{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2018:2FVAWAV3NXCKPOYDRKGHCVVMJM","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":"e8d99b83b473c4580fc75290386f71eae39a7a8c1bf8dace191ddbbc7ae8f964","cross_cats_sorted":["cs.AI","cs.DB"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.LO","submitted_at":"2018-04-19T16:57:25Z","title_canon_sha256":"18b25e9710346156e03949921754d4d23e832039b0d248f44e4d917750c3d53a"},"schema_version":"1.0","source":{"id":"1804.07274","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1804.07274","created_at":"2026-05-18T00:18:00Z"},{"alias_kind":"arxiv_version","alias_value":"1804.07274v1","created_at":"2026-05-18T00:18:00Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1804.07274","created_at":"2026-05-18T00:18:00Z"},{"alias_kind":"pith_short_12","alias_value":"2FVAWAV3NXCK","created_at":"2026-05-18T12:32:02Z"},{"alias_kind":"pith_short_16","alias_value":"2FVAWAV3NXCKPOYD","created_at":"2026-05-18T12:32:02Z"},{"alias_kind":"pith_short_8","alias_value":"2FVAWAV3","created_at":"2026-05-18T12:32:02Z"}],"graph_snapshots":[{"event_id":"sha256:19216541b91960667f1f697829fd47c138ab27a5484dd401ddc0b1815493c41a","target":"graph","created_at":"2026-05-18T00:18:00Z","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"},"paper":{"abstract_excerpt":"Conjunctive query answering over expressive Horn Description Logic ontologies is a relevant and challenging problem which, in some cases, can be addressed by application of the chase algorithm. In this paper, we define a novel acyclicity notion which provides a sufficient condition for termination of the restricted chase over Horn-SRIQ TBoxes. We show that this notion generalizes most of the existing acyclicity conditions (both theoretically and empirically). Furthermore, this new acyclicity notion gives rise to a very efficient reasoning procedure. We provide evidence for this by providing a ","authors_text":"Cristina Feier, David Carral, Pascal Hitzler","cross_cats":["cs.AI","cs.DB"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.LO","submitted_at":"2018-04-19T16:57:25Z","title":"A Practical Acyclicity Notion for Query Answering over Horn-SRIQ Ontologies"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1804.07274","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":"sha256:4bd30940483dfe9f70f04b9b7bbba6d47f100024a87023c4b8e413ec1e05b970","target":"record","created_at":"2026-05-18T00:18:00Z","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":"e8d99b83b473c4580fc75290386f71eae39a7a8c1bf8dace191ddbbc7ae8f964","cross_cats_sorted":["cs.AI","cs.DB"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.LO","submitted_at":"2018-04-19T16:57:25Z","title_canon_sha256":"18b25e9710346156e03949921754d4d23e832039b0d248f44e4d917750c3d53a"},"schema_version":"1.0","source":{"id":"1804.07274","kind":"arxiv","version":1}},"canonical_sha256":"d16a0b02bb6dc4a7bb038a8c7156ac4b19f0e39491082f997607c4b0ee88b2e0","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"d16a0b02bb6dc4a7bb038a8c7156ac4b19f0e39491082f997607c4b0ee88b2e0","first_computed_at":"2026-05-18T00:18:00.819966Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:18:00.819966Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"0tyOXvomDol+y6yv+InczODXnB+ucg+/OvG0i6qYzWJbc8oy4qDKDm3HRXN01BnsVtWM4UYfbf1i/U+jayoQDA==","signature_status":"signed_v1","signed_at":"2026-05-18T00:18:00.820691Z","signed_message":"canonical_sha256_bytes"},"source_id":"1804.07274","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:4bd30940483dfe9f70f04b9b7bbba6d47f100024a87023c4b8e413ec1e05b970","sha256:19216541b91960667f1f697829fd47c138ab27a5484dd401ddc0b1815493c41a"],"state_sha256":"57d3533187ba2f32c669b4a04d312c1cb1526396a12d05e1be4f4cbcf35ac0c7"}