Struct BinaryRerank 

pub struct BinaryRerank { /* private fields */ }

Object-safe RerankCodec wrapper around BinaryCodec.

Binary has no learned parameters. All instances with the same dim are equivalent. train() is the default no-op.

Implementations

impl BinaryRerank

pub fn new(dim: usize) -> Self

Create a binary rerank codec for vectors of length dim.

Trait Implementations

impl RerankCodec for BinaryRerank

fn encode(&self, v: &[f32]) -> Result<Vec<u8>, RerankError>

Encode a full-precision vector to binary sign bits.

The serialized form is the raw UnifiedQuantizedVector buffer (as_bytes()): 32-byte QuantHeader followed by ceil(dim/8) bytes of packed sign bits.

fn prepare_query(&self, q: &[f32]) -> Result<PreparedQuery, RerankError>

Prepare the query for repeated distance calls.

Binary encodes both the query and candidates to sign bits and computes Hamming distance. The prepared form is PreparedQuery::Bytes holding the packed query bits.

fn distance_prepared( &self, prepared: &PreparedQuery, encoded: &[u8], ) -> Result<f32, RerankError>

Compute Hamming distance from a prepared query to a binary-encoded candidate.

fn to_bytes(&self) -> Result<Vec<u8>, RerankError>

Serialize binary codec state.

Format: [NDBIN\0 (6 bytes)][version: u8 = 1][dim: u32 LE (4 bytes)] — 11 bytes total. dim is stored so rerank_codec_from_bytes can reconstruct a stateless BinaryRerank.

fn name(&self) -> CodecName

Identity tag for mismatch detection.

fn train(&mut self, _samples: &[&[f32]]) -> Result<(), RerankError>

Train from a sample of vectors. Default no-op for codecs that don’t need training (e.g. Binary). Specific codec impls override this when needed.