Pith Number

pith:WQCJKI26

pith:2015:WQCJKI266RCYPEXCDCQBOG5N6B

not attested not anchored not stored refs pending

Two-stage Sampling, Prediction and Adaptive Regression via Correlation Screening (SPARCS)

Alfred Hero, Bala Rajaratnam, Hamed Firouzi

arxiv:1502.06189 v2 · 2015-02-22 · stat.ML · cs.LG

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{WQCJKI266RCYPEXCDCQBOG5N6B}

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	2026-05-18T00:57:50.974218Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b40495235ef4458792e218a0171badf06b0bee9ab72e0c6495c6a4f8a8ad71e4

Aliases

arxiv: 1502.06189 · arxiv_version: 1502.06189v2 · doi: 10.48550/arxiv.1502.06189 · pith_short_12: WQCJKI266RCY · pith_short_16: WQCJKI266RCYPEXC · pith_short_8: WQCJKI26

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/WQCJKI266RCYPEXCDCQBOG5N6B \
  | 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: b40495235ef4458792e218a0171badf06b0bee9ab72e0c6495c6a4f8a8ad71e4

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "fef131ace744af20ed14ca72bb396f2dfe47cb68bebd8c696d4416aa234dd5e1",
    "cross_cats_sorted": [
      "cs.LG"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "stat.ML",
    "submitted_at": "2015-02-22T06:44:18Z",
    "title_canon_sha256": "857842b9a2f239ee4f20703959c5b6036804d543f4df89f0ee1673fe67cc035a"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1502.06189",
    "kind": "arxiv",
    "version": 2
  }
}