Pith Number

pith:XZKAZ6N7

pith:2019:XZKAZ6N74J4RC4AL7XJDN3NIPK

not attested not anchored not stored refs pending

Online Convex Matrix Factorization with Representative Regions

Abhishek Agarwal, Jianhao Peng, Olgica Milenkovic

arxiv:1904.02580 v2 · 2019-04-04 · cs.LG · 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{XZKAZ6N74J4RC4AL7XJDN3NIPK}

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	2026-05-17T23:44:47.320926Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

be540cf9bfe27911700bfdd236eda87a8d9073bfa1e5ebda3761b67a0c7fa3a5

Aliases

arxiv: 1904.02580 · arxiv_version: 1904.02580v2 · doi: 10.48550/arxiv.1904.02580 · pith_short_12: XZKAZ6N74J4R · pith_short_16: XZKAZ6N74J4RC4AL · pith_short_8: XZKAZ6N7

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/XZKAZ6N74J4RC4AL7XJDN3NIPK \
  | 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: be540cf9bfe27911700bfdd236eda87a8d9073bfa1e5ebda3761b67a0c7fa3a5

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b66ab85d1dd2753661a442da923034c0aeb4a462f866f3ccd9e41b62d9ee5c43",
    "cross_cats_sorted": [
      "stat.ML"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.LG",
    "submitted_at": "2019-04-04T14:32:19Z",
    "title_canon_sha256": "d9e955056f0de7cf4621480183234fcd9414611f2a296d810eb932fd42c29c19"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1904.02580",
    "kind": "arxiv",
    "version": 2
  }
}