Pith Number

pith:7A2Z3C2P

pith:2013:7A2Z3C2P5VIT77J2TGUTTAIYGC

not attested not anchored not stored refs pending

Weakly supervised clustering: Learning fine-grained signals from coarse labels

Alexander Blocker, Niall Cardin, Stefan Wager

arxiv:1310.1363 v3 · 2013-10-04 · stat.ML · cs.LG

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{7A2Z3C2P5VIT77J2TGUTTAIYGC}

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	2026-05-18T01:33:07.030379Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

f8359d8b4fed513ffd3a99a93981183097f6007f804b98d7707dda2816c98f19

Aliases

arxiv: 1310.1363 · arxiv_version: 1310.1363v3 · doi: 10.48550/arxiv.1310.1363 · pith_short_12: 7A2Z3C2P5VIT · pith_short_16: 7A2Z3C2P5VIT77J2 · pith_short_8: 7A2Z3C2P

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/7A2Z3C2P5VIT77J2TGUTTAIYGC \
  | 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: f8359d8b4fed513ffd3a99a93981183097f6007f804b98d7707dda2816c98f19

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d7eabfba1b849347c707ede0f45ed322dfd506fe02b1a1e2629ae5455aaea32b",
    "cross_cats_sorted": [
      "cs.LG"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "stat.ML",
    "submitted_at": "2013-10-04T18:34:54Z",
    "title_canon_sha256": "7182ea4a1479e5c0b54c37ee045791ebbbb890f98117d1bbd0845e799844ccae"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1310.1363",
    "kind": "arxiv",
    "version": 3
  }
}