Pith Number

pith:QNB2KQ7Y

pith:2020:QNB2KQ7YBY4TMJMPBG4OGMVLKA

not attested not anchored not stored refs pending

Online nonnegative CP-dictionary learning for Markovian data

Christopher Strohmeier, Deanna Needell, Hanbaek Lyu

arxiv:2009.07612 v4 · 2020-09-16 · stat.ML · cs.LG · math.OC

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{QNB2KQ7YBY4TMJMPBG4OGMVLKA}

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	2026-07-05T04:11:04.321755Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

8343a543f80e3936258f09b8e332ab5036ca64e46eb2be1b91cac7200c9668d3

Aliases

arxiv: 2009.07612 · arxiv_version: 2009.07612v4 · doi: 10.48550/arxiv.2009.07612 · pith_short_12: QNB2KQ7YBY4T · pith_short_16: QNB2KQ7YBY4TMJMP · pith_short_8: QNB2KQ7Y

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/QNB2KQ7YBY4TMJMPBG4OGMVLKA \
  | 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: 8343a543f80e3936258f09b8e332ab5036ca64e46eb2be1b91cac7200c9668d3

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "60d229244b5f7cc5a2eff172542c04a37464f892dd3f2eab03e68eb35ac9c887",
    "cross_cats_sorted": [
      "cs.LG",
      "math.OC"
    ],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "stat.ML",
    "submitted_at": "2020-09-16T11:41:01Z",
    "title_canon_sha256": "26af7b132e50a38fac843f9b0cdcd7eaea3f1193509caa333a3c4f5dcaca9241"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2009.07612",
    "kind": "arxiv",
    "version": 4
  }
}