{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2022:OESVGFGFKQFQBTWCESEFDUVAXX","short_pith_number":"pith:OESVGFGF","canonical_record":{"source":{"id":"2212.11362","kind":"arxiv","version":7},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cs.LO","submitted_at":"2022-12-21T20:59:14Z","cross_cats_sorted":[],"title_canon_sha256":"dfae757a10600d975f6ae95c4769d484769d2aa31c002bed2d0d9cb5f5e8ddf9","abstract_canon_sha256":"3b60d72123cfc67a85701c777882acc660a2ce44aaf4f235620fdc3e7a308510"},"schema_version":"1.0"},"canonical_sha256":"71255314c5540b00cec2248851d2a0bdcaa8fe4dd33b2c23da788b3991a34ecd","source":{"kind":"arxiv","id":"2212.11362","version":7},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2212.11362","created_at":"2026-05-20T01:04:47Z"},{"alias_kind":"arxiv_version","alias_value":"2212.11362v7","created_at":"2026-05-20T01:04:47Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2212.11362","created_at":"2026-05-20T01:04:47Z"},{"alias_kind":"pith_short_12","alias_value":"OESVGFGFKQFQ","created_at":"2026-05-20T01:04:47Z"},{"alias_kind":"pith_short_16","alias_value":"OESVGFGFKQFQBTWC","created_at":"2026-05-20T01:04:47Z"},{"alias_kind":"pith_short_8","alias_value":"OESVGFGF","created_at":"2026-05-20T01:04:47Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2022:OESVGFGFKQFQBTWCESEFDUVAXX","target":"record","payload":{"canonical_record":{"source":{"id":"2212.11362","kind":"arxiv","version":7},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cs.LO","submitted_at":"2022-12-21T20:59:14Z","cross_cats_sorted":[],"title_canon_sha256":"dfae757a10600d975f6ae95c4769d484769d2aa31c002bed2d0d9cb5f5e8ddf9","abstract_canon_sha256":"3b60d72123cfc67a85701c777882acc660a2ce44aaf4f235620fdc3e7a308510"},"schema_version":"1.0"},"canonical_sha256":"71255314c5540b00cec2248851d2a0bdcaa8fe4dd33b2c23da788b3991a34ecd","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-20T01:04:47.916332Z","signature_b64":"VG7E1p9fadfChTsQwGGHn8ybkpATCg0+6iRsJQnMzHAv+WGUEk7TfHUf0mbCT28nUI1gZ6KVm1qxduBPVfexAw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"71255314c5540b00cec2248851d2a0bdcaa8fe4dd33b2c23da788b3991a34ecd","last_reissued_at":"2026-05-20T01:04:47.915717Z","signature_status":"signed_v1","first_computed_at":"2026-05-20T01:04:47.915717Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2212.11362","source_version":7,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-20T01:04:47Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"QGlHwn4VoZbVMrcJSk3huNFjveO2Ag7gA0kcCPpnqrY7Ki2B0Y65+BwhOwwvm7TUZFQwu8TZYyuD6ujtbd8/Ag==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-25T21:25:11.361298Z"},"content_sha256":"7f7e75b7378010949ed192c7feeda977768545229c5cbbe0f60b4a0c267ba11f","schema_version":"1.0","event_id":"sha256:7f7e75b7378010949ed192c7feeda977768545229c5cbbe0f60b4a0c267ba11f"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2022:OESVGFGFKQFQBTWCESEFDUVAXX","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Tighter Bounds for Query Answering with Guarded TGDs","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":[],"primary_cat":"cs.LO","authors_text":"Antoine Amarilli, Michael Benedikt","submitted_at":"2022-12-21T20:59:14Z","abstract_excerpt":"We consider the complexity of the open-world query answering problem, where we wish to determine certain answers to conjunctive queries over incomplete datasets specified by an initial set of facts and a set of guarded TGDs. This problem has been well-studied in the literature and is decidable but with a high complexity, namely, it is 2EXPTIME complete. Further, the complexity shrinks by one exponential when the arity is fixed.\n  We show in this paper how we can obtain better complexity bounds when considering separately the arity of the guard atom and that of the additional atoms, called the "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2212.11362","kind":"arxiv","version":7},"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/2212.11362/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":"2026-05-20T01:04:47Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"XpWWNBSCzJp6T48jmH+qOAW4knL6r/PLN+pg7UgoIKpaWUaKSBieDKXdKDY4wRcCWn4IoeFSSP3zk9W0HpHkDw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-25T21:25:11.362075Z"},"content_sha256":"eefa60ee89a71fbecf7a606ea114ef5cc108e500e2616a15a0e742656ff9cbbf","schema_version":"1.0","event_id":"sha256:eefa60ee89a71fbecf7a606ea114ef5cc108e500e2616a15a0e742656ff9cbbf"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/OESVGFGFKQFQBTWCESEFDUVAXX/bundle.json","state_url":"https://pith.science/