{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2023:NZ23JZE5VVQUZPYVEPFRCUV7HE","short_pith_number":"pith:NZ23JZE5","canonical_record":{"source":{"id":"2305.00783","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by-nc-sa/4.0/","primary_cat":"cs.IR","submitted_at":"2023-05-01T11:56:22Z","cross_cats_sorted":[],"title_canon_sha256":"73035b950b77d2cec0463a578235d8e4ffb76699cd68c2682c50df3c3d92155b","abstract_canon_sha256":"55ecdfdeeb4b4cb5163c98a5662bdf430df8049fabce9a2481eec083606998bf"},"schema_version":"1.0"},"canonical_sha256":"6e75b4e49dad614cbf1523cb1152bf39187919e02db87e83baf641be8762c189","source":{"kind":"arxiv","id":"2305.00783","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2305.00783","created_at":"2026-07-05T06:05:45Z"},{"alias_kind":"arxiv_version","alias_value":"2305.00783v1","created_at":"2026-07-05T06:05:45Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2305.00783","created_at":"2026-07-05T06:05:45Z"},{"alias_kind":"pith_short_12","alias_value":"NZ23JZE5VVQU","created_at":"2026-07-05T06:05:45Z"},{"alias_kind":"pith_short_16","alias_value":"NZ23JZE5VVQUZPYV","created_at":"2026-07-05T06:05:45Z"},{"alias_kind":"pith_short_8","alias_value":"NZ23JZE5","created_at":"2026-07-05T06:05:45Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2023:NZ23JZE5VVQUZPYVEPFRCUV7HE","target":"record","payload":{"canonical_record":{"source":{"id":"2305.00783","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by-nc-sa/4.0/","primary_cat":"cs.IR","submitted_at":"2023-05-01T11:56:22Z","cross_cats_sorted":[],"title_canon_sha256":"73035b950b77d2cec0463a578235d8e4ffb76699cd68c2682c50df3c3d92155b","abstract_canon_sha256":"55ecdfdeeb4b4cb5163c98a5662bdf430df8049fabce9a2481eec083606998bf"},"schema_version":"1.0"},"canonical_sha256":"6e75b4e49dad614cbf1523cb1152bf39187919e02db87e83baf641be8762c189","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T06:05:45.152235Z","signature_b64":"bsedom5hMDMsdj20vmEp5ftVfrKNXynzRWuA62QzAGo3eDL3Rq83rQCo+Eo/glY/zKe9X+owtCK1um8I09lBDQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"6e75b4e49dad614cbf1523cb1152bf39187919e02db87e83baf641be8762c189","last_reissued_at":"2026-07-05T06:05:45.151832Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T06:05:45.151832Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2305.00783","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":"2026-07-05T06:05:45Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Kaz9a06msP4Qo6ymUKzhf4TNf5T6BuTJ26TxJd9uWDUlVTE//WYhNyC7qskbeBv3FOmmARlIw8l8G/8GWCM+CA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-05T03:19:09.285667Z"},"content_sha256":"8fabfe708d3f054affe05f996e69b1c6171c6b56a8374aff7ab9edc5d1bdf5a2","schema_version":"1.0","event_id":"sha256:8fabfe708d3f054affe05f996e69b1c6171c6b56a8374aff7ab9edc5d1bdf5a2"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2023:NZ23JZE5VVQUZPYVEPFRCUV7HE","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Explicit Knowledge Graph Reasoning for Conversational Recommendation","license":"http://creativecommons.org/licenses/by-nc-sa/4.0/","headline":"","cross_cats":[],"primary_cat":"cs.IR","authors_text":"Hongzhi Yin, Lizhen Cui, Quoc Viet Hung Nguyen, Tong Chen, Xuhui Ren, Zi Huang","submitted_at":"2023-05-01T11:56:22Z","abstract_excerpt":"Traditional recommender systems estimate user preference on items purely based on historical interaction records, thus failing to capture fine-grained yet dynamic user interests and letting users receive recommendation only passively. Recent conversational recommender systems (CRSs) tackle those limitations by enabling recommender systems to interact with the user to obtain her/his current preference through a sequence of clarifying questions. Despite the progress achieved in CRSs, existing solutions are far from satisfaction in the following two aspects: 1) current CRSs usually require each u"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2305.00783","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/2305.00783/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":"2026-07-05T06:05:45Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"mZRFEufaKvBORtQ8EbUpsYLoaW0fU7Q+0FO9e4wIJ6XMFRpefPMgIFy5jMVYvRJU8j6IPuWwZH0jpiScB+ljDA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-05T03:19:09.286173Z"},"content_sha256":"b226e2c60ffe5f38aee1aa7421d5b50d38df5ac93b447623072203b998d90ef2","schema_version":"1.0","event_id":"sha256:b226e2c60ffe5f38aee1aa7421d5b50d38df5ac93b447623072203b998d90ef2"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/NZ23JZE5VVQUZPYVEPFRCUV7HE/bundle.json","state_url":"https://pith.science/pith