Pith Number

pith:HWGQFLBN

pith:2026:HWGQFLBN273CPKSDZF2DDEYGUB

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BBC: Improving Large-k Approximate Nearest Neighbor Search with a Bucket-based Result Collector

Bin Cui, Gao Cong, Jinwei Zhu, Kai Zeng, Ziqi Yin

A bucket-based collector organizes ANN candidates by distance to speed up large-k queries in quantization indexes by up to 3.8 times.

arxiv:2604.01960 v3 · 2026-04-02 · cs.DB · cs.DS

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\usepackage{pith}
\pithnumber{HWGQFLBN273CPKSDZF2DDEYGUB}

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Record completeness

1 Bitcoin timestamp

2 Internet Archive

3 Author claim open · sign in to claim

4 Citations open

5 Replications open

✓ Portable graph bundle live · download bundle · merged state

The bundle contains the canonical record plus signed events. A mirror can host it anywhere and recompute the same current state with the deterministic merge algorithm.

Claims

C1strongest claim

BBC accelerates existing quantization-based ANN methods by up to 3.8x at recall@k = 0.95 for large-k ANN queries.

C2weakest assumption

That organizing candidates into distance-based buckets reduces ranking costs and cache misses enough to offset any overhead, and that the two tailored re-ranking algorithms accelerate re-ranking across different quantization methods without harming accuracy.

C3one line summary

BBC improves large-k ANN efficiency via bucketed candidate buffers and optimized re-ranking, delivering up to 3.8x speedup at recall@k=0.95.

Formal links

2 machine-checked theorem links

Cited by

1 paper in Pith

BBC: Improving Large-k Approximate Nearest Neighbor Search with a Bucket-based Result Collector

Receipt and verification

First computed	2026-06-03T01:05:12.435297Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

3d8d02ac2dd7f627aa43c974319306a05afc69ae19fec5df9608662f9bc63f8a

Aliases

arxiv: 2604.01960 · arxiv_version: 2604.01960v3 · doi: 10.48550/arxiv.2604.01960 · pith_short_12: HWGQFLBN273C · pith_short_16: HWGQFLBN273CPKSD · pith_short_8: HWGQFLBN

Agent API

Resolver JSON Graph JSON Events JSON Schema Signing key

Verify this Pith Number yourself

curl -sH 'Accept: application/ld+json' https://pith.science/pith/HWGQFLBN273CPKSDZF2DDEYGUB \
  | jq -c '.canonical_record' \
  | python3 -c "import sys,json,hashlib; b=json.dumps(json.loads(sys.stdin.read()), sort_keys=True, separators=(',',':'), ensure_ascii=False).encode(); print(hashlib.sha256(b).hexdigest())"
# expect: 3d8d02ac2dd7f627aa43c974319306a05afc69ae19fec5df9608662f9bc63f8a

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "9833e17833692bf0d9b2f0e01c5d7c410e2610b587677ef7a07ac6b6f53216ae",
    "cross_cats_sorted": [
      "cs.DS"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.DB",
    "submitted_at": "2026-04-02T12:22:38Z",
    "title_canon_sha256": "60bab5b969a9b1453a4475c9b077b702d588c19ffa20fc516e462ff9be81bf86"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2604.01960",
    "kind": "arxiv",
    "version": 3
  }
}