PerfTuned

This page is to collect a list of places where we're doing native-code optimization of LensKit code, so we can audit what's actually happening there and consider improved strategies.

Algorithms

• Item-item model build (Numba parallel + MKL or SciPy sparse ops)
• Item-item scoring
• ALS model build (Numba parallel + BLAS-level NumPy ops
• FunkSVD model build
• User-user scoring
• BPR sampling

Helpers

• CSR matrix support
• key-value heap (for item-item, maybe top-N)