Pith Number

pith:QID27I76

pith:2022:QID27I76RMXZR77IZVLE5GT5TT

not attested not anchored not stored refs pending

The Power and Limitation of Pretraining-Finetuning for Linear Regression under Covariate Shift

Difan Zou, Jingfeng Wu, Quanquan Gu, Sham M. Kakade, Vladimir Braverman

arxiv:2208.01857 v1 · 2022-08-03 · cs.LG · math.OC · 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{QID27I76RMXZR77IZVLE5GT5TT}

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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	2026-07-05T04:45:50.408189Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

8207afa3fe8b2f98ffe8cd564e9a7d9cdba1a1697519756812abebe04f15fe1a

Aliases

arxiv: 2208.01857 · arxiv_version: 2208.01857v1 · doi: 10.48550/arxiv.2208.01857 · pith_short_12: QID27I76RMXZ · pith_short_16: QID27I76RMXZR77I · pith_short_8: QID27I76

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/QID27I76RMXZR77IZVLE5GT5TT \
  | 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: 8207afa3fe8b2f98ffe8cd564e9a7d9cdba1a1697519756812abebe04f15fe1a

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "12ec9cf3f8240733ffb884d7d70655844e173acd8bf9ba498d295d9715b17890",
    "cross_cats_sorted": [
      "math.OC",
      "stat.ML"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.LG",
    "submitted_at": "2022-08-03T05:59:49Z",
    "title_canon_sha256": "f9b3e6a4aefa5963c37158023649069c9fd7dd56da89a577bea5db37eae65a4e"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2208.01857",
    "kind": "arxiv",
    "version": 1
  }
}