/NZ23JZE5VVQUZPYVEPFRCUV7HE/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/NZ23JZE5VVQUZPYVEPFRCUV7HE/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":"2026-08-05T03:19:09Z","links":{"resolver":"https://pith.science/pith/NZ23JZE5VVQUZPYVEPFRCUV7HE","bundle":"https://pith.science/pith/NZ23JZE5VVQUZPYVEPFRCUV7HE/bundle.json","state":"https://pith.science/pith/NZ23JZE5VVQUZPYVEPFRCUV7HE/state.json","well_known_bundle":"https://pith.science/.well-known/pith/NZ23JZE5VVQUZPYVEPFRCUV7HE/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2023:NZ23JZE5VVQUZPYVEPFRCUV7HE","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":"55ecdfdeeb4b4cb5163c98a5662bdf430df8049fabce9a2481eec083606998bf","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by-nc-sa/4.0/","primary_cat":"cs.IR","submitted_at":"2023-05-01T11:56:22Z","title_canon_sha256":"73035b950b77d2cec0463a578235d8e4ffb76699cd68c2682c50df3c3d92155b"},"schema_version":"1.0","source":{"id":"2305.00783","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2305.00783","created_at":"2026-07-05T06:05:45Z"},{"alias_kind":"arxiv_version","alias_value":"2305.00783v1","created_at":"2026-07-05T06:05:45Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2305.00783","created_at":"2026-07-05T06:05:45Z"},{"alias_kind":"pith_short_12","alias_value":"NZ23JZE5VVQU","created_at":"2026-07-05T06:05:45Z"},{"alias_kind":"pith_short_16","alias_value":"NZ23JZE5VVQUZPYV","created_at":"2026-07-05T06:05:45Z"},{"alias_kind":"pith_short_8","alias_value":"NZ23JZE5","created_at":"2026-07-05T06:05:45Z"}],"graph_snapshots":[{"event_id":"sha256:b226e2c60ffe5f38aee1aa7421d5b50d38df5ac93b447623072203b998d90ef2","target":"graph","created_at":"2026-07-05T06:05:45Z","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/2305.00783/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Traditional recommender systems estimate user preference on items purely based on historical interaction records, thus failing to capture fine-grained yet dynamic user interests and letting users receive recommendation only passively. Recent conversational recommender systems (CRSs) tackle those limitations by enabling recommender systems to interact with the user to obtain her/his current preference through a sequence of clarifying questions. Despite the progress achieved in CRSs, existing solutions are far from satisfaction in the following two aspects: 1) current CRSs usually require each u","authors_text":"Hongzhi Yin, Lizhen Cui, Quoc Viet Hung Nguyen, Tong Chen, Xuhui Ren, Zi Huang","cross_cats":[],"headline":"","license":"http://creativecommons.org/licenses/by-nc-sa/4.0/","primary_cat":"cs.IR","submitted_at":"2023-05-01T11:56:22Z","title":"Explicit Knowledge Graph Reasoning for Conversational Recommendation"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2305.00783","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":"sha256:8fabfe708d3f054affe05f996e69b1c6171c6b56a8374aff7ab9edc5d1bdf5a2","target":"record","created_at":"2026-07-05T06:05:45Z","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":"55ecdfdeeb4b4cb5163c98a5662bdf430df8049fabce9a2481eec083606998bf","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by-nc-sa/4.0/","primary_cat":"cs.IR","submitted_at":"2023-05-01T11:56:22Z","title_canon_sha256":"73035b950b77d2cec0463a578235d8e4ffb76699cd68c2682c50df3c3d92155b"},"schema_version":"1.0","source":{"id":"2305.00783","kind":"arxiv","version":1}},"canonical_sha256":"6e75b4e49dad614cbf1523cb1152bf39187919e02db87e83baf641be8762c189","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"6e75b4e49dad614cbf1523cb1152bf39187919e02db87e83baf641be8762c189","first_computed_at":"2026-07-05T06:05:45.151832Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T06:05:45.151832Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"bsedom5hMDMsdj20vmEp5ftVfrKNXynzRWuA62QzAGo3eDL3Rq83rQCo+Eo/glY/zKe9X+owtCK1um8I09lBDQ==","signature_status":"signed_v1","signed_at":"2026-07-05T06:05:45.152235Z","signed_message":"canonical_sha256_bytes"},"source_id":"2305.00783","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:8fabfe708d3f054affe05f996e69b1c6171c6b56a8374aff7ab9edc5d1bdf5a2","sha256:b226e2c60ffe5f38aee1aa7421d5b50d38df5ac93b447623072203b998d90ef2"],"state_sha256":"9e1a18e445b1df37fb251ef011288c8747c1e91eb2dec0790676b07f18b5e531"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"PRi1ejtm79IBNECbFmR834bDNR4LzKJ+4CjKMgwlQISYSmGXBGd4alRfwN8Q3ZBwRYteYyklq2JKcYl70WWFAw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-05T03:19:09.291904Z","bundle_sha256":"90c263973e6f4c247ccd0fac14a2d719bbf46e54f29dbee3f388230c0cba0bd4"}}