Pith Number

pith:HDFZGSEH

pith:2010:HDFZGSEHYDANGA3XYFJK2YUYZL

not attested not anchored not stored refs pending

Additive Non-negative Matrix Factorization for Missing Data

Mithun Das Gupta

arxiv:1007.0380 v1 · 2010-07-01 · cs.NA · cs.LG · cs.NA

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{HDFZGSEHYDANGA3XYFJK2YUYZL}

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	2026-06-03T23:06:39.062049Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

38cb934887c0c0d30377c152ad6298cae4b59321c3ae99d21379b52a131ae7f3

Aliases

arxiv: 1007.0380 · arxiv_version: 1007.0380v1 · doi: 10.48550/arxiv.1007.0380 · pith_short_12: HDFZGSEHYDAN · pith_short_16: HDFZGSEHYDANGA3X · pith_short_8: HDFZGSEH

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/HDFZGSEHYDANGA3XYFJK2YUYZL \
  | 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: 38cb934887c0c0d30377c152ad6298cae4b59321c3ae99d21379b52a131ae7f3

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "633ee13e4c5332a6dd2fc0b6719a5dc4f35ab3a7150df3fb31d7b88b1ec5a9d5",
    "cross_cats_sorted": [
      "cs.LG",
      "cs.NA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.NA",
    "submitted_at": "2010-07-01T17:40:01Z",
    "title_canon_sha256": "3609868b0e788067168af63aa7de4d202a964688912ff9296fae0bd1a2298f27"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1007.0380",
    "kind": "arxiv",
    "version": 1
  }
}