Pith Number

pith:O64JU5T2

pith:2014:O64JU5T2MTHOO47CZQUO3KB5YR

not attested not anchored not stored refs pending

Tag-Aware Ordinal Sparse Factor Analysis for Learning and Content Analytics

Andrew E. Waters, Andrew S. Lan, Christoph Studer, Richard G. Baraniuk

arxiv:1412.5967 v1 · 2014-12-18 · stat.ML · 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{O64JU5T2MTHOO47CZQUO3KB5YR}

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	2026-05-18T02:30:55.868868Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

77b89a767a64cee773e2cc28eda83dc45830a1fe3b3a4cba257a2d9297120fdc

Aliases

arxiv: 1412.5967 · arxiv_version: 1412.5967v1 · doi: 10.48550/arxiv.1412.5967 · pith_short_12: O64JU5T2MTHO · pith_short_16: O64JU5T2MTHOO47C · pith_short_8: O64JU5T2

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/O64JU5T2MTHOO47CZQUO3KB5YR \
  | 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: 77b89a767a64cee773e2cc28eda83dc45830a1fe3b3a4cba257a2d9297120fdc

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "4656c83277b8c17f625951349be20295a3cada684eae757b92d09cf8795b66a3",
    "cross_cats_sorted": [
      "cs.LG"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "stat.ML",
    "submitted_at": "2014-12-18T17:46:41Z",
    "title_canon_sha256": "307995f6112089d1d352466063ff0afd0c5172c40ee0ddb368ea53f0dc33b72c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1412.5967",
    "kind": "arxiv",
    "version": 1
  }
}