Pith Number

pith:QA5A55CU

pith:2015:QA5A55CUOUKULWLIEYH3VOCG6Z

not attested not anchored not stored refs pending

Cross validation in LASSO and its acceleration

Tomoyuki Obuchi, Yoshiyuki Kabashima

arxiv:1601.00881 v2 · 2015-12-29 · cs.IT · cond-mat.dis-nn · cond-mat.stat-mech · math.IT

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{QA5A55CUOUKULWLIEYH3VOCG6Z}

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	2026-05-18T01:12:05.420893Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

803a0ef454751545d968260fbab846f660b0d6f38ce6dc98403e74892435ac92

Aliases

arxiv: 1601.00881 · arxiv_version: 1601.00881v2 · doi: 10.48550/arxiv.1601.00881 · pith_short_12: QA5A55CUOUKU · pith_short_16: QA5A55CUOUKULWLI · pith_short_8: QA5A55CU

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/QA5A55CUOUKULWLIEYH3VOCG6Z \
  | 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: 803a0ef454751545d968260fbab846f660b0d6f38ce6dc98403e74892435ac92

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "2172da93756526895a402485d3c74265e484d35125729d1efff625d27a6880c4",
    "cross_cats_sorted": [
      "cond-mat.dis-nn",
      "cond-mat.stat-mech",
      "math.IT"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.IT",
    "submitted_at": "2015-12-29T02:50:51Z",
    "title_canon_sha256": "5b7c8f780884a0b6c14b8bf1f3dce78f7a63d9194d5cc69ae8faa94e7fef7a93"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1601.00881",
    "kind": "arxiv",
    "version": 2
  }
}