Struct BpsBuilder 

pub struct BpsBuilder<'a> { /* private fields */ }

Builder for BPS sketches

Implementations

impl<'a> BpsBuilder<'a>

pub fn new(config: &'a BpsConfig, rotated_vectors: &'a [Vec<f32>]) -> Self

Create a new BPS builder

pub fn build(&self) -> (Vec<u8>, Vec<BpsQParam>)

Build BPS data in SoA layout with quantization parameters Layout: [(block * num_proj + proj) * n_vec + vec] Returns: (bps_data, qparams per slot)

pub fn compute_query_sketch_with_params( config: &BpsConfig, rotated_query: &[f32], qparams: &[BpsQParam], ) -> Vec<u8>

Compute query sketch using stored quantization parameters

pub fn compute_query_sketch( config: &BpsConfig, rotated_query: &[f32], ) -> Vec<u8>

👎Deprecated since 0.5.0:

use compute_query_sketch_with_params() — symmetric quantization mismatches index qparams

Legacy: Compute query sketch without stored params (for backwards compat)

DEPRECATED: This function uses symmetric quantization which does NOT match the asymmetric quantization used when building the index. The mismatch inflates L1 distances and degrades recall. Use compute_query_sketch_with_params() instead, passing the BpsQParams stored during index build.