Pith Number

pith:SVGNDI4S

pith:2009:SVGNDI4SABMRIF7UUZ7L6HY3LH

not attested not anchored not stored refs pending

Efficient algorithms for training the parameters of hidden Markov models using stochastic expectation maximization EM training and Viterbi training

Irmtraud M. Meyer, Tin Yin Lam

arxiv:0909.0737 v2 · 2009-09-03 · q-bio.QM · cs.LG · q-bio.GN

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{SVGNDI4SABMRIF7UUZ7L6HY3LH}

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	2026-05-18T03:43:05.498687Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

954cd1a39200591417f4a67ebf1f1b59e4d8c9934dd4ead4ad683a711d929e89

Aliases

arxiv: 0909.0737 · arxiv_version: 0909.0737v2 · doi: 10.48550/arxiv.0909.0737 · pith_short_12: SVGNDI4SABMR · pith_short_16: SVGNDI4SABMRIF7U · pith_short_8: SVGNDI4S

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/SVGNDI4SABMRIF7UUZ7L6HY3LH \
  | 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: 954cd1a39200591417f4a67ebf1f1b59e4d8c9934dd4ead4ad683a711d929e89

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "a4c061f7138961279ca9b04cbd75c98d02ca91befdcb888104d0688c142a576d",
    "cross_cats_sorted": [
      "cs.LG",
      "q-bio.GN"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "q-bio.QM",
    "submitted_at": "2009-09-03T19:29:56Z",
    "title_canon_sha256": "177d6d004ef0dd65cc66020941fba107b6009c7290dded12eb9d565c79cc4e98"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0909.0737",
    "kind": "arxiv",
    "version": 2
  }
}