{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2020:7AIBZS74H4NNI3K3NHCNYNT7QH","short_pith_number":"pith:7AIBZS74","canonical_record":{"source":{"id":"2003.00911","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.IR","submitted_at":"2020-02-28T02:26:30Z","cross_cats_sorted":["cs.LG","stat.ML"],"title_canon_sha256":"82af16ea88a1cac0f71387799d774ac6d67968209310cd66217d5091e783ba32","abstract_canon_sha256":"cdbb98f827f5cf3250d82829e011e1f3dc288062b85be788ab82e3b717803caa"},"schema_version":"1.0"},"canonical_sha256":"f8101ccbfc3f1ad46d5b69c4dc367f81f478f94b6a85cb1c2e550e43d7ab1237","source":{"kind":"arxiv","id":"2003.00911","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2003.00911","created_at":"2026-07-05T00:44:59Z"},{"alias_kind":"arxiv_version","alias_value":"2003.00911v1","created_at":"2026-07-05T00:44:59Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2003.00911","created_at":"2026-07-05T00:44:59Z"},{"alias_kind":"pith_short_12","alias_value":"7AIBZS74H4NN","created_at":"2026-07-05T00:44:59Z"},{"alias_kind":"pith_short_16","alias_value":"7AIBZS74H4NNI3K3","created_at":"2026-07-05T00:44:59Z"},{"alias_kind":"pith_short_8","alias_value":"7AIBZS74","created_at":"2026-07-05T00:44:59Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2020:7AIBZS74H4NNI3K3NHCNYNT7QH","target":"record","payload":{"canonical_record":{"source":{"id":"2003.00911","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.IR","submitted_at":"2020-02-28T02:26:30Z","cross_cats_sorted":["cs.LG","stat.ML"],"title_canon_sha256":"82af16ea88a1cac0f71387799d774ac6d67968209310cd66217d5091e783ba32","abstract_canon_sha256":"cdbb98f827f5cf3250d82829e011e1f3dc288062b85be788ab82e3b717803caa"},"schema_version":"1.0"},"canonical_sha256":"f8101ccbfc3f1ad46d5b69c4dc367f81f478f94b6a85cb1c2e550e43d7ab1237","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T00:44:59.318634Z","signature_b64":"f3ajyML6OQJztc4vfIUnlUUB5O0Kn3dX7+PBYzCGaij73NrLNhTzNihseG4AkQytvh6pXn05Tshc1tPBeGdMDw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"f8101ccbfc3f1ad46d5b69c4dc367f81f478f94b6a85cb1c2e550e43d7ab1237","last_reissued_at":"2026-07-05T00:44:59.318260Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T00:44:59.318260Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2003.00911","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":"2026-07-05T00:44:59Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"pGniz9MfiA6P5jEw/qEoLoRvC72sO3pzOox+eI8CnYKT97JqlNV7+eJsJ2w2bb5KMmdRW4N54WasWWopdSA/BQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-10T06:51:43.830723Z"},"content_sha256":"28e65804872e2b8312884f67e2bf17ff85e1d4ca907eefd891fa6ce7f737e20b","schema_version":"1.0","event_id":"sha256:28e65804872e2b8312884f67e2bf17ff85e1d4ca907eefd891fa6ce7f737e20b"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2020:7AIBZS74H4NNI3K3NHCNYNT7QH","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"A Survey on Knowledge Graph-Based Recommender Systems","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cs.LG","stat.ML"],"primary_cat":"cs.IR","authors_text":"Chuan Qin, Fuzhen Zhuang, Hengshu Zhu, Hui Xiong, Qing He, Qingyu Guo, Xing Xie","submitted_at":"2020-02-28T02:26:30Z","abstract_excerpt":"To solve the information explosion problem and enhance user experience in various online applications, recommender systems have been developed to model users preferences. Although numerous efforts have been made toward more personalized recommendations, recommender systems still suffer from several challenges, such as data sparsity and cold start. In recent years, generating recommendations with the knowledge graph as side information has attracted considerable interest. Such an approach can not only alleviate the abovementioned issues for a more accurate recommendation, but also provide expla"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2003.00911","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/2003.00911/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":"2026-07-05T00:44:59Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"KRDZcRJiI7r89J1apKOjxOYexTtKtTTVEDwQDab66PrhucwmkmkKzuMfOVzS4ajfSG6orjsjlf+ILyugKM4pAA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-10T06:51:43.831331Z"},"content_sha256":"92c0ebe9f783e9a86e362ad4a235a8e1ed13f721904b70013c4b71353a009d19","schema_version":"1.0","event_id":"sha256:92c0ebe9f783e9a86e362ad4a235a8e1ed13f721904b70013c4b71353a009d19"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/7AIBZS74H4NNI3K3NHCNYNT7QH/bundle.json","state_url":"https://pith.science/pith/7AIBZS74H4NNI3