🔎 FAISS IVF+PQ vs Flat

Benchmark approximate search vs brute force on synthetic vectors.

N (database vectors)

10000 500000

Nq (query vectors)

50 2000

d (dimension)

16 256

Top-k

1 50

Metric

cosine l2

IVF nlist (clusters)

64 8192

IVF nprobe (clusters/search)

1 128

PQ m (subquantizers)

4 64

PQ nbits (bits per subspace)

4 12

Random seed

0 10000

Results

Status