Pith Number

pith:PQLKZ32O

pith:2017:PQLKZ32OXAZMI5YVLT5UFZFYMG

not attested not anchored not stored refs pending

Accelerating Cross-Validation in Multinomial Logistic Regression with $\ell_1$-Regularization

Tomoyuki Obuchi, Yoshiyuki Kabashima

arxiv:1711.05420 v2 · 2017-11-15 · stat.ML · cond-mat.dis-nn

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{PQLKZ32OXAZMI5YVLT5UFZFYMG}

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	2026-05-18T00:05:32.503835Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

7c16acef4eb832c477155cfb42e4b861b5fdbb6253ad9a980fbb768bc6e217bf

Aliases

arxiv: 1711.05420 · arxiv_version: 1711.05420v2 · doi: 10.48550/arxiv.1711.05420 · pith_short_12: PQLKZ32OXAZM · pith_short_16: PQLKZ32OXAZMI5YV · pith_short_8: PQLKZ32O

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/PQLKZ32OXAZMI5YVLT5UFZFYMG \
  | 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: 7c16acef4eb832c477155cfb42e4b861b5fdbb6253ad9a980fbb768bc6e217bf

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "575916ae698b700c1df9e86f6b0ea52771ad3f54ca90fc3cf44a40c1f5334f00",
    "cross_cats_sorted": [
      "cond-mat.dis-nn"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "stat.ML",
    "submitted_at": "2017-11-15T06:02:30Z",
    "title_canon_sha256": "c27335c547fc703051702f2376b56a35f3f79d71f010c36800d2260bcf4f4dd8"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1711.05420",
    "kind": "arxiv",
    "version": 2
  }
}