Pith Number

pith:2ZTLAVKQ

pith:2010:2ZTLAVKQZNURW3BOIR3XHXFET4

not attested not anchored not stored refs pending

Switching between Hidden Markov Models using Fixed Share

Tim van Erven, Wouter M. Koolen

arxiv:1008.4532 v1 · 2010-08-26 · 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{2ZTLAVKQZNURW3BOIR3XHXFET4}

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	2026-05-18T04:41:45.162520Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d666b05550cb691b6c2e447773dca49f2a893847340cfd6823952f4a8cd7dce6

Aliases

arxiv: 1008.4532 · arxiv_version: 1008.4532v1 · doi: 10.48550/arxiv.1008.4532 · pith_short_12: 2ZTLAVKQZNUR · pith_short_16: 2ZTLAVKQZNURW3BO · pith_short_8: 2ZTLAVKQ

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/2ZTLAVKQZNURW3BOIR3XHXFET4 \
  | 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: d666b05550cb691b6c2e447773dca49f2a893847340cfd6823952f4a8cd7dce6

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "bdcce1fe739fcc3ce013bf770996d300bbaf302ec94b2735ccee63b23cfc1dd7",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.LG",
    "submitted_at": "2010-08-26T15:36:22Z",
    "title_canon_sha256": "b06d3cc9c6c55fc915606ee57201c2722ebb64fe9c720aba29adff1d34485e92"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1008.4532",
    "kind": "arxiv",
    "version": 1
  }
}