectorId ordinal to a documentIdProvides random access to vectors by dense ordinal.ARandomVectorScorer
for scoring random nodes in batches against an abstract query.Creates a default scorer for random access vectors.A supplier that createsRandomVectorScorer
from an ordinal.RandomVectorScorerSupplier for bytes vectorRandomVectorScorerSupplier for Float vector