Pith Number

pith:2UNVVBQR

pith:2021:2UNVVBQR7B4JUHWSKESQAFJCGE

not attested not anchored not stored refs pending

Personalized Federated Learning: A Unified Framework and Universal Optimization Techniques

Boxin Zhao, Filip Hanzely, Mladen Kolar

arxiv:2102.09743 v4 · 2021-02-19 · cs.LG

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{2UNVVBQR7B4JUHWSKESQAFJCGE}

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.

Cited by

1 paper in Pith

Tuning-Free Efficient Estimation for Multi-Source Data via Covariance-Aware Shrinkage

Receipt and verification

First computed	2026-07-05T06:14:21.997093Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d51b5a8611f8789a1ed2512500152231344c4849c4832863bd40a7929e17a215

Aliases

arxiv: 2102.09743 · arxiv_version: 2102.09743v4 · doi: 10.48550/arxiv.2102.09743 · pith_short_12: 2UNVVBQR7B4J · pith_short_16: 2UNVVBQR7B4JUHWS · pith_short_8: 2UNVVBQR

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/2UNVVBQR7B4JUHWSKESQAFJCGE \
  | 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: d51b5a8611f8789a1ed2512500152231344c4849c4832863bd40a7929e17a215

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "17ce90d60fba9b6eb9f17a466163fc367e9cc6b3a26af180c68abacd0339ee0f",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "cs.LG",
    "submitted_at": "2021-02-19T04:56:28Z",
    "title_canon_sha256": "c61b3d9892257c0dbec547e94205b84e75c009af7ceaa1c884a600ce71d3802c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2102.09743",
    "kind": "arxiv",
    "version": 4
  }
}