Pith Number

pith:MJQ5V2TY

pith:2012:MJQ5V2TYFMDGA2KCM4UVHVMERC

not attested not anchored not stored refs pending

Structure estimation for discrete graphical models: Generalized covariance matrices and their inverses

Martin J. Wainwright, Po-Ling Loh

arxiv:1212.0478 v2 · 2012-12-03 · stat.ML · math.ST · stat.TH

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{MJQ5V2TYFMDGA2KCM4UVHVMERC}

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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.

Receipt and verification

First computed	2026-05-18T03:03:21.201003Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

6261daea782b06606942672953d5848898379eee5dabd1085796b772ff91be36

Aliases

arxiv: 1212.0478 · arxiv_version: 1212.0478v2 · doi: 10.48550/arxiv.1212.0478 · pith_short_12: MJQ5V2TYFMDG · pith_short_16: MJQ5V2TYFMDGA2KC · pith_short_8: MJQ5V2TY

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/MJQ5V2TYFMDGA2KCM4UVHVMERC \
  | 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: 6261daea782b06606942672953d5848898379eee5dabd1085796b772ff91be36

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f4c480c35f00f58fa72e9b740cd0c38b994d1ef23c434de74fd2ea72570ada43",
    "cross_cats_sorted": [
      "math.ST",
      "stat.TH"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "stat.ML",
    "submitted_at": "2012-12-03T18:20:35Z",
    "title_canon_sha256": "831ee765d2a4ce9c12b6f32dbe832c69318556fc3a044f9ce3b9ea0e9b3a87cd"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1212.0478",
    "kind": "arxiv",
    "version": 2
  }
}