{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2024:XJFFR5IFIH4H3QCYIC6FK34PT5","short_pith_number":"pith:XJFFR5IF","canonical_record":{"source":{"id":"2409.03294","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.IR","submitted_at":"2024-09-05T06:59:56Z","cross_cats_sorted":[],"title_canon_sha256":"a1d3c922a9b132784bc7a4440bee87bb0070c034955b0108ec1d61efbb05dc06","abstract_canon_sha256":"8273540a2b2720f4344810c2e3c02046bc66d6686600f6aa8487e1c1dd0207a1"},"schema_version":"1.0"},"canonical_sha256":"ba4a58f50541f87dc05840bc556f8f9f7101397a89eef9e852d2122fe5012263","source":{"kind":"arxiv","id":"2409.03294","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2409.03294","created_at":"2026-07-05T11:03:16Z"},{"alias_kind":"arxiv_version","alias_value":"2409.03294v2","created_at":"2026-07-05T11:03:16Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2409.03294","created_at":"2026-07-05T11:03:16Z"},{"alias_kind":"pith_short_12","alias_value":"XJFFR5IFIH4H","created_at":"2026-07-05T11:03:16Z"},{"alias_kind":"pith_short_16","alias_value":"XJFFR5IFIH4H3QCY","created_at":"2026-07-05T11:03:16Z"},{"alias_kind":"pith_short_8","alias_value":"XJFFR5IF","created_at":"2026-07-05T11:03:16Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2024:XJFFR5IFIH4H3QCYIC6FK34PT5","target":"record","payload":{"canonical_record":{"source":{"id":"2409.03294","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.IR","submitted_at":"2024-09-05T06:59:56Z","cross_cats_sorted":[],"title_canon_sha256":"a1d3c922a9b132784bc7a4440bee87bb0070c034955b0108ec1d61efbb05dc06","abstract_canon_sha256":"8273540a2b2720f4344810c2e3c02046bc66d6686600f6aa8487e1c1dd0207a1"},"schema_version":"1.0"},"canonical_sha256":"ba4a58f50541f87dc05840bc556f8f9f7101397a89eef9e852d2122fe5012263","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T11:03:16.512265Z","signature_b64":"0IBEc61jPAX9lnwtQ5Bv3oENLyNGQWH/w+Hkbuf2gS3feHfXvaIeOlmeToaITLrAMmebROpj9TBD2eCuOn3GAA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"ba4a58f50541f87dc05840bc556f8f9f7101397a89eef9e852d2122fe5012263","last_reissued_at":"2026-07-05T11:03:16.511824Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T11:03:16.511824Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2409.03294","source_version":2,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-07-05T11:03:16Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"8iJjsr7w0NhoD42Z/d+RpkDACNfKQEAQM9XNBNGF9i9mcmLNBvqWzBaomq/1kIw/0gsC01NR7DdIcU+TKcDkAQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-11T06:56:11.493980Z"},"content_sha256":"8a9729535f2e6ba342da01d6e01eb357d10502fb4eadc4ded8d728296cb15fe6","schema_version":"1.0","event_id":"sha256:8a9729535f2e6ba342da01d6e01eb357d10502fb4eadc4ded8d728296cb15fe6"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2024:XJFFR5IFIH4H3QCYIC6FK34PT5","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"FedPCL-CDR: A Federated Prototype-based Contrastive Learning Framework for Privacy-Preserving Cross-domain Recommendation","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cs.IR","authors_text":"Li Wang, Min Xu, Qiang Wu","submitted_at":"2024-09-05T06:59:56Z","abstract_excerpt":"Cross-domain recommendation (CDR) aims to improve recommendation accuracy in sparse domains by transferring knowledge from data-rich domains. However, existing CDR approaches often assume that user-item interaction data across domains is publicly available, neglecting user privacy concerns. Additionally, they experience performance degradation with sparse overlapping users due to their reliance on a large number of fully shared users for knowledge transfer. To address these challenges, we propose a Federated Prototype-based Contrastive Learning (CL) framework for Privacy Preserving CDR, called"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2409.03294","kind":"arxiv","version":2},"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/2409.03294/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":"2026-07-05T11:03:16Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"+G0gC9iSVK4qM8rv7y/RoMvdZRYFKd1mBbNRRz3tAiUiTVHGLPC1cVPsRU9mOXtaSkdFcS6IgqzgJG3BJkeqDA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-11T06:56:11.494850Z"},"content_sha256":"84854899a21d67126ce8f2a91010d52aca42affb0cd5385fd1249e30d9557f60","schema_version":"1.0","event_id":"sha256:84854899a21d67126ce8f2a91010d52aca42affb0cd5385fd1249e30d9557f60"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/XJFFR5IFIH4H3QCYIC6FK34PT5/bundle.json","state_url":"https://pith.science