Pith Number

pith:OLZJKE56

pith:2011:OLZJKE56TRDK2EO6CLEYUMJHUN

not attested not anchored not stored refs pending

Optimal Algorithms for Ridge and Lasso Regression with Partially Observed Attributes

Elad Hazan, Tomer Koren

arxiv:1108.4559 v2 · 2011-08-23 · 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{OLZJKE56TRDK2EO6CLEYUMJHUN}

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	2026-05-18T02:21:37.105721Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

72f29513be9c46ad11de12c98a3127a37c5306b07b3d73adac04afa9291a8d4f

Aliases

arxiv: 1108.4559 · arxiv_version: 1108.4559v2 · doi: 10.48550/arxiv.1108.4559 · pith_short_12: OLZJKE56TRDK · pith_short_16: OLZJKE56TRDK2EO6 · pith_short_8: OLZJKE56

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/OLZJKE56TRDK2EO6CLEYUMJHUN \
  | 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: 72f29513be9c46ad11de12c98a3127a37c5306b07b3d73adac04afa9291a8d4f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "7b454c23e5d767795e43ad856d56512d5f037f740edb9d1e7f550a5e5f265aff",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.LG",
    "submitted_at": "2011-08-23T11:52:35Z",
    "title_canon_sha256": "68b8494033c29d40ca9d919707918fa4821a2b2bed5c8dc3598de25e9e8dea0f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1108.4559",
    "kind": "arxiv",
    "version": 2
  }
}