FAISS IVF: Slow, misses neighbors? nlist/nprobe for speed/recall

FAISS IVF with nlist and nprobe: understand the knobs that control speed vs recall in approximate nearest neighbor search.
See exactly how nlist sets list count and nprobe controls scanned buckets, why that changes latency/recall, and how to pick sensible defaults you can tune later.
We build an exact IndexFlatL2 baseline, an IVF-Flat index, measure batch recall, and demo a practical tuning workflow in Python with NumPy and FAISS—subscribe for more IR tutorials.
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Видео FAISS IVF: Slow, misses neighbors? nlist/nprobe for speed/recall канала Professor Py: Information Retrieval with Python