Pith Number

pith:PBDU7TBU

pith:2012:PBDU7TBUJA4JJ3UCCDNHMIX3L6

not attested not anchored not stored refs pending

Identifiability and Unmixing of Latent Parse Trees

Daniel Hsu, Percy Liang, Sham M. Kakade

arxiv:1206.3137 v1 · 2012-06-14 · 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{PBDU7TBUJA4JJ3UCCDNHMIX3L6}

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	2026-05-18T03:53:32.580708Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

78474fcc34483894ee8210da7622fb5f89bc30525b8b626996e5e99923f81231

Aliases

arxiv: 1206.3137 · arxiv_version: 1206.3137v1 · doi: 10.48550/arxiv.1206.3137 · pith_short_12: PBDU7TBUJA4J · pith_short_16: PBDU7TBUJA4JJ3UC · pith_short_8: PBDU7TBU

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/PBDU7TBUJA4JJ3UCCDNHMIX3L6 \
  | 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: 78474fcc34483894ee8210da7622fb5f89bc30525b8b626996e5e99923f81231

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "cd85bfa477ca7df699abaddd5936017133847b75c13cca619119a569d23006ef",
    "cross_cats_sorted": [
      "cs.LG"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "stat.ML",
    "submitted_at": "2012-06-14T15:21:24Z",
    "title_canon_sha256": "b63bb3e44909566f65b359cf5d5498f37abf385666af70f711c2c38a830f5534"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1206.3137",
    "kind": "arxiv",
    "version": 1
  }
}