{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2025:MSUYDD76G7T36NOHSJTOVUKW37","short_pith_number":"pith:MSUYDD76","canonical_record":{"source":{"id":"2502.16239","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.IR","submitted_at":"2025-02-22T14:22:48Z","cross_cats_sorted":["cs.LG","cs.SI"],"title_canon_sha256":"5e698be100927de3ac8be4ebeaf628f48269e3a9d086eb305c5baa08a28ff5b9","abstract_canon_sha256":"32c97cbf6c7ff11d9f5d1ac08d5886e6a8d7172f4385dd749cdfc2394584c9b3"},"schema_version":"1.0"},"canonical_sha256":"64a9818ffe37e7bf35c79266ead156dfe6dbd53e1396951409496b45d683cc2d","source":{"kind":"arxiv","id":"2502.16239","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2502.16239","created_at":"2026-07-05T10:18:23Z"},{"alias_kind":"arxiv_version","alias_value":"2502.16239v1","created_at":"2026-07-05T10:18:23Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2502.16239","created_at":"2026-07-05T10:18:23Z"},{"alias_kind":"pith_short_12","alias_value":"MSUYDD76G7T3","created_at":"2026-07-05T10:18:23Z"},{"alias_kind":"pith_short_16","alias_value":"MSUYDD76G7T36NOH","created_at":"2026-07-05T10:18:23Z"},{"alias_kind":"pith_short_8","alias_value":"MSUYDD76","created_at":"2026-07-05T10:18:23Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2025:MSUYDD76G7T36NOHSJTOVUKW37","target":"record","payload":{"canonical_record":{"source":{"id":"2502.16239","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.IR","submitted_at":"2025-02-22T14:22:48Z","cross_cats_sorted":["cs.LG","cs.SI"],"title_canon_sha256":"5e698be100927de3ac8be4ebeaf628f48269e3a9d086eb305c5baa08a28ff5b9","abstract_canon_sha256":"32c97cbf6c7ff11d9f5d1ac08d5886e6a8d7172f4385dd749cdfc2394584c9b3"},"schema_version":"1.0"},"canonical_sha256":"64a9818ffe37e7bf35c79266ead156dfe6dbd53e1396951409496b45d683cc2d","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T10:18:23.616570Z","signature_b64":"/5uMlikeDwu1/5ICjf8UzamxH/PPaFE44LOjyBXxXBP+4g0C2iWBLJOK/QG+rwQPQu+Y1icH1ZVzk+jXlB0pBg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"64a9818ffe37e7bf35c79266ead156dfe6dbd53e1396951409496b45d683cc2d","last_reissued_at":"2026-07-05T10:18:23.616118Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T10:18:23.616118Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2502.16239","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":"2026-07-05T10:18:23Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"4zcdZVz7r60YGjYsiXwlVd3og8SI3K6Aps9QTl33SdtVXAmhUsauu8hwPJUUsd9io4TtR5S1xuOSjXguwu74DQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-01T02:52:30.942333Z"},"content_sha256":"a7af052c2c2ad937cf2bce692d5e63f42f68e30793a03b7c0cd31afd34b08b4e","schema_version":"1.0","event_id":"sha256:a7af052c2c2ad937cf2bce692d5e63f42f68e30793a03b7c0cd31afd34b08b4e"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2025:MSUYDD76G7T36NOHSJTOVUKW37","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Separated Contrastive Learning for Matching in Cross-domain Recommendation with Curriculum Scheduling","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cs.LG","cs.SI"],"primary_cat":"cs.IR","authors_text":"Cheng Hu, Heng Chang, Hong Zhu, Liang Gu, Yuan Fang, Yuhui Xu, Zhen Chen, Zhinan Zhang","submitted_at":"2025-02-22T14:22:48Z","abstract_excerpt":"Cross-domain recommendation (CDR) is a task that aims to improve the recommendation performance in a target domain by leveraging the information from source domains. Contrastive learning methods have been widely adopted among intra-domain (intra-CL) and inter-domain (inter-CL) users/items for their representation learning and knowledge transfer during the matching stage of CDR. However, we observe that directly employing contrastive learning on mixed-up intra-CL and inter-CL tasks ignores the difficulty of learning from inter-domain over learning from intra-domain, and thus could cause severe "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2502.16239","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/2502.16239/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":"2026-07-05T10:18:23Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"0f2urqv2f8zfx5+BCXw05fShq1xr0z6Ao5lShfTIdCi/AQM7gXpCsjenACxfr5O8WeQQ2aZ6NKAxIt7z/kPpCw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-01T02:52:30.943639Z"},"content_sha256":"b17b056cc896b2bedf8dbb9699739c5a5f7f9ce8c8f80d688050029f8d6ac70c","schema_version":"1.0","event_id":"sha256:b17b056cc896b2bedf8dbb9699739c5a5f7f9ce8c8f80d688050029f8d6ac70c"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/MSUYDD76G7T36NOHSJTOVUKW37/bundle.json","state_url":"https://pith.science/pith/MSUYDD76G7