Pith Number

pith:K6FVXIKV

pith:2015:K6FVXIKVWGLX33JNZJ3OPUFPLL

not attested not anchored not stored refs pending

Decoding Hidden Markov Models Faster Than Viterbi Via Online Matrix-Vector (max, +)-Multiplication

Gabriele Farina, Massimo Cairo, Romeo Rizzi

arxiv:1512.00077 v2 · 2015-11-30 · cs.LG · cs.DS · cs.IT · math.IT

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{K6FVXIKVWGLX33JNZJ3OPUFPLL}

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	2026-05-18T01:24:32.539120Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

578b5ba155b1977ded2dca76e7d0af5af19edd0e54f20680e4e345f33ad7f8ef

Aliases

arxiv: 1512.00077 · arxiv_version: 1512.00077v2 · doi: 10.48550/arxiv.1512.00077 · pith_short_12: K6FVXIKVWGLX · pith_short_16: K6FVXIKVWGLX33JN · pith_short_8: K6FVXIKV

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/K6FVXIKVWGLX33JNZJ3OPUFPLL \
  | 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: 578b5ba155b1977ded2dca76e7d0af5af19edd0e54f20680e4e345f33ad7f8ef

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d53726dc545d6160c73b7724225d725d62a9f83e04c7650427e3c9eeb4242c7e",
    "cross_cats_sorted": [
      "cs.DS",
      "cs.IT",
      "math.IT"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.LG",
    "submitted_at": "2015-11-30T22:38:07Z",
    "title_canon_sha256": "38319867d30da6585f95fa2a5732ef53f17ee2b5d13d6a815ef3a6e227a8a0d6"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1512.00077",
    "kind": "arxiv",
    "version": 2
  }
}