Pith Number

pith:RSZOM2K2

pith:2014:RSZOM2K2YBPT57KRN4MRF62PB7

not attested not anchored not stored refs pending

Expanded Alternating Optimization of Nonconvex Functions with Applications to Matrix Factorization and Penalized Regression

Mu Zhu, W. James Murdoch

arxiv:1412.4128 v1 · 2014-12-12 · stat.CO · 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{RSZOM2K2YBPT57KRN4MRF62PB7}

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	2026-05-18T02:31:20.128664Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

8cb2e6695ac05f3efd516f1912fb4f0ff5f0df2840eece04bce198102665bd39

Aliases

arxiv: 1412.4128 · arxiv_version: 1412.4128v1 · doi: 10.48550/arxiv.1412.4128 · pith_short_12: RSZOM2K2YBPT · pith_short_16: RSZOM2K2YBPT57KR · pith_short_8: RSZOM2K2

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/RSZOM2K2YBPT57KRN4MRF62PB7 \
  | 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: 8cb2e6695ac05f3efd516f1912fb4f0ff5f0df2840eece04bce198102665bd39

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "5e7e9456cf4065fe61d67a16e9eec3fc7532aeb18b3ce29ebf6ce4e9f0221459",
    "cross_cats_sorted": [
      "stat.ML"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "stat.CO",
    "submitted_at": "2014-12-12T21:04:15Z",
    "title_canon_sha256": "4651f4ae67f71aa5ed7125d554fa4072db1d22f25d54a0eb19b3cd4576cedaa6"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1412.4128",
    "kind": "arxiv",
    "version": 1
  }
}