{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2025:AVGHRTA2EOHFWGQGAXXTUFXSS6","merge_version":"pith-open-graph-merge-v1","event_count":2,"valid_event_count":2,"invalid_event_count":0,"equivocation_count":0,"current":{"canonical_record":{"metadata":{"abstract_canon_sha256":"4427053b341f9d9a82b52bb5162432470c20d502feb2bd95b94874950c0653aa","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.IR","submitted_at":"2025-04-19T06:59:34Z","title_canon_sha256":"d70f36786505639f0aa9802f25e6c23a76887bf181f13b5935044cea291ac94b"},"schema_version":"1.0","source":{"id":"2504.14208","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2504.14208","created_at":"2026-07-05T10:51:39Z"},{"alias_kind":"arxiv_version","alias_value":"2504.14208v1","created_at":"2026-07-05T10:51:39Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2504.14208","created_at":"2026-07-05T10:51:39Z"},{"alias_kind":"pith_short_12","alias_value":"AVGHRTA2EOHF","created_at":"2026-07-05T10:51:39Z"},{"alias_kind":"pith_short_16","alias_value":"AVGHRTA2EOHFWGQG","created_at":"2026-07-05T10:51:39Z"},{"alias_kind":"pith_short_8","alias_value":"AVGHRTA2","created_at":"2026-07-05T10:51:39Z"}],"graph_snapshots":[{"event_id":"sha256:e674a7aa46d536f3e62927fc8c4d3a52684241965bc059657400f1c76903efb1","target":"graph","created_at":"2026-07-05T10:51:39Z","signer":{"key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signer_id":"pith.science","signer_type":"pith_registry"},"payload":{"graph_snapshot":{"author_claims":{"count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","strong_count":0},"builder_version":"pith-number-builder-2026-05-17-v1","claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"integrity":{"available":true,"clean":true,"detectors_run":[],"endpoint":"/pith/2504.14208/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Recommendation algorithms rely on user historical interactions to deliver personalized suggestions, which raises significant privacy concerns. Federated recommendation algorithms tackle this issue by combining local model training with server-side model aggregation, where most existing algorithms use a uniform weighted summation to aggregate item embeddings from different client models. This approach has three major limitations: 1) information loss during aggregation, 2) failure to retain personalized local features, and 3) incompatibility with parameter-free recommendation algorithms. To addr","authors_text":"Dongsheng Li, Hansu Gu, Jiafeng Xia, Jiahao Liu, Mingzhe Han, Ning Gu, Peng Zhang, Tun Lu","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.IR","submitted_at":"2025-04-19T06:59:34Z","title":"FedCIA: Federated Collaborative Information Aggregation for Privacy-Preserving Recommendation"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2504.14208","kind":"arxiv","version":1},"verdict":{"created_at":null,"id":null,"model_set":{},"one_line_summary":"","pipeline_version":null,"pith_extraction_headline":"","strongest_claim":"","weakest_assumption":""}},"verdict_id":null}}],"author_attestations":[],"timestamp_anchors":[],"storage_attestations":[],"citation_signatures":[],"replication_records":[],"corrections":[],"mirror_hints":[],"record_created":{"event_id":"sha256:986d3a744fea388f9e9c10aa209731b677c19d2b588009111be8b31f3a5c3b6c","target":"record","created_at":"2026-07-05T10:51:39Z","signer":{"key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signer_id":"pith.science","signer_type":"pith_registry"},"payload":{"attestation_state":"computed","canonical_record":{"metadata":{"abstract_canon_sha256":"4427053b341f9d9a82b52bb5162432470c20d502feb2bd95b94874950c0653aa","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.IR","submitted_at":"2025-04-19T06:59:34Z","title_canon_sha256":"d70f36786505639f0aa9802f25e6c23a76887bf181f13b5935044cea291ac94b"},"schema_version":"1.0","source":{"id":"2504.14208","kind":"arxiv","version":1}},"canonical_sha256":"054c78cc1a238e5b1a0605ef3a16f297b75af662a3a798da06dd64764a3f1359","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"054c78cc1a238e5b1a0605ef3a16f297b75af662a3a798da06dd64764a3f1359","first_computed_at":"2026-07-05T10:51:39.831516Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T10:51:39.831516Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"X4Y90E9gH06S+TU2LAFsdDgdV1rRTCmFTz4j0DETS7xlgtPo+S6zyPJoSWCYxzp6kkjrDM9dbt0b2X9Hyk2XAQ==","signature_status":"signed_v1","signed_at":"2026-07-05T10:51:39.831983Z","signed_message":"canonical_sha256_bytes"},"source_id":"2504.14208","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:986d3a744fea388f9e9c10aa209731b677c19d2b588009111be8b31f3a5c3b6c","sha256:e674a7aa46d536f3e62927fc8c4d3a52684241965bc059657400f1c76903efb1"],"state_sha256":"beb9cbf7096800f4835ea59484faad5feb219f4449bb86a68189dce5ba7135b5"}