Pith Number

pith:PJA4JFR7

pith:2012:PJA4JFR75DICHRFCDE553IL2LM

not attested not anchored not stored refs pending

Non-parametric shrinkage mean estimation for quadratic loss functions with unknown covariance matrices

Baiqi Miao, Cheng Wang, Longbing Cao, Tiejun Tong

arxiv:1211.1456 v4 · 2012-11-07 · stat.ME

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{PJA4JFR75DICHRFCDE553IL2LM}

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	2026-05-18T02:38:30.037276Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

7a41c4963fe8d023c4a2193bdda17a5b066d89a7e32a632c58bed2963d07be0c

Aliases

arxiv: 1211.1456 · arxiv_version: 1211.1456v4 · doi: 10.48550/arxiv.1211.1456 · pith_short_12: PJA4JFR75DIC · pith_short_16: PJA4JFR75DICHRFC · pith_short_8: PJA4JFR7

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/PJA4JFR75DICHRFCDE553IL2LM \
  | 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: 7a41c4963fe8d023c4a2193bdda17a5b066d89a7e32a632c58bed2963d07be0c

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "391e72e8d67c429e3e29facc98bb5b0e4748aa61f48460165e871866809859fd",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "stat.ME",
    "submitted_at": "2012-11-07T05:35:37Z",
    "title_canon_sha256": "3f66541009cf250979d6f94787fd45d8d7b37dab2a4fc826abbd9a1374bfbda3"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1211.1456",
    "kind": "arxiv",
    "version": 4
  }
}