Pith Number

pith:SJ4EB2V5

pith:2016:SJ4EB2V5PIIMCHK25FPZCTK3JC

not attested not anchored not stored refs pending

Back to the Basics: Bayesian extensions of IRT outperform neural networks for proficiency estimation

Bojian Han, Chaitanya Ekanadham, Kevin H. Wilson, Yan Karklin

arxiv:1604.02336 v2 · 2016-04-08 · cs.AI · 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{SJ4EB2V5PIIMCHK25FPZCTK3JC}

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	2026-05-18T01:14:12.393880Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

927840eabd7a10c11d5ae95f914d5b489e5accd912d33707b3fd54997fd413e8

Aliases

arxiv: 1604.02336 · arxiv_version: 1604.02336v2 · doi: 10.48550/arxiv.1604.02336 · pith_short_12: SJ4EB2V5PIIM · pith_short_16: SJ4EB2V5PIIMCHK2 · pith_short_8: SJ4EB2V5

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/SJ4EB2V5PIIMCHK25FPZCTK3JC \
  | 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: 927840eabd7a10c11d5ae95f914d5b489e5accd912d33707b3fd54997fd413e8

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ba8ea189b889ba14907de4959cf40a2410330b1e14a5b23c6a68a436c4728241",
    "cross_cats_sorted": [
      "cs.LG"
    ],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "cs.AI",
    "submitted_at": "2016-04-08T12:54:18Z",
    "title_canon_sha256": "734db8293e590acabdf7a33d899badf3d248170f4c490c8fe3dd254ce4f1b5d6"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1604.02336",
    "kind": "arxiv",
    "version": 2
  }
}