Struct F16Quantizer 

pub struct F16Quantizer { /* private fields */ }

Half-precision (f16) quantizer.

Each f32 dimension is stored as f16 (2 bytes), giving 2x compression. Uses SIMD-accelerated conversion and fused distance when available.

Implementations

impl F16Quantizer

pub fn new(dim: usize) -> Self

Create a new F16 quantizer for vectors of the given dimension.

pub fn dim(&self) -> usize

Get the vector dimension.

pub fn save(&self, path: &str) -> Result<(), DiskAnnError>

Save to file.

pub fn load(path: &str) -> Result<Self, DiskAnnError>

Load from file.

pub fn stats(&self) -> SQStats

Get stats.

Trait Implementations

impl Clone for F16Quantizer

fn clone(&self) -> F16Quantizer

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for F16Quantizer

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for F16Quantizer

fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Serialize for F16Quantizer

fn serialize<__S>(&self, __serializer: __S) -> Result<__S::Ok, __S::Error>

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl VectorQuantizer for F16Quantizer

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

Encode a float vector into compressed bytes.

fn decode(&self, codes: &[u8]) -> Vec<f32>

Decode compressed bytes back to an approximate float vector.

fn asymmetric_distance(&self, query: &[f32], codes: &[u8]) -> f32

Compute asymmetric distance: exact query vs quantized database vector.

fn compression_ratio(&self, dim: usize) -> f32

Compression ratio for a given dimension (original bytes / compressed bytes).