Pith Number

pith:ORCWDXY2

pith:2025:ORCWDXY2Q2WHEO7PXEPSUPMDTN

not attested not anchored not stored refs pending

SAPPHIRE: Preconditioned Stochastic Variance Reduction for Faster Large-Scale Statistical Learning

Jingruo Sun, Madeleine Udell, Zachary Frangella

arxiv:2501.15941 v1 · 2025-01-27 · 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{ORCWDXY2Q2WHEO7PXEPSUPMDTN}

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	2026-07-05T10:05:52.452770Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

744561df1a86ac723befb91f2a3d839b5ee14991ceb92669ba536940b19340ab

Aliases

arxiv: 2501.15941 · arxiv_version: 2501.15941v1 · doi: 10.48550/arxiv.2501.15941 · pith_short_12: ORCWDXY2Q2WH · pith_short_16: ORCWDXY2Q2WHEO7P · pith_short_8: ORCWDXY2

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/ORCWDXY2Q2WHEO7PXEPSUPMDTN \
  | 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: 744561df1a86ac723befb91f2a3d839b5ee14991ceb92669ba536940b19340ab

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "fe38875f115055723b4c53b86e6fe56daefe22f35f9e3adc0e199f476f1193b5",
    "cross_cats_sorted": [
      "cs.LG"
    ],
    "license": "http://creativecommons.org/licenses/by-nc-sa/4.0/",
    "primary_cat": "stat.ML",
    "submitted_at": "2025-01-27T10:36:45Z",
    "title_canon_sha256": "c223a4a06d6ba7454126777cf1fd464f476adaa935540cd94808f432b2f0b710"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2501.15941",
    "kind": "arxiv",
    "version": 1
  }
}