Pith Number

pith:HSIG2JHW

pith:2021:HSIG2JHW6QMDSCT657RFMQJ7XU

not attested not anchored not stored refs pending

Modeling Item Response Theory with Stochastic Variational Inference

Benjamin W. Domingue, Chris Piech, Mike Wu, Noah Goodman, Richard L. Davis

arxiv:2108.11579 v2 · 2021-08-26 · 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{HSIG2JHW6QMDSCT657RFMQJ7XU}

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	2026-07-05T04:44:18.466397Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

3c906d24f6f418390a7eefe256413fbd2ade8a66f1d89485914a17723711b0a4

Aliases

arxiv: 2108.11579 · arxiv_version: 2108.11579v2 · doi: 10.48550/arxiv.2108.11579 · pith_short_12: HSIG2JHW6QMD · pith_short_16: HSIG2JHW6QMDSCT6 · pith_short_8: HSIG2JHW

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/HSIG2JHW6QMDSCT657RFMQJ7XU \
  | 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: 3c906d24f6f418390a7eefe256413fbd2ade8a66f1d89485914a17723711b0a4

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "dc2a783752b44e25b0a7a83078d37f89ce11d54723fb258de905483b9573732d",
    "cross_cats_sorted": [
      "stat.ML"
    ],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "cs.LG",
    "submitted_at": "2021-08-26T05:00:27Z",
    "title_canon_sha256": "3622252bd250e8da134aa7df1115756d5f17d6273ecc1c1d2418c0e7a0340a1c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2108.11579",
    "kind": "arxiv",
    "version": 2
  }
}