Pith Number

pith:UDYB6K6L

pith:2012:UDYB6K6LK46W3K4ZBRASEJRGAI

not attested not anchored not stored refs pending

A Max-Product EM Algorithm for Reconstructing Markov-tree Sparse Signals from Compressive Samples

Aleksandar Dogandzic, Zhao Song

arxiv:1209.1064 v4 · 2012-09-05 · stat.ML · 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{UDYB6K6LK46W3K4ZBRASEJRGAI}

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	2026-05-18T03:15:06.492435Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a0f01f2bcb573d6dab990c41222626020874a30d90c70d73a8be6c8c4bd0409a

Aliases

arxiv: 1209.1064 · arxiv_version: 1209.1064v4 · doi: 10.48550/arxiv.1209.1064 · pith_short_12: UDYB6K6LK46W · pith_short_16: UDYB6K6LK46W3K4Z · pith_short_8: UDYB6K6L

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/UDYB6K6LK46W3K4ZBRASEJRGAI \
  | 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: a0f01f2bcb573d6dab990c41222626020874a30d90c70d73a8be6c8c4bd0409a

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "290ff0b08acad2b3667f1cec5534e6c2649550a9639cf0b4c3261f6fadc36d0d",
    "cross_cats_sorted": [
      "cs.IT",
      "math.IT"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "stat.ML",
    "submitted_at": "2012-09-05T18:06:29Z",
    "title_canon_sha256": "58769880e741edb19c539592617c86473e8f9554c1be1d21e811b0969cb0e256"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1209.1064",
    "kind": "arxiv",
    "version": 4
  }
}