Pith Number

pith:BL7GGNL7

pith:2008:BL7GGNL7LJJZSLFV4XSA3XG7YE

not attested not anchored not stored refs pending

Client-server multi-task learning from distributed datasets

Francesco Dinuzzo, Gianluigi Pillonetto, Giuseppe De Nicolao

arxiv:0812.4235 v2 · 2008-12-22 · cs.LG · cs.AI

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{BL7GGNL7LJJZSLFV4XSA3XG7YE}

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	2026-05-18T03:19:35.731641Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

0afe63357f5a53992cb5e5e40ddcdfc11fb44226486f44ad6c9112ae3c6ee7fb

Aliases

arxiv: 0812.4235 · arxiv_version: 0812.4235v2 · doi: 10.48550/arxiv.0812.4235 · pith_short_12: BL7GGNL7LJJZ · pith_short_16: BL7GGNL7LJJZSLFV · pith_short_8: BL7GGNL7

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/BL7GGNL7LJJZSLFV4XSA3XG7YE \
  | 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: 0afe63357f5a53992cb5e5e40ddcdfc11fb44226486f44ad6c9112ae3c6ee7fb

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "48ffe8faed3229b1ebc85fbd6b9c2e8b1a11744e042a5d6d6b5b1f0eb8e6f54e",
    "cross_cats_sorted": [
      "cs.AI"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.LG",
    "submitted_at": "2008-12-22T16:34:39Z",
    "title_canon_sha256": "88c2a8c9e6005643f360f0582e1b9691982e5cb06153e04192388ebb93c6bcbf"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0812.4235",
    "kind": "arxiv",
    "version": 2
  }
}