Pith Number

pith:IWUU4IYK

pith:2015:IWUU4IYKN5QT4LLTOBWTHGJJ3T

not attested not anchored not stored refs pending

Exact Hybrid Covariance Thresholding for Joint Graphical Lasso

Chao Yang, Jian Peng, Jinbo Xu, Qingming Tang

arxiv:1503.02128 v2 · 2015-03-07 · cs.LG · cs.AI · 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{IWUU4IYKN5QT4LLTOBWTHGJJ3T}

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	2026-05-18T01:44:11.260828Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

45a94e230a6f613e2d73706d339929dce0fc1f87e98c37ff97125ae1d305c5dc

Aliases

arxiv: 1503.02128 · arxiv_version: 1503.02128v2 · doi: 10.48550/arxiv.1503.02128 · pith_short_12: IWUU4IYKN5QT · pith_short_16: IWUU4IYKN5QT4LLT · pith_short_8: IWUU4IYK

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/IWUU4IYKN5QT4LLTOBWTHGJJ3T \
  | 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: 45a94e230a6f613e2d73706d339929dce0fc1f87e98c37ff97125ae1d305c5dc

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "9c734924315bb4633902fc7c1821a684c478803aad4bdec4d332f028ca361b34",
    "cross_cats_sorted": [
      "cs.AI",
      "stat.ML"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.LG",
    "submitted_at": "2015-03-07T03:34:48Z",
    "title_canon_sha256": "84d6b833dfbf3424b32112f9612849297a802782a27c894c4f6d05f40eb7583e"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1503.02128",
    "kind": "arxiv",
    "version": 2
  }
}