Pith Number

pith:XJ2ST5NH

pith:2022:XJ2ST5NHIQVLRYUKWZ7RB45BUE

not attested not anchored not stored refs pending

UCTopic: Unsupervised Contrastive Learning for Phrase Representations and Topic Mining

Jiacheng Li, Jingbo Shang, Julian McAuley

arxiv:2202.13469 v1 · 2022-02-27 · cs.CL · cs.AI

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{XJ2ST5NHIQVLRYUKWZ7RB45BUE}

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.

Cited by

1 paper in Pith

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Receipt and verification

First computed	2026-07-05T04:00:30.001177Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

ba7529f5a7442ab8e28ab67f10f3a1a10f1f7bcc5150f7b9c87ce5df21744dd1

Aliases

arxiv: 2202.13469 · arxiv_version: 2202.13469v1 · doi: 10.48550/arxiv.2202.13469 · pith_short_12: XJ2ST5NHIQVL · pith_short_16: XJ2ST5NHIQVLRYUK · pith_short_8: XJ2ST5NH

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/XJ2ST5NHIQVLRYUKWZ7RB45BUE \
  | 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: ba7529f5a7442ab8e28ab67f10f3a1a10f1f7bcc5150f7b9c87ce5df21744dd1

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "32755a39c193f207155a40c92c3e05b176f26e3dcbbabe4fb88e1bec522ab295",
    "cross_cats_sorted": [
      "cs.AI"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CL",
    "submitted_at": "2022-02-27T22:43:06Z",
    "title_canon_sha256": "71a02e3208c13ddc07a105fcf350027a7221fbdf90a09376d777425222880e54"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2202.13469",
    "kind": "arxiv",
    "version": 1
  }
}