{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2023:SCIHUW3OM6GJZSIWPMOGO6VDHF","short_pith_number":"pith:SCIHUW3O","canonical_record":{"source":{"id":"2302.10900","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.LG","submitted_at":"2023-02-10T03:57:45Z","cross_cats_sorted":["cs.AI","cs.IR"],"title_canon_sha256":"69e857abb9408ec8539c946c3dd173a141dbdf4ed18d977dcfc0e3fe878430d4","abstract_canon_sha256":"6dfd29578062b6f39aca432725bdb796836433793afccc82bc1cc2b8b78d3373"},"schema_version":"1.0"},"canonical_sha256":"90907a5b6e678c9cc9167b1c677aa33979e2a8c80bed1b20dea896fe037601bb","source":{"kind":"arxiv","id":"2302.10900","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2302.10900","created_at":"2026-07-05T05:44:40Z"},{"alias_kind":"arxiv_version","alias_value":"2302.10900v1","created_at":"2026-07-05T05:44:40Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2302.10900","created_at":"2026-07-05T05:44:40Z"},{"alias_kind":"pith_short_12","alias_value":"SCIHUW3OM6GJ","created_at":"2026-07-05T05:44:40Z"},{"alias_kind":"pith_short_16","alias_value":"SCIHUW3OM6GJZSIW","created_at":"2026-07-05T05:44:40Z"},{"alias_kind":"pith_short_8","alias_value":"SCIHUW3O","created_at":"2026-07-05T05:44:40Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2023:SCIHUW3OM6GJZSIWPMOGO6VDHF","target":"record","payload":{"canonical_record":{"source":{"id":"2302.10900","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.LG","submitted_at":"2023-02-10T03:57:45Z","cross_cats_sorted":["cs.AI","cs.IR"],"title_canon_sha256":"69e857abb9408ec8539c946c3dd173a141dbdf4ed18d977dcfc0e3fe878430d4","abstract_canon_sha256":"6dfd29578062b6f39aca432725bdb796836433793afccc82bc1cc2b8b78d3373"},"schema_version":"1.0"},"canonical_sha256":"90907a5b6e678c9cc9167b1c677aa33979e2a8c80bed1b20dea896fe037601bb","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T05:44:40.720128Z","signature_b64":"TsswhYPak2cOECO0w4AKhzedzMjO4zYuGpQcw9pm4CGRfS5WwK1al+QTAd4MrCnnmmbJv+GZSX75H3hf/1SBCQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"90907a5b6e678c9cc9167b1c677aa33979e2a8c80bed1b20dea896fe037601bb","last_reissued_at":"2026-07-05T05:44:40.719436Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T05:44:40.719436Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2302.10900","source_version":1,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-07-05T05:44:40Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"d4vWjDW0sDZulwV4GLzVwthbIkoJByodzbUdbjRB9VNNRKE24hXsUdKMxsweJp+7+uDQhTDYdLKzai1+joR8Bg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-04T23:07:25.873840Z"},"content_sha256":"3a23f8ebdfc3c14bfabcae346367df935a67b7a3bd225e05f18ecdd429350a32","schema_version":"1.0","event_id":"sha256:3a23f8ebdfc3c14bfabcae346367df935a67b7a3bd225e05f18ecdd429350a32"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2023:SCIHUW3OM6GJZSIWPMOGO6VDHF","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Semi-decentralized Federated Ego Graph Learning for Recommendation","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cs.AI","cs.IR"],"primary_cat":"cs.LG","authors_text":"Hongzhi Yin, Liang Qu, Ningzhi Tang, Quoc Viet Hung Nguyen, Ruiqi Zheng, Yuhui Shi, Zi Huang","submitted_at":"2023-02-10T03:57:45Z","abstract_excerpt":"Collaborative filtering (CF) based recommender systems are typically trained based on personal interaction data (e.g., clicks and purchases) that could be naturally represented as ego graphs. However, most existing recommendation methods collect these ego graphs from all users to compose a global graph to obtain high-order collaborative information between users and items, and these centralized CF recommendation methods inevitably lead to a high risk of user privacy leakage. Although recently proposed federated recommendation systems can mitigate the privacy problem, they either restrict the o"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2302.10900","kind":"arxiv","version":1},"verdict":{"id":null,"model_set":{},"created_at":null,"strongest_claim":"","one_line_summary":"","pipeline_version":null,"weakest_assumption":"","pith_extraction_headline":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2302.10900/integrity.json","findings":[],"available":true,"detectors_run":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938"},"references":{"count":0,"sample":[],"resolved_work":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","internal_anchors":0},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"author_claims":{"count":0,"strong_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"builder_version":"pith-number-builder-2026-05-17-v1"},"verdict_id":null},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-07-05T05:44:40Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Ku4BfimliHHGc81jy58l9NedtGl5GqZ1M8gs9fgp1xRefzcy/aoBX/zJa9c5aMQo8dlpVNqS7VLIdDWm8dfrDw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-04T23:07:25.874466Z"},"content_sha256":"998dc1a83191c0324e9e9f607cb8b5eb7fd40ce50bbd98a5f370ae3cdcd17b59","schema_version":"1.0","event_id":"sha256:998dc1a83191c0324e9e9f607cb8b5eb7fd40ce50bbd98a5f370ae3cdcd17b59"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/SCIHUW3OM6GJZSIWPMOGO6VDHF/bundle.json","state_url":"https://pith.science/pith/SCIHUW3OM6GJZSIWPMOGO6VDHF/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/SCIHUW3OM6GJZSIWPMOGO6VDHF/bundle.json","status":"primary"}],"public_keys":[{"key_id":"pith-v1-2026-05","algorithm":"ed25519","format":"raw","public_key_b64":"stVStoiQhXFxp4s2pdzPNoqVNBMojDU/fJ2db5S3CbM=","public_key_hex":"b2d552b68890857171a78b36a5dccf368a953413288c353f7c9d9d6f94b709b3","fingerprint_sha256_b32_first128bits":"RVFV5Z2OI2J3ZUO7ERDEBCYNKS","fingerprint_sha256_hex":"8d4b5ee74e4693bcd1df2446408b0d54","rotates_at":null,"url":"https://pith.science/pith-signing-key.json","notes":"Pith uses this Ed25519 key to sign canonical record SHA-256 digests. Verify with: ed25519_verify(public_key, message=canonical_sha256_bytes, signature=base64decode(signature_b64))."