Pith Number

pith:H4GRES5D

pith:2017:H4GRES5DRSXSQOYLKIBPL2YKQ3

not attested not anchored not stored refs pending

An Efficient Algorithm for Non-Negative Matrix Factorization with Random Projections

Gabriele Torre, Michael Graber

arxiv:1712.02248 v1 · 2017-12-06 · cs.NA · cs.DM

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{H4GRES5DRSXSQOYLKIBPL2YKQ3}

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	2026-05-18T00:28:38.709452Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

3f0d124ba38caf283b0b5202f5eb0a86fa180ee5bde910501db133ea00ab6712

Aliases

arxiv: 1712.02248 · arxiv_version: 1712.02248v1 · doi: 10.48550/arxiv.1712.02248 · pith_short_12: H4GRES5DRSXS · pith_short_16: H4GRES5DRSXSQOYL · pith_short_8: H4GRES5D

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/H4GRES5DRSXSQOYLKIBPL2YKQ3 \
  | 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: 3f0d124ba38caf283b0b5202f5eb0a86fa180ee5bde910501db133ea00ab6712

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "51c62772ba1ee10f5d21feed2fd6fd593e1f9cba0496f2201dc66ac329b0b6dd",
    "cross_cats_sorted": [
      "cs.DM"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.NA",
    "submitted_at": "2017-12-06T15:56:21Z",
    "title_canon_sha256": "a86cce0c4ce0c2885832864d6924cbc4385548dc573d07dc698c6412065244c7"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1712.02248",
    "kind": "arxiv",
    "version": 1
  }
}