Pith Number

pith:YQECANQJ

pith:2026:YQECANQJPDNQQY55IBGXIVWEYD

not attested not anchored not stored refs pending

TabClustPFN: A Prior-Fitted Network for Tabular Data Clustering

Guanyang Wang, Qiong Zhang, Tianqi Zhao, Yan Shuo Tan

TabClustPFN clusters any new tabular dataset in one forward pass by amortizing Bayesian inference over assignments and cluster count.

arxiv:2601.21656 v3 · 2026-01-29 · cs.LG

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\usepackage{pith}
\pithnumber{YQECANQJPDNQQY55IBGXIVWEYD}

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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

TabClustPFN clusters unseen datasets in a single forward pass, without dataset-specific retraining or hyperparameter tuning, and outperforms classical, deep, and amortized clustering baselines on synthetic and real-world tabular benchmarks.

C2weakest assumption

The synthetic datasets drawn from the flexible clustering prior sufficiently resemble the structure and heterogeneity of real-world tabular data so that the pretrained network generalizes without retraining.

C3one line summary

TabClustPFN performs amortized Bayesian inference for cluster assignments and cardinality on unseen tabular data after pretraining on synthetic data from a flexible prior.

Receipt and verification

First computed	2026-05-17T23:39:16.532043Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

c40820360978db0863bd404d7456c4c0e7ea3a9b1f784bde4f589a642ac46093

Aliases

arxiv: 2601.21656 · arxiv_version: 2601.21656v3 · doi: 10.48550/arxiv.2601.21656 · pith_short_12: YQECANQJPDNQ · pith_short_16: YQECANQJPDNQQY55 · pith_short_8: YQECANQJ

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/YQECANQJPDNQQY55IBGXIVWEYD \
  | 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: c40820360978db0863bd404d7456c4c0e7ea3a9b1f784bde4f589a642ac46093

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "52237989bfe2f9d02b9c67c7377f89fba6d3ce6b1b437e61a8cef3cc7d241419",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "cs.LG",
    "submitted_at": "2026-01-29T12:56:41Z",
    "title_canon_sha256": "1034c67585577229f33c36ca2e3318c2d6b6db96de232b13a1fd0d1331b5ed06"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2601.21656",
    "kind": "arxiv",
    "version": 3
  }
}