Pith Number

pith:FCI3HRRW

pith:2026:FCI3HRRW7IPUFKMXS3RAKFOUS2

not attested not anchored not stored refs resolved

Beyond Centralization: User-Controlled Federated Recommendations in Practice

Alejandro Bellogin, Manel Slokom

Users can control the balance between personalization and diversity in a federated recommender while keeping data private.

arxiv:2605.12527 v1 · 2026-04-10 · cs.IR · cs.HC

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\usepackage{pith}
\pithnumber{FCI3HRRW7IPUFKMXS3RAKFOUS2}

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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.

Claims

C1strongest claim

Our results show that user control, privacy, and effective personalization can be combined in a working system. We demonstrate a practical approach to interactive, privacy-preserving recommendation.

C2weakest assumption

The small number of participants (22) and limited duration (53 days) provide sufficient evidence for the general viability of user-controlled federated recommendations.

C3one line summary

A practical federated recommender allows user control over personalization versus diversity, with users showing preference for personalization in a live deployment.

References

50 extracted · 50 resolved · 0 Pith anchors

[1] Wohlin, C. and Runeson, P. and. 2012 , Keywords = 2012

[2] In: Proceedings of the ACM on Web Con- ference 2024, WWW 2024, Singapore, May 13-17 · doi:10.1145/3589334.3645702

[3] 2021 , isbn = 2021 · doi:10.1145/3412841.3442010

[4] 2012 , isbn = 2012

[5] Federated Recommendation Systems , year=

Formal links

2 machine-checked theorem links

Receipt and verification

First computed	2026-05-18T03:10:02.753457Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

2891b3c636fa1f42a99796e20515d4968c447c3dcb1e788d635aea3a0eb6efcf

Aliases

arxiv: 2605.12527 · arxiv_version: 2605.12527v1 · doi: 10.48550/arxiv.2605.12527 · pith_short_12: FCI3HRRW7IPU · pith_short_16: FCI3HRRW7IPUFKMX · pith_short_8: FCI3HRRW

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/FCI3HRRW7IPUFKMXS3RAKFOUS2 \
  | 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: 2891b3c636fa1f42a99796e20515d4968c447c3dcb1e788d635aea3a0eb6efcf

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "e1a1495e06a028ab0a150c0eae69e13f31d5143cb8472abec5fed3d19d9ffa97",
    "cross_cats_sorted": [
      "cs.HC"
    ],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "cs.IR",
    "submitted_at": "2026-04-10T19:12:48Z",
    "title_canon_sha256": "ec26630150ff07b30606b5eb03b72111abce73011a54397d7b0c6f5f0af9a0e2"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2605.12527",
    "kind": "arxiv",
    "version": 1
  }
}