T36NOHSJTOVUKW37/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/MSUYDD76G7T36NOHSJTOVUKW37/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":"2026-08-01T02:52:30Z","links":{"resolver":"https://pith.science/pith/MSUYDD76G7T36NOHSJTOVUKW37","bundle":"https://pith.science/pith/MSUYDD76G7T36NOHSJTOVUKW37/bundle.json","state":"https://pith.science/pith/MSUYDD76G7T36NOHSJTOVUKW37/state.json","well_known_bundle":"https://pith.science/.well-known/pith/MSUYDD76G7T36NOHSJTOVUKW37/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2025:MSUYDD76G7T36NOHSJTOVUKW37","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":"32c97cbf6c7ff11d9f5d1ac08d5886e6a8d7172f4385dd749cdfc2394584c9b3","cross_cats_sorted":["cs.LG","cs.SI"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.IR","submitted_at":"2025-02-22T14:22:48Z","title_canon_sha256":"5e698be100927de3ac8be4ebeaf628f48269e3a9d086eb305c5baa08a28ff5b9"},"schema_version":"1.0","source":{"id":"2502.16239","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2502.16239","created_at":"2026-07-05T10:18:23Z"},{"alias_kind":"arxiv_version","alias_value":"2502.16239v1","created_at":"2026-07-05T10:18:23Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2502.16239","created_at":"2026-07-05T10:18:23Z"},{"alias_kind":"pith_short_12","alias_value":"MSUYDD76G7T3","created_at":"2026-07-05T10:18:23Z"},{"alias_kind":"pith_short_16","alias_value":"MSUYDD76G7T36NOH","created_at":"2026-07-05T10:18:23Z"},{"alias_kind":"pith_short_8","alias_value":"MSUYDD76","created_at":"2026-07-05T10:18:23Z"}],"graph_snapshots":[{"event_id":"sha256:b17b056cc896b2bedf8dbb9699739c5a5f7f9ce8c8f80d688050029f8d6ac70c","target":"graph","created_at":"2026-07-05T10:18:23Z","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/2502.16239/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Cross-domain recommendation (CDR) is a task that aims to improve the recommendation performance in a target domain by leveraging the information from source domains. Contrastive learning methods have been widely adopted among intra-domain (intra-CL) and inter-domain (inter-CL) users/items for their representation learning and knowledge transfer during the matching stage of CDR. However, we observe that directly employing contrastive learning on mixed-up intra-CL and inter-CL tasks ignores the difficulty of learning from inter-domain over learning from intra-domain, and thus could cause severe ","authors_text":"Cheng Hu, Heng Chang, Hong Zhu, Liang Gu, Yuan Fang, Yuhui Xu, Zhen Chen, Zhinan Zhang","cross_cats":["cs.LG","cs.SI"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.IR","submitted_at":"2025-02-22T14:22:48Z","title":"Separated Contrastive Learning for Matching in Cross-domain Recommendation with Curriculum Scheduling"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2502.16239","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:a7af052c2c2ad937cf2bce692d5e63f42f68e30793a03b7c0cd31afd34b08b4e","target":"record","created_at":"2026-07-05T10:18:23Z","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":"32c97cbf6c7ff11d9f5d1ac08d5886e6a8d7172f4385dd749cdfc2394584c9b3","cross_cats_sorted":["cs.LG","cs.SI"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.IR","submitted_at":"2025-02-22T14:22:48Z","title_canon_sha256":"5e698be100927de3ac8be4ebeaf628f48269e3a9d086eb305c5baa08a28ff5b9"},"schema_version":"1.0","source":{"id":"2502.16239","kind":"arxiv","version":1}},"canonical_sha256":"64a9818ffe37e7bf35c79266ead156dfe6dbd53e1396951409496b45d683cc2d","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"64a9818ffe37e7bf35c79266ead156dfe6dbd53e1396951409496b45d683cc2d","first_computed_at":"2026-07-05T10:18:23.616118Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T10:18:23.616118Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"/5uMlikeDwu1/5ICjf8UzamxH/PPaFE44LOjyBXxXBP+4g0C2iWBLJOK/QG+rwQPQu+Y1icH1ZVzk+jXlB0pBg==","signature_status":"signed_v1","signed_at":"2026-07-05T10:18:23.616570Z","signed_message":"canonical_sha256_bytes"},"source_id":"2502.16239","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:a7af052c2c2ad937cf2bce692d5e63f42f68e30793a03b7c0cd31afd34b08b4e","sha256:b17b056cc896b2bedf8dbb9699739c5a5f7f9ce8c8f80d688050029f8d6ac70c"],"state_sha256":"eb96d413925f2efc8737d3158787c94b547905688dd510cb90b487be12526c7b"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"sihWYhRFmXXlLvg5c8/BqhrFGShwZMruu4qrd9ChdQO+ixjrhYCdtfCVM/jgMyDCpn6BnmigyxRAVqCHhwgzCw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-01T02:52:30.954879Z","bundle_sha256":"efefab8cfc1d5e94d8a1a1e5c90c1504dc42bfa991adef05c91535bcdb8335d1"}}