/pith/XJFFR5IFIH4H3QCYIC6FK34PT5/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/XJFFR5IFIH4H3QCYIC6FK34PT5/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":"2026-08-11T06:56:11Z","links":{"resolver":"https://pith.science/pith/XJFFR5IFIH4H3QCYIC6FK34PT5","bundle":"https://pith.science/pith/XJFFR5IFIH4H3QCYIC6FK34PT5/bundle.json","state":"https://pith.science/pith/XJFFR5IFIH4H3QCYIC6FK34PT5/state.json","well_known_bundle":"https://pith.science/.well-known/pith/XJFFR5IFIH4H3QCYIC6FK34PT5/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2024:XJFFR5IFIH4H3QCYIC6FK34PT5","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":"8273540a2b2720f4344810c2e3c02046bc66d6686600f6aa8487e1c1dd0207a1","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.IR","submitted_at":"2024-09-05T06:59:56Z","title_canon_sha256":"a1d3c922a9b132784bc7a4440bee87bb0070c034955b0108ec1d61efbb05dc06"},"schema_version":"1.0","source":{"id":"2409.03294","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2409.03294","created_at":"2026-07-05T11:03:16Z"},{"alias_kind":"arxiv_version","alias_value":"2409.03294v2","created_at":"2026-07-05T11:03:16Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2409.03294","created_at":"2026-07-05T11:03:16Z"},{"alias_kind":"pith_short_12","alias_value":"XJFFR5IFIH4H","created_at":"2026-07-05T11:03:16Z"},{"alias_kind":"pith_short_16","alias_value":"XJFFR5IFIH4H3QCY","created_at":"2026-07-05T11:03:16Z"},{"alias_kind":"pith_short_8","alias_value":"XJFFR5IF","created_at":"2026-07-05T11:03:16Z"}],"graph_snapshots":[{"event_id":"sha256:84854899a21d67126ce8f2a91010d52aca42affb0cd5385fd1249e30d9557f60","target":"graph","created_at":"2026-07-05T11:03:16Z","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/2409.03294/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Cross-domain recommendation (CDR) aims to improve recommendation accuracy in sparse domains by transferring knowledge from data-rich domains. However, existing CDR approaches often assume that user-item interaction data across domains is publicly available, neglecting user privacy concerns. Additionally, they experience performance degradation with sparse overlapping users due to their reliance on a large number of fully shared users for knowledge transfer. To address these challenges, we propose a Federated Prototype-based Contrastive Learning (CL) framework for Privacy Preserving CDR, called","authors_text":"Li Wang, Min Xu, Qiang Wu","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.IR","submitted_at":"2024-09-05T06:59:56Z","title":"FedPCL-CDR: A Federated Prototype-based Contrastive Learning Framework for Privacy-Preserving Cross-domain Recommendation"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2409.03294","kind":"arxiv","version":2},"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":"sha256:8a9729535f2e6ba342da01d6e01eb357d10502fb4eadc4ded8d728296cb15fe6","target":"record","created_at":"2026-07-05T11:03:16Z","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":"8273540a2b2720f4344810c2e3c02046bc66d6686600f6aa8487e1c1dd0207a1","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.IR","submitted_at":"2024-09-05T06:59:56Z","title_canon_sha256":"a1d3c922a9b132784bc7a4440bee87bb0070c034955b0108ec1d61efbb05dc06"},"schema_version":"1.0","source":{"id":"2409.03294","kind":"arxiv","version":2}},"canonical_sha256":"ba4a58f50541f87dc05840bc556f8f9f7101397a89eef9e852d2122fe5012263","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"ba4a58f50541f87dc05840bc556f8f9f7101397a89eef9e852d2122fe5012263","first_computed_at":"2026-07-05T11:03:16.511824Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T11:03:16.511824Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"0IBEc61jPAX9lnwtQ5Bv3oENLyNGQWH/w+Hkbuf2gS3feHfXvaIeOlmeToaITLrAMmebROpj9TBD2eCuOn3GAA==","signature_status":"signed_v1","signed_at":"2026-07-05T11:03:16.512265Z","signed_message":"canonical_sha256_bytes"},"source_id":"2409.03294","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:8a9729535f2e6ba342da01d6e01eb357d10502fb4eadc4ded8d728296cb15fe6","sha256:84854899a21d67126ce8f2a91010d52aca42affb0cd5385fd1249e30d9557f60"],"state_sha256":"c37ac757df9370c020a4ad588d49c3a14b9660efcb6f1d4da398e5b7118559e0"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"hglhTvCLxiG+Q8BSjpFOWF5w4LyFvfy5bEqFqEt8CssVGTlG3GRWkgbFqny4p5Rm4dE7jBnTOLX9pd/ZPdjKCA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-11T06:56:11.499139Z","bundle_sha256":"3bc3db2db135d56133bc5aabb5c08dcbaffba872b78013b6fb05b3f2a3b14f50"}}