Pith Number

pith:AFUL6ZWR

pith:2015:AFUL6ZWRWGZ2WOHSNNSPYQYNDG

not attested not anchored not stored refs pending

Fast Differentially Private Matrix Factorization

Alexander J. Smola, Yu-Xiang Wang, Ziqi Liu

arxiv:1505.01419 v2 · 2015-05-06 · cs.LG · cs.AI

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{AFUL6ZWRWGZ2WOHSNNSPYQYNDG}

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	2026-05-18T02:16:48.681169Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

0168bf66d1b1b3ab38f26b64fc430d1991222c97faad3cf7090bb52ecaf247f9

Aliases

arxiv: 1505.01419 · arxiv_version: 1505.01419v2 · doi: 10.48550/arxiv.1505.01419 · pith_short_12: AFUL6ZWRWGZ2 · pith_short_16: AFUL6ZWRWGZ2WOHS · pith_short_8: AFUL6ZWR

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/AFUL6ZWRWGZ2WOHSNNSPYQYNDG \
  | 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: 0168bf66d1b1b3ab38f26b64fc430d1991222c97faad3cf7090bb52ecaf247f9

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d68b66df391111a11a9f0d0e8969d76e19e9f5262ae6773d3165aa371b703322",
    "cross_cats_sorted": [
      "cs.AI"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.LG",
    "submitted_at": "2015-05-06T16:18:06Z",
    "title_canon_sha256": "686b8824a9c2c69c6fe68907f890c0fd4f697d13386259230f1062b15c5c18f3"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1505.01419",
    "kind": "arxiv",
    "version": 2
  }
}