Class Lucene99HnswScalarQuantizedVectorsFormat

    • Constructor Detail

      • Lucene99HnswScalarQuantizedVectorsFormat

        public Lucene99HnswScalarQuantizedVectorsFormat()
        Constructs a format using default graph construction parameters
      • Lucene99HnswScalarQuantizedVectorsFormat

        public Lucene99HnswScalarQuantizedVectorsFormat​(int maxConn,
                                                        int beamWidth)
        Constructs a format using the given graph construction parameters.
        Parameters:
        maxConn - the maximum number of connections to a node in the HNSW graph
        beamWidth - the size of the queue maintained during graph construction.
      • Lucene99HnswScalarQuantizedVectorsFormat

        public Lucene99HnswScalarQuantizedVectorsFormat​(int maxConn,
                                                        int beamWidth,
                                                        int numMergeWorkers,
                                                        java.lang.Float confidenceInterval,
                                                        java.util.concurrent.ExecutorService mergeExec)
        Constructs a format using the given graph construction parameters and scalar quantization.
        Parameters:
        maxConn - the maximum number of connections to a node in the HNSW graph
        beamWidth - the size of the queue maintained during graph construction.
        numMergeWorkers - number of workers (threads) that will be used when doing merge. If larger than 1, a non-null ExecutorService must be passed as mergeExec
        confidenceInterval - the confidenceInterval for scalar quantizing the vectors, when `null` it is calculated based on the vector field dimensions.
        mergeExec - the ExecutorService that will be used by ALL vector writers that are generated by this format to do the merge