}],"merge_version":"pith-open-graph-merge-v1","built_at":"2026-08-04T23:07:25Z","links":{"resolver":"https://pith.science/pith/SCIHUW3OM6GJZSIWPMOGO6VDHF","bundle":"https://pith.science/pith/SCIHUW3OM6GJZSIWPMOGO6VDHF/bundle.json","state":"https://pith.science/pith/SCIHUW3OM6GJZSIWPMOGO6VDHF/state.json","well_known_bundle":"https://pith.science/.well-known/pith/SCIHUW3OM6GJZSIWPMOGO6VDHF/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2023:SCIHUW3OM6GJZSIWPMOGO6VDHF","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":"6dfd29578062b6f39aca432725bdb796836433793afccc82bc1cc2b8b78d3373","cross_cats_sorted":["cs.AI","cs.IR"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.LG","submitted_at":"2023-02-10T03:57:45Z","title_canon_sha256":"69e857abb9408ec8539c946c3dd173a141dbdf4ed18d977dcfc0e3fe878430d4"},"schema_version":"1.0","source":{"id":"2302.10900","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2302.10900","created_at":"2026-07-05T05:44:40Z"},{"alias_kind":"arxiv_version","alias_value":"2302.10900v1","created_at":"2026-07-05T05:44:40Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2302.10900","created_at":"2026-07-05T05:44:40Z"},{"alias_kind":"pith_short_12","alias_value":"SCIHUW3OM6GJ","created_at":"2026-07-05T05:44:40Z"},{"alias_kind":"pith_short_16","alias_value":"SCIHUW3OM6GJZSIW","created_at":"2026-07-05T05:44:40Z"},{"alias_kind":"pith_short_8","alias_value":"SCIHUW3O","created_at":"2026-07-05T05:44:40Z"}],"graph_snapshots":[{"event_id":"sha256:998dc1a83191c0324e9e9f607cb8b5eb7fd40ce50bbd98a5f370ae3cdcd17b59","target":"graph","created_at":"2026-07-05T05:44:40Z","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/2302.10900/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Collaborative filtering (CF) based recommender systems are typically trained based on personal interaction data (e.g., clicks and purchases) that could be naturally represented as ego graphs. However, most existing recommendation methods collect these ego graphs from all users to compose a global graph to obtain high-order collaborative information between users and items, and these centralized CF recommendation methods inevitably lead to a high risk of user privacy leakage. Although recently proposed federated recommendation systems can mitigate the privacy problem, they either restrict the o","authors_text":"Hongzhi Yin, Liang Qu, Ningzhi Tang, Quoc Viet Hung Nguyen, Ruiqi Zheng, Yuhui Shi, Zi Huang","cross_cats":["cs.AI","cs.IR"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.LG","submitted_at":"2023-02-10T03:57:45Z","title":"Semi-decentralized Federated Ego Graph Learning for Recommendation"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2302.10900","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":"sha256:3a23f8ebdfc3c14bfabcae346367df935a67b7a3bd225e05f18ecdd429350a32","target":"record","created_at":"2026-07-05T05:44:40Z","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":"6dfd29578062b6f39aca432725bdb796836433793afccc82bc1cc2b8b78d3373","cross_cats_sorted":["cs.AI","cs.IR"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.LG","submitted_at":"2023-02-10T03:57:45Z","title_canon_sha256":"69e857abb9408ec8539c946c3dd173a141dbdf4ed18d977dcfc0e3fe878430d4"},"schema_version":"1.0","source":{"id":"2302.10900","kind":"arxiv","version":1}},"canonical_sha256":"90907a5b6e678c9cc9167b1c677aa33979e2a8c80bed1b20dea896fe037601bb","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"90907a5b6e678c9cc9167b1c677aa33979e2a8c80bed1b20dea896fe037601bb","first_computed_at":"2026-07-05T05:44:40.719436Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T05:44:40.719436Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"TsswhYPak2cOECO0w4AKhzedzMjO4zYuGpQcw9pm4CGRfS5WwK1al+QTAd4MrCnnmmbJv+GZSX75H3hf/1SBCQ==","signature_status":"signed_v1","signed_at":"2026-07-05T05:44:40.720128Z","signed_message":"canonical_sha256_bytes"},"source_id":"2302.10900","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:3a23f8ebdfc3c14bfabcae346367df935a67b7a3bd225e05f18ecdd429350a32","sha256:998dc1a83191c0324e9e9f607cb8b5eb7fd40ce50bbd98a5f370ae3cdcd17b59"],"state_sha256":"ca6d3ec4cc6334d3efaf2b6cf53d282d0150595068328485c598dbc551b162f2"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"fKoc1lRD+nXYyzjTVBgIg7faOcaT+mlEVxcNfeMq7KCkAyYOpHd5IUC05DmewzQ5wvzUZlmdAqTJfv8M59M4DA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-04T23:07:25.880069Z","bundle_sha256":"b3c525784a8500c2258d4146ccaa93ed87c83817ec1a7b0567c896aa146de3b6"}}