Pith Number

pith:3INULDNK

pith:2015:3INULDNKO4DI6PSDC3RTAN7GPN

not attested not anchored not stored refs pending

GAP Safe screening rules for sparse multi-task and multi-class models

Alexandre Gramfort, Eugene Ndiaye, Joseph Salmon, Olivier Fercoq

arxiv:1506.03736 v2 · 2015-06-11 · stat.ML · cs.LG · math.OC · stat.CO

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{3INULDNKO4DI6PSDC3RTAN7GPN}

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	2026-05-18T01:26:34.013420Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

da1b458daa77068f3e4316e33037e67b55746b98d99e2c210b82056cac64a5e8

Aliases

arxiv: 1506.03736 · arxiv_version: 1506.03736v2 · doi: 10.48550/arxiv.1506.03736 · pith_short_12: 3INULDNKO4DI · pith_short_16: 3INULDNKO4DI6PSD · pith_short_8: 3INULDNK

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/3INULDNKO4DI6PSDC3RTAN7GPN \
  | 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: da1b458daa77068f3e4316e33037e67b55746b98d99e2c210b82056cac64a5e8

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "3165307cfabef24b43eac604592c3748036a30f99842f4f6d00bb495574b20ba",
    "cross_cats_sorted": [
      "cs.LG",
      "math.OC",
      "stat.CO"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "stat.ML",
    "submitted_at": "2015-06-11T16:25:36Z",
    "title_canon_sha256": "9bcbc4961a6dc93ba9ea36a25b6c42ea662012f02c6be843e5233ffd55f6267f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1506.03736",
    "kind": "arxiv",
    "version": 2
  }
}