Pith Number

pith:3UGY36XI

pith:2018:3UGY36XIUGTBMHXNIWJGEMF6VD

not attested not anchored not stored refs pending

The use of sampling weights in the M-quantile random-effects regression: an application to PISA mathematics scores

Antonella D'Agostino, Francesco Schirripa Spagnolo, Ides Nicaise, Nicola Salvati

arxiv:1802.08004 v1 · 2018-02-22 · math.ST · stat.TH

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Add to your LaTeX paper

\usepackage{pith}
\pithnumber{3UGY36XIUGTBMHXNIWJGEMF6VD}

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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	2026-05-18T00:22:45.862612Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

dd0d8dfae8a1a6161eed45926230bea8fd6c01b4999cf09b34417b4b5c273be3

Aliases

arxiv: 1802.08004 · arxiv_version: 1802.08004v1 · doi: 10.48550/arxiv.1802.08004 · pith_short_12: 3UGY36XIUGTB · pith_short_16: 3UGY36XIUGTBMHXN · pith_short_8: 3UGY36XI

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/3UGY36XIUGTBMHXNIWJGEMF6VD \
  | 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: dd0d8dfae8a1a6161eed45926230bea8fd6c01b4999cf09b34417b4b5c273be3

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "053d434ed1dd20121cbe7b1113590e406754e4e97502b259280f21211c07fc25",
    "cross_cats_sorted": [
      "stat.TH"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.ST",
    "submitted_at": "2018-02-22T12:12:46Z",
    "title_canon_sha256": "615fadb4363ef134269f2840131ab6a8730d12412eebd9ed8c2c6591da04fe8a"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1802.08004",
    "kind": "arxiv",
    "version": 1
  }
}