Pith Number

pith:2P7QDMVI

pith:2019:2P7QDMVI55HJK3IT6YYONAT5DV

not attested not anchored not stored refs pending

Multiple imputation and selection of ordinal level 2 predictors in multilevel models. An analysis of the relationship between student ratings and teacher beliefs and practices

Carla Rampichini, Leonardo Grilli, Maria Francesca Marino, Omar Paccagnella

arxiv:1904.05062 v2 · 2019-04-10 · stat.AP

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{2P7QDMVI55HJK3IT6YYONAT5DV}

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	2026-05-17T23:48:41.540829Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d3ff01b2a8ef4e956d13f630e6827d1d466b89d98babc1f391658ed95c80df2e

Aliases

arxiv: 1904.05062 · arxiv_version: 1904.05062v2 · doi: 10.48550/arxiv.1904.05062 · pith_short_12: 2P7QDMVI55HJ · pith_short_16: 2P7QDMVI55HJK3IT · pith_short_8: 2P7QDMVI

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/2P7QDMVI55HJK3IT6YYONAT5DV \
  | 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: d3ff01b2a8ef4e956d13f630e6827d1d466b89d98babc1f391658ed95c80df2e

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "3e54705dc86409832a238ab9f087dd55bd98f27a02b87d676b8ecc024e4effd5",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "stat.AP",
    "submitted_at": "2019-04-10T08:37:33Z",
    "title_canon_sha256": "2d06fbf8e2012dde3cb23b16170a8c4b9c7c73d1b0bbcc465fca586051abbb0e"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1904.05062",
    "kind": "arxiv",
    "version": 2
  }
}