Pith Number

pith:O4TOJZKF

pith:2010:O4TOJZKFHDQ4D2RSWIGE3TXVGW

not attested not anchored not stored refs pending

Safe Feature Elimination for the LASSO and Sparse Supervised Learning Problems

Laurent El Ghaoui, Tarek Rabbani, Vivian Viallon

arxiv:1009.4219 v2 · 2010-09-21 · cs.LG · cs.SY · math.OC

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{O4TOJZKFHDQ4D2RSWIGE3TXVGW}

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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.

Cited by

1 paper in Pith

Online Sparse Regression with Expanding Observables

Receipt and verification

First computed	2026-05-18T04:21:52.967473Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

7726e4e54538e1c1ea32b20c4dcef535b5f0f57a0b16ec61de73ae06ac827205

Aliases

arxiv: 1009.4219 · arxiv_version: 1009.4219v2 · doi: 10.48550/arxiv.1009.4219 · pith_short_12: O4TOJZKFHDQ4 · pith_short_16: O4TOJZKFHDQ4D2RS · pith_short_8: O4TOJZKF

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/O4TOJZKFHDQ4D2RSWIGE3TXVGW \
  | 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: 7726e4e54538e1c1ea32b20c4dcef535b5f0f57a0b16ec61de73ae06ac827205

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "edc375b735d771dc1670b61529f130a4affd5292423eceaf506129735e59d3d9",
    "cross_cats_sorted": [
      "cs.SY",
      "math.OC"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.LG",
    "submitted_at": "2010-09-21T21:13:15Z",
    "title_canon_sha256": "43e0f0d836c74aa50cd0fe61010025fdccb51ad213f11fe803b23fced9f56e39"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1009.4219",
    "kind": "arxiv",
    "version": 2
  }
}