Pith Number

pith:DNPESTJ7

pith:2011:DNPESTJ7TUL35P3UCSNFU7JWSR

not attested not anchored not stored refs pending

A Risk Comparison of Ordinary Least Squares vs Ridge Regression

Dean P. Foster, Lyle H. Ungar, Paramveer S. Dhillon, Sham M. Kakade

arxiv:1105.0875 v2 · 2011-05-04 · 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{DNPESTJ7TUL35P3UCSNFU7JWSR}

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	2026-05-18T03:22:08.251968Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

1b5e494d3f9d17bebf74149a5a7d36946b4b850f4fddfa91f964005a2390ab49

Aliases

arxiv: 1105.0875 · arxiv_version: 1105.0875v2 · doi: 10.48550/arxiv.1105.0875 · pith_short_12: DNPESTJ7TUL3 · pith_short_16: DNPESTJ7TUL35P3U · pith_short_8: DNPESTJ7

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/DNPESTJ7TUL35P3UCSNFU7JWSR \
  | 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: 1b5e494d3f9d17bebf74149a5a7d36946b4b850f4fddfa91f964005a2390ab49

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d889cc8196587aa3992d1694bc3a1b293a67d3c4b440e584ddf9ac20beb2decb",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "stat.ML",
    "submitted_at": "2011-05-04T17:25:52Z",
    "title_canon_sha256": "05d416240aeafc8e48f95325f63ebfacf0fc624b118517f8cbc6e3891bf592b5"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1105.0875",
    "kind": "arxiv",
    "version": 2
  }
}