Pith Number

pith:BH4BU2KF

pith:2015:BH4BU2KFYZKOLJCS7UMFKZZAIM

not attested not anchored not stored refs pending

A Dictionary Learning Approach for Factorial Gaussian Models

Johannes Traa, Noah Stein, Paris Smaragdis, Y. Cem Subakan

arxiv:1508.04486 v1 · 2015-08-18 · cs.LG · 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{BH4BU2KFYZKOLJCS7UMFKZZAIM}

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	2026-05-18T01:35:02.681761Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

09f81a6945c654e5a452fd18556720433c70734bf21edbf987fed5ec7b65b869

Aliases

arxiv: 1508.04486 · arxiv_version: 1508.04486v1 · doi: 10.48550/arxiv.1508.04486 · pith_short_12: BH4BU2KFYZKO · pith_short_16: BH4BU2KFYZKOLJCS · pith_short_8: BH4BU2KF

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/BH4BU2KFYZKOLJCS7UMFKZZAIM \
  | 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: 09f81a6945c654e5a452fd18556720433c70734bf21edbf987fed5ec7b65b869

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "7921474a5e733dbee9ba6c0cdb8ecb7d19ddc51316392313169d9f7f7fce3f56",
    "cross_cats_sorted": [
      "stat.ML"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.LG",
    "submitted_at": "2015-08-18T23:47:28Z",
    "title_canon_sha256": "1d0c0840d0bfb3dd56d8f2f954add481810943844f92cb50d5ebf1e189a679ea"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1508.04486",
    "kind": "arxiv",
    "version": 1
  }
}