Pith Number

pith:TPR6HP2I

pith:2009:TPR6HP2ISRHEMWSMNO5H3HIKXQ

not attested not anchored not stored refs pending

Online EM Algorithm for Hidden Markov Models

Olivier Capp\'e (LTCI)

arxiv:0908.2359 v2 · 2009-08-17 · stat.CO · 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{TPR6HP2ISRHEMWSMNO5H3HIKXQ}

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	2026-05-18T04:28:45.837531Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

9be3e3bf48944e465a4c6bba7d9d0abc23ffe06e802c29d848c7bdc86045c0c5

Aliases

arxiv: 0908.2359 · arxiv_version: 0908.2359v2 · doi: 10.48550/arxiv.0908.2359 · pith_short_12: TPR6HP2ISRHE · pith_short_16: TPR6HP2ISRHEMWSM · pith_short_8: TPR6HP2I

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/TPR6HP2ISRHEMWSMNO5H3HIKXQ \
  | 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: 9be3e3bf48944e465a4c6bba7d9d0abc23ffe06e802c29d848c7bdc86045c0c5

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "2d3ae2a611e104902c85dad159217151477a1c1e561fe8ee76cb616ce5abc869",
    "cross_cats_sorted": [
      "stat.ML"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "stat.CO",
    "submitted_at": "2009-08-17T14:24:32Z",
    "title_canon_sha256": "04f731e235b0dad9a8c95b875ccb8722f38ccdef2eec113d02d9235c778ff984"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0908.2359",
    "kind": "arxiv",
    "version": 2
  }
}