# Uses of Class
org.apache.lucene.codecs.hnsw.FlatVectorsFormat

Packages that use FlatVectorsFormat
Package
Description
org.apache.lucene.codecs.lucene102
Lucene 10.2 file format.
org.apache.lucene.codecs.lucene99
Lucene 9.9 file format.

- ## Uses of FlatVectorsFormat in org.apache.lucene.codecs.lucene102

  Subclasses of FlatVectorsFormat in org.apache.lucene.codecs.lucene102
  Modifier and Type
  Class
  Description
  `class`
  `Lucene102BinaryQuantizedVectorsFormat`
  The binary quantization format used here is a per-vector optimized scalar quantization.

- ## Uses of FlatVectorsFormat in org.apache.lucene.codecs.lucene99

  Subclasses of FlatVectorsFormat in org.apache.lucene.codecs.lucene99
  Modifier and Type
  Class
  Description
  `final class`
  `Lucene99FlatVectorsFormat`
  Lucene 9.9 flat vector format, which encodes numeric vector values
  `class`
  `Lucene99ScalarQuantizedVectorsFormat`
  Format supporting vector quantization, storage, and retrieval