Pith Number

pith:ERFRHGQG

pith:2019:ERFRHGQGTAEPLML7ZAOQESRZT3

not attested not anchored not stored refs pending

A Kalman filtering induced heuristic optimization based partitional data clustering

Arjun Pakrashi, Bidyut B. Chaudhuri

arxiv:1901.09082 v1 · 2019-01-25 · 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{ERFRHGQGTAEPLML7ZAOQESRZT3}

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	2026-05-17T23:55:30.565982Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

244b139a069808f5b17fc81d024a399ef2644791c239d1570cf095b43fe04f63

Aliases

arxiv: 1901.09082 · arxiv_version: 1901.09082v1 · doi: 10.48550/arxiv.1901.09082 · pith_short_12: ERFRHGQGTAEP · pith_short_16: ERFRHGQGTAEPLML7 · pith_short_8: ERFRHGQG

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/ERFRHGQGTAEPLML7ZAOQESRZT3 \
  | 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: 244b139a069808f5b17fc81d024a399ef2644791c239d1570cf095b43fe04f63

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "57c31c4bc0b5488b26f981306154c699e119c9b05af4de6beabb1f844447843b",
    "cross_cats_sorted": [
      "stat.ML"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.LG",
    "submitted_at": "2019-01-25T21:09:35Z",
    "title_canon_sha256": "4021e718e1199f6e66141f861d66bfa9b2ff325400ceb99ce6636559c0fccb64"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1901.09082",
    "kind": "arxiv",
    "version": 1
  }
}