Pith Number

pith:SCYZEU4G

pith:2019:SCYZEU4GK64DNHBEGBFPZ7YRMG

not attested not anchored not stored refs pending

$\beta^3$-IRT: A New Item Response Model and its Applications

Peter Flach, Ricardo B. C. Prud\^encio, Telmo Silva Filho, Tom Diethe, Yu Chen

arxiv:1903.04016 v3 · 2019-03-10 · 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{SCYZEU4GK64DNHBEGBFPZ7YRMG}

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	2026-05-17T23:44:29.049725Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

90b192538657b8369c24304afcff1161ad8e509323b9ce1eb2e4b2480ec0df93

Aliases

arxiv: 1903.04016 · arxiv_version: 1903.04016v3 · doi: 10.48550/arxiv.1903.04016 · pith_short_12: SCYZEU4GK64D · pith_short_16: SCYZEU4GK64DNHBE · pith_short_8: SCYZEU4G

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/SCYZEU4GK64DNHBEGBFPZ7YRMG \
  | 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: 90b192538657b8369c24304afcff1161ad8e509323b9ce1eb2e4b2480ec0df93

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "8c6470066404383a4bb090199e4993934922c0ca433856a368d1fa2b6d5edefa",
    "cross_cats_sorted": [
      "cs.LG"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "stat.ML",
    "submitted_at": "2019-03-10T16:06:50Z",
    "title_canon_sha256": "88939b33ff512adb86a18d19588f4b82cb787fbd2d345de90586c28b00ecbec0"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1903.04016",
    "kind": "arxiv",
    "version": 3
  }
}