rvf-quant

Temperature-tiered vector quantization for RuVector Format.

Overview

rvf-quant provides quantization codecs that reduce vector storage size based on access temperature:

• f32 -- full precision for hot vectors
• f16 -- half precision for warm vectors
• u8 -- scalar quantization for cool vectors
• binary -- 1-bit quantization for cold/archive vectors
• RaBitQ -- randomized 1-bit codes (32x code compression) with unbiased distance estimation, used by the runtime's opt-in two-stage query path (recall@10 0.972 after exact rescore at 100k x 64-dim, Windows x64 criterion release)
• Automatic tiering -- promote/demote vectors based on access patterns

Usage

[dependencies]

rvf-quant = "0.2"

Breaking Changes in 0.2.0

• decode_sketch_seg now returns Result instead of panicking on malformed input (crafted-file DoS hardening).

Features

• std (default) -- enable std support
• simd -- enable SIMD-accelerated quantization

License

MIT OR Apache-2.0