Pith Number

pith:YDBDDAFT

pith:2018:YDBDDAFTQQWLHHLRGOBFJSHBH4

not attested not anchored not stored refs pending

COPA: Constrained PARAFAC2 for Sparse & Large Datasets

Ardavan Afshar, Elizabeth Searles, Evangelos E. Papalexakis, Ioakeim Perros, Jimeng Sun, Joyce Ho

arxiv:1803.04572 v2 · 2018-03-12 · 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{YDBDDAFTQQWLHHLRGOBFJSHBH4}

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	2026-05-18T00:07:10.433342Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

c0c23180b3842cb39d71338254c8e13f1f2d138b8bf93a6f27a01221e2be3711

Aliases

arxiv: 1803.04572 · arxiv_version: 1803.04572v2 · doi: 10.48550/arxiv.1803.04572 · pith_short_12: YDBDDAFTQQWL · pith_short_16: YDBDDAFTQQWLHHLR · pith_short_8: YDBDDAFT

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/YDBDDAFTQQWLHHLRGOBFJSHBH4 \
  | 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: c0c23180b3842cb39d71338254c8e13f1f2d138b8bf93a6f27a01221e2be3711

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "979cd1bb14f49d8b8088d7f240ac1340d23eed75aaf1c2acde7efcc1b06f1afb",
    "cross_cats_sorted": [
      "stat.ML"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.LG",
    "submitted_at": "2018-03-12T23:27:06Z",
    "title_canon_sha256": "a1611269824b786dc41d4b2af461aa4ae7085c63caa8f2bdb48d8d7daf9cded8"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1803.04572",
    "kind": "arxiv",
    "version": 2
  }
}