Pith Number

pith:IAGAKAUF

pith:2017:IAGAKAUF6WVUBEVKAEX3BDSNEF

not attested not anchored not stored refs pending

From Fixed-X to Random-X Regression: Bias-Variance Decompositions, Covariance Penalties, and Prediction Error Estimation

Ryan J. Tibshirani, Saharon Rosset

arxiv:1704.08160 v2 · 2017-04-26 · stat.ME

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	2026-05-18T00:42:38.800161Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

400c050285f5ab4092aa012fb08e4d2174d3e3c7c9c6c825f1ebd22f48ff4192

Aliases

arxiv: 1704.08160 · arxiv_version: 1704.08160v2 · doi: 10.48550/arxiv.1704.08160 · pith_short_12: IAGAKAUF6WVU · pith_short_16: IAGAKAUF6WVUBEVK · pith_short_8: IAGAKAUF

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/IAGAKAUF6WVUBEVKAEX3BDSNEF \
  | 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: 400c050285f5ab4092aa012fb08e4d2174d3e3c7c9c6c825f1ebd22f48ff4192

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "0a50215b2cec72515c517cf9d6f8e4aca5ce9e18e58772d433b132000566457e",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "stat.ME",
    "submitted_at": "2017-04-26T15:22:54Z",
    "title_canon_sha256": "c89855121769445275e6213d26d51b941cb8a7d532edbe298bad7ddb63c8a6f1"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1704.08160",
    "kind": "arxiv",
    "version": 2
  }
}