Pith Number

pith:DAPHG2OT

pith:2013:DAPHG2OTU43QYM7ZDRIDIRKE6C

not attested not anchored not stored refs pending

Joint Topic Modeling and Factor Analysis of Textual Information and Graded Response Data

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

arxiv:1305.1956 v2 · 2013-05-08 · 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{DAPHG2OTU43QYM7ZDRIDIRKE6C}

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	2026-05-18T03:26:08.458710Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

181e7369d3a7370c33f91c50344544f091ba3942675f8423dd01eaec95f4ccd4

Aliases

arxiv: 1305.1956 · arxiv_version: 1305.1956v2 · doi: 10.48550/arxiv.1305.1956 · pith_short_12: DAPHG2OTU43Q · pith_short_16: DAPHG2OTU43QYM7Z · pith_short_8: DAPHG2OT

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/DAPHG2OTU43QYM7ZDRIDIRKE6C \
  | 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: 181e7369d3a7370c33f91c50344544f091ba3942675f8423dd01eaec95f4ccd4

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f0269d2f9f4254188b193700f156eef3c774f2020af6172bf12455ebff04ce6b",
    "cross_cats_sorted": [
      "cs.LG"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "stat.ML",
    "submitted_at": "2013-05-08T20:44:55Z",
    "title_canon_sha256": "15ad4711e138c368ab91faa3c465e745e26c5f9ff620b3ad9bb1324ff04f0dda"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1305.1956",
    "kind": "arxiv",
    "version": 2
  }
}