Pith Number

pith:KZMRMG4T

pith:2016:KZMRMG4T4UDMIXYOJTCS46K2N7

not attested not anchored not stored refs pending

Distributed Generalized Cross-Validation for Divide-and-Conquer Kernel Ridge Regression and its Asymptotic Optimality

Ganggang Xu, Guang Cheng, Zuofeng Shang

arxiv:1612.05907 v2 · 2016-12-18 · stat.ML

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{KZMRMG4T4UDMIXYOJTCS46K2N7}

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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.

Receipt and verification

First computed	2026-05-17T23:53:44.579211Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

5659161b93e506c45f0e4cc52e795a6fc6d7bf29092d555d6e7d1f9f38cd7cb1

Aliases

arxiv: 1612.05907 · arxiv_version: 1612.05907v2 · doi: 10.48550/arxiv.1612.05907 · pith_short_12: KZMRMG4T4UDM · pith_short_16: KZMRMG4T4UDMIXYO · pith_short_8: KZMRMG4T

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/KZMRMG4T4UDMIXYOJTCS46K2N7 \
  | 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: 5659161b93e506c45f0e4cc52e795a6fc6d7bf29092d555d6e7d1f9f38cd7cb1

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "373b3c44bc91d3a3ddd650d20963ce3698f2f94bc3092176bc524d41cd103d8b",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "stat.ML",
    "submitted_at": "2016-12-18T12:41:08Z",
    "title_canon_sha256": "2f4ff85d95830a0f848a02b1743e39d3c618e7845e6a104a5bab1bf2aaf29106"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1612.05907",
    "kind": "arxiv",
    "version": 2
  }
}