Pith Number

pith:UKQZ56FU

pith:2021:UKQZ56FUDTMHEAF3T3SUYCDB2A

not attested not anchored not stored refs pending

Exact and Approximate Hierarchical Clustering Using A*

Amr Ahmed, Andrew McCallum, Avinava Dubey, Craig S. Greenberg, Kyle Cranmer, Manzil Zaheer, Nicholas Monath, Patrick Flaherty, Sebastian Macaluso

arxiv:2104.07061 v1 · 2021-04-14 · cs.LG · cs.DS · physics.data-an · stat.ML

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{UKQZ56FUDTMHEAF3T3SUYCDB2A}

Prints a linked badge after your title and injects PDF metadata. Compiles on arXiv. Learn more · Embed verified badge

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.

Receipt and verification

First computed	2026-07-05T02:32:17.348164Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a2a19ef8b41cd87200bb9ee54c0861d02691f24c37f7b9cbda21b70793522a5e

Aliases

arxiv: 2104.07061 · arxiv_version: 2104.07061v1 · doi: 10.48550/arxiv.2104.07061 · pith_short_12: UKQZ56FUDTMH · pith_short_16: UKQZ56FUDTMHEAF3 · pith_short_8: UKQZ56FU

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/UKQZ56FUDTMHEAF3T3SUYCDB2A \
  | 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: a2a19ef8b41cd87200bb9ee54c0861d02691f24c37f7b9cbda21b70793522a5e

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "54e2151e6034f514e72c52e734648ff6ca543a4ba4b905136ac3401d76ff8a5c",
    "cross_cats_sorted": [
      "cs.DS",
      "physics.data-an",
      "stat.ML"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.LG",
    "submitted_at": "2021-04-14T18:15:27Z",
    "title_canon_sha256": "57f0ba5613c27deba36622969fdd599d439e22ee8d05acb0dce3b755e867c052"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2104.07061",
    "kind": "arxiv",
    "version": 1
  }
}