{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2025:4YD74L2ETBENONOT5BH7RHRH4X","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":"33b5863dedc89c84a02e6a60afb9d92f6762abe9438bbb82a6bff9c6a4dd4fe9","cross_cats_sorted":["math.OC","stat.ML"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cs.LG","submitted_at":"2025-05-09T13:49:05Z","title_canon_sha256":"aeb087732e1c0050e2432b54c3dfdfcc30bc1b1930e63cc6f2fb63bb805e6cfe"},"schema_version":"1.0","source":{"id":"2505.06053","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2505.06053","created_at":"2026-07-05T11:14:59Z"},{"alias_kind":"arxiv_version","alias_value":"2505.06053v1","created_at":"2026-07-05T11:14:59Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2505.06053","created_at":"2026-07-05T11:14:59Z"},{"alias_kind":"pith_short_12","alias_value":"4YD74L2ETBEN","created_at":"2026-07-05T11:14:59Z"},{"alias_kind":"pith_short_16","alias_value":"4YD74L2ETBENONOT","created_at":"2026-07-05T11:14:59Z"},{"alias_kind":"pith_short_8","alias_value":"4YD74L2E","created_at":"2026-07-05T11:14:59Z"}],"graph_snapshots":[{"event_id":"sha256:b6e3fc099ce5d2152765ad4c3c8a569bcbec3541d0eab3363d48180d85be4007","target":"graph","created_at":"2026-07-05T11:14:59Z","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/2505.06053/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Federated learning faces severe communication bottlenecks due to the high dimensionality of model updates. Communication compression with contractive compressors (e.g., Top-K) is often preferable in practice but can degrade performance without proper handling. Error feedback (EF) mitigates such issues but has been largely restricted for smooth, unconstrained problems, limiting its real-world applicability where non-smooth objectives and safety constraints are critical. We advance our understanding of EF in the canonical non-smooth convex setting by establishing new lower complexity bounds for ","authors_text":"Ilyas Fatkhullin, Rustem Islamov, Yarden As","cross_cats":["math.OC","stat.ML"],"headline":"","license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cs.LG","submitted_at":"2025-05-09T13:49:05Z","title":"Safe-EF: Error Feedback for Nonsmooth Constrained Optimization"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2505.06053","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:f6a148ebc1ab6d0a9e88c28c95e4ce46218ea82dfe9c8aff1afa147f3a010055","target":"record","created_at":"2026-07-05T11:14:59Z","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":"33b5863dedc89c84a02e6a60afb9d92f6762abe9438bbb82a6bff9c6a4dd4fe9","cross_cats_sorted":["math.OC","stat.ML"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cs.LG","submitted_at":"2025-05-09T13:49:05Z","title_canon_sha256":"aeb087732e1c0050e2432b54c3dfdfcc30bc1b1930e63cc6f2fb63bb805e6cfe"},"schema_version":"1.0","source":{"id":"2505.06053","kind":"arxiv","version":1}},"canonical_sha256":"e607fe2f449848d735d3e84ff89e27e5e2c8a4f07e34ede0c22c89c4de895719","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"e607fe2f449848d735d3e84ff89e27e5e2c8a4f07e34ede0c22c89c4de895719","first_computed_at":"2026-07-05T11:14:59.369043Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T11:14:59.369043Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"gsbH3+ofLJ2HYdxAhlhTSS9SrfbWoqqbao1zGrWl6XPk1hQRXIF38xANn79ziiZ/MwzWKmgA6gxg1BHr6xIACw==","signature_status":"signed_v1","signed_at":"2026-07-05T11:14:59.371104Z","signed_message":"canonical_sha256_bytes"},"source_id":"2505.06053","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:f6a148ebc1ab6d0a9e88c28c95e4ce46218ea82dfe9c8aff1afa147f3a010055","sha256:b6e3fc099ce5d2152765ad4c3c8a569bcbec3541d0eab3363d48180d85be4007"],"state_sha256":"12ca7deaf3c7afc757dec477274369c635b6724fd5951d57453db39ad2110d57"}