Pith Number

pith:WAF5VC5G

pith:2018:WAF5VC5GKPA6AFPS535SUWGGJ5

not attested not anchored not stored refs pending

Statistically and Computationally Efficient Variance Estimator for Kernel Ridge Regression

Guang Cheng, Jean Honorio, Meimei Liu

arxiv:1809.06019 v1 · 2018-09-17 · math.ST · cs.LG · stat.ML · stat.TH

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{WAF5VC5GKPA6AFPS535SUWGGJ5}

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	2026-05-18T00:05:35.850438Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b00bda8ba653c1e015f2eefb2a58c64f6665ac11d5d916de9dc25816e2778499

Aliases

arxiv: 1809.06019 · arxiv_version: 1809.06019v1 · doi: 10.48550/arxiv.1809.06019 · pith_short_12: WAF5VC5GKPA6 · pith_short_16: WAF5VC5GKPA6AFPS · pith_short_8: WAF5VC5G

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/WAF5VC5GKPA6AFPS535SUWGGJ5 \
  | 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: b00bda8ba653c1e015f2eefb2a58c64f6665ac11d5d916de9dc25816e2778499

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "2976baca15e6dc7d35d088514ac35d4cea081349d3b133f0448803d0c403f34e",
    "cross_cats_sorted": [
      "cs.LG",
      "stat.ML",
      "stat.TH"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.ST",
    "submitted_at": "2018-09-17T04:53:46Z",
    "title_canon_sha256": "c92cae34a6e3b5ec4f59ba0ecb24a3d195a54b92116a8f1b85704fbe07475312"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1809.06019",
    "kind": "arxiv",
    "version": 1
  }
}