Pith Number

pith:TAMZLRYJ

pith:2015:TAMZLRYJJTQL47D5RD2YRP6R3F

not attested not anchored not stored refs pending

Progressive EM for Latent Tree Models and Hierarchical Topic Detection

Leonard K.M. Poon, Nevin L. Zhang, Peixian Chen, Zhourong Chen

arxiv:1508.00973 v1 · 2015-08-05 · cs.LG · cs.CL · cs.IR · 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{TAMZLRYJJTQL47D5RD2YRP6R3F}

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	2026-05-18T01:35:44.381102Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

981995c7094ce0be7c7d88f588bfd1d947f5df4e4ec68d7abc56384fcf1525ab

Aliases

arxiv: 1508.00973 · arxiv_version: 1508.00973v1 · doi: 10.48550/arxiv.1508.00973 · pith_short_12: TAMZLRYJJTQL · pith_short_16: TAMZLRYJJTQL47D5 · pith_short_8: TAMZLRYJ

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/TAMZLRYJJTQL47D5RD2YRP6R3F \
  | 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: 981995c7094ce0be7c7d88f588bfd1d947f5df4e4ec68d7abc56384fcf1525ab

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "6d3c9a53ef593fa860354a3a09d0b788b95bb970e68be9354384aff5b99c107b",
    "cross_cats_sorted": [
      "cs.CL",
      "cs.IR",
      "stat.ML"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.LG",
    "submitted_at": "2015-08-05T05:00:32Z",
    "title_canon_sha256": "13a3dc180d11c718a5484132f22425b659247a25f6e5e6577f791e8c67afa8eb"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1508.00973",
    "kind": "arxiv",
    "version": 1
  }
}