K3NHCNYNT7QH/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/7AIBZS74H4NNI3K3NHCNYNT7QH/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":"2026-08-10T06:51:43Z","links":{"resolver":"https://pith.science/pith/7AIBZS74H4NNI3K3NHCNYNT7QH","bundle":"https://pith.science/pith/7AIBZS74H4NNI3K3NHCNYNT7QH/bundle.json","state":"https://pith.science/pith/7AIBZS74H4NNI3K3NHCNYNT7QH/state.json","well_known_bundle":"https://pith.science/.well-known/pith/7AIBZS74H4NNI3K3NHCNYNT7QH/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2020:7AIBZS74H4NNI3K3NHCNYNT7QH","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":"cdbb98f827f5cf3250d82829e011e1f3dc288062b85be788ab82e3b717803caa","cross_cats_sorted":["cs.LG","stat.ML"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.IR","submitted_at":"2020-02-28T02:26:30Z","title_canon_sha256":"82af16ea88a1cac0f71387799d774ac6d67968209310cd66217d5091e783ba32"},"schema_version":"1.0","source":{"id":"2003.00911","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2003.00911","created_at":"2026-07-05T00:44:59Z"},{"alias_kind":"arxiv_version","alias_value":"2003.00911v1","created_at":"2026-07-05T00:44:59Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2003.00911","created_at":"2026-07-05T00:44:59Z"},{"alias_kind":"pith_short_12","alias_value":"7AIBZS74H4NN","created_at":"2026-07-05T00:44:59Z"},{"alias_kind":"pith_short_16","alias_value":"7AIBZS74H4NNI3K3","created_at":"2026-07-05T00:44:59Z"},{"alias_kind":"pith_short_8","alias_value":"7AIBZS74","created_at":"2026-07-05T00:44:59Z"}],"graph_snapshots":[{"event_id":"sha256:92c0ebe9f783e9a86e362ad4a235a8e1ed13f721904b70013c4b71353a009d19","target":"graph","created_at":"2026-07-05T00:44:59Z","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/2003.00911/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"To solve the information explosion problem and enhance user experience in various online applications, recommender systems have been developed to model users preferences. Although numerous efforts have been made toward more personalized recommendations, recommender systems still suffer from several challenges, such as data sparsity and cold start. In recent years, generating recommendations with the knowledge graph as side information has attracted considerable interest. Such an approach can not only alleviate the abovementioned issues for a more accurate recommendation, but also provide expla","authors_text":"Chuan Qin, Fuzhen Zhuang, Hengshu Zhu, Hui Xiong, Qing He, Qingyu Guo, Xing Xie","cross_cats":["cs.LG","stat.ML"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.IR","submitted_at":"2020-02-28T02:26:30Z","title":"A Survey on Knowledge Graph-Based Recommender Systems"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2003.00911","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":"sha256:28e65804872e2b8312884f67e2bf17ff85e1d4ca907eefd891fa6ce7f737e20b","target":"record","created_at":"2026-07-05T00:44:59Z","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":"cdbb98f827f5cf3250d82829e011e1f3dc288062b85be788ab82e3b717803caa","cross_cats_sorted":["cs.LG","stat.ML"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.IR","submitted_at":"2020-02-28T02:26:30Z","title_canon_sha256":"82af16ea88a1cac0f71387799d774ac6d67968209310cd66217d5091e783ba32"},"schema_version":"1.0","source":{"id":"2003.00911","kind":"arxiv","version":1}},"canonical_sha256":"f8101ccbfc3f1ad46d5b69c4dc367f81f478f94b6a85cb1c2e550e43d7ab1237","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"f8101ccbfc3f1ad46d5b69c4dc367f81f478f94b6a85cb1c2e550e43d7ab1237","first_computed_at":"2026-07-05T00:44:59.318260Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T00:44:59.318260Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"f3ajyML6OQJztc4vfIUnlUUB5O0Kn3dX7+PBYzCGaij73NrLNhTzNihseG4AkQytvh6pXn05Tshc1tPBeGdMDw==","signature_status":"signed_v1","signed_at":"2026-07-05T00:44:59.318634Z","signed_message":"canonical_sha256_bytes"},"source_id":"2003.00911","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:28e65804872e2b8312884f67e2bf17ff85e1d4ca907eefd891fa6ce7f737e20b","sha256:92c0ebe9f783e9a86e362ad4a235a8e1ed13f721904b70013c4b71353a009d19"],"state_sha256":"55384c20c9e562178218cd22d07aab4f8cbd330fc0293eeaa0b558fcf40281e7"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"kcccKBJeGQrSNUKo5Ya8U4MPojCLfz7c5kBt6r4wE2GcTKUbZkG/lB8/3nkFkk8U+XX1FHhczRbwx4GQjveVCw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-10T06:51:43.835352Z","bundle_sha256":"a67004a7490eee54078d47c715dacdfd0d79a21d95cd7d2c1da7e2d81cfce4f8"}}