pith/OESVGFGFKQFQBTWCESEFDUVAXX/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/OESVGFGFKQFQBTWCESEFDUVAXX/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":"2026-05-25T21:25:11Z","links":{"resolver":"https://pith.science/pith/OESVGFGFKQFQBTWCESEFDUVAXX","bundle":"https://pith.science/pith/OESVGFGFKQFQBTWCESEFDUVAXX/bundle.json","state":"https://pith.science/pith/OESVGFGFKQFQBTWCESEFDUVAXX/state.json","well_known_bundle":"https://pith.science/.well-known/pith/OESVGFGFKQFQBTWCESEFDUVAXX/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2022:OESVGFGFKQFQBTWCESEFDUVAXX","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":"3b60d72123cfc67a85701c777882acc660a2ce44aaf4f235620fdc3e7a308510","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cs.LO","submitted_at":"2022-12-21T20:59:14Z","title_canon_sha256":"dfae757a10600d975f6ae95c4769d484769d2aa31c002bed2d0d9cb5f5e8ddf9"},"schema_version":"1.0","source":{"id":"2212.11362","kind":"arxiv","version":7}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2212.11362","created_at":"2026-05-20T01:04:47Z"},{"alias_kind":"arxiv_version","alias_value":"2212.11362v7","created_at":"2026-05-20T01:04:47Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2212.11362","created_at":"2026-05-20T01:04:47Z"},{"alias_kind":"pith_short_12","alias_value":"OESVGFGFKQFQ","created_at":"2026-05-20T01:04:47Z"},{"alias_kind":"pith_short_16","alias_value":"OESVGFGFKQFQBTWC","created_at":"2026-05-20T01:04:47Z"},{"alias_kind":"pith_short_8","alias_value":"OESVGFGF","created_at":"2026-05-20T01:04:47Z"}],"graph_snapshots":[{"event_id":"sha256:eefa60ee89a71fbecf7a606ea114ef5cc108e500e2616a15a0e742656ff9cbbf","target":"graph","created_at":"2026-05-20T01:04:47Z","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/2212.11362/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"We consider the complexity of the open-world query answering problem, where we wish to determine certain answers to conjunctive queries over incomplete datasets specified by an initial set of facts and a set of guarded TGDs. This problem has been well-studied in the literature and is decidable but with a high complexity, namely, it is 2EXPTIME complete. Further, the complexity shrinks by one exponential when the arity is fixed.\n  We show in this paper how we can obtain better complexity bounds when considering separately the arity of the guard atom and that of the additional atoms, called the ","authors_text":"Antoine Amarilli, Michael Benedikt","cross_cats":[],"headline":"","license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cs.LO","submitted_at":"2022-12-21T20:59:14Z","title":"Tighter Bounds for Query Answering with Guarded TGDs"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2212.11362","kind":"arxiv","version":7},"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":"sha256:7f7e75b7378010949ed192c7feeda977768545229c5cbbe0f60b4a0c267ba11f","target":"record","created_at":"2026-05-20T01:04:47Z","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":"3b60d72123cfc67a85701c777882acc660a2ce44aaf4f235620fdc3e7a308510","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cs.LO","submitted_at":"2022-12-21T20:59:14Z","title_canon_sha256":"dfae757a10600d975f6ae95c4769d484769d2aa31c002bed2d0d9cb5f5e8ddf9"},"schema_version":"1.0","source":{"id":"2212.11362","kind":"arxiv","version":7}},"canonical_sha256":"71255314c5540b00cec2248851d2a0bdcaa8fe4dd33b2c23da788b3991a34ecd","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"71255314c5540b00cec2248851d2a0bdcaa8fe4dd33b2c23da788b3991a34ecd","first_computed_at":"2026-05-20T01:04:47.915717Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-20T01:04:47.915717Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"VG7E1p9fadfChTsQwGGHn8ybkpATCg0+6iRsJQnMzHAv+WGUEk7TfHUf0mbCT28nUI1gZ6KVm1qxduBPVfexAw==","signature_status":"signed_v1","signed_at":"2026-05-20T01:04:47.916332Z","signed_message":"canonical_sha256_bytes"},"source_id":"2212.11362","source_kind":"arxiv","source_version":7}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:7f7e75b7378010949ed192c7feeda977768545229c5cbbe0f60b4a0c267ba11f","sha256:eefa60ee89a71fbecf7a606ea114ef5cc108e500e2616a15a0e742656ff9cbbf"],"state_sha256":"4a97548f75c38cde81c8b685a987847f29583f15fda1ae3196a42b0dad44c0ed"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"7GNKzXY1A2UVi1a0rkWhryzBybeGAbdVcGtBX+S/kUpeyBa7krZtJxLkNxJfQZjP6W7eVIWEmtI27/CG5LzvAQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-25T21:25:11.365670Z","bundle_sha256":"9213faf7af37a76307334a1be21941ccaa2e8fc8fe9b956daa15522cbabcb599"}}