Pith Number

pith:XR7C56TG

pith:2016:XR7C56TGXFP6WMNLFKKNEYY3E4

not attested not anchored not stored refs pending

Excess Optimism: How Biased is the Apparent Error of an Estimator Tuned by SURE?

Ryan J. Tibshirani, Saharon Rosset

arxiv:1612.09415 v2 · 2016-12-30 · math.ST · stat.TH

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

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	2026-05-18T00:52:49.084680Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

bc7e2efa66b95feb31ab2a94d2631b271456ce6f3a3a2bbcec3a8895661e7a44

Aliases

arxiv: 1612.09415 · arxiv_version: 1612.09415v2 · doi: 10.48550/arxiv.1612.09415 · pith_short_12: XR7C56TGXFP6 · pith_short_16: XR7C56TGXFP6WMNL · pith_short_8: XR7C56TG

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/XR7C56TGXFP6WMNLFKKNEYY3E4 \
  | 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: bc7e2efa66b95feb31ab2a94d2631b271456ce6f3a3a2bbcec3a8895661e7a44

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "30d0b1e348f112db0cab54b81df7efda69cfea36b24b2d60d219e7be77b70c09",
    "cross_cats_sorted": [
      "stat.TH"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.ST",
    "submitted_at": "2016-12-30T08:07:51Z",
    "title_canon_sha256": "d77d8f8618f1502323f9bcbdf03b4d7538505f38d64078b589912a1594f7e7ee"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1612.09415",
    "kind": "arxiv",
    "version": 2
  }
}