{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2018:FRSOTKQJ4IRL6JKSQ6TIUDK6FF","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":"4d499530554a18615638d922a83a1888c403e754021a3cffeac26e2d7119fd5f","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.SY","submitted_at":"2018-06-04T12:42:14Z","title_canon_sha256":"e7f427dfe107f222d12c9fdf31d5cf73326cdb84130c3351943f2b4811427e57"},"schema_version":"1.0","source":{"id":"1806.01074","kind":"arxiv","version":4}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1806.01074","created_at":"2026-05-17T23:54:59Z"},{"alias_kind":"arxiv_version","alias_value":"1806.01074v4","created_at":"2026-05-17T23:54:59Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1806.01074","created_at":"2026-05-17T23:54:59Z"},{"alias_kind":"pith_short_12","alias_value":"FRSOTKQJ4IRL","created_at":"2026-05-18T12:32:25Z"},{"alias_kind":"pith_short_16","alias_value":"FRSOTKQJ4IRL6JKS","created_at":"2026-05-18T12:32:25Z"},{"alias_kind":"pith_short_8","alias_value":"FRSOTKQJ","created_at":"2026-05-18T12:32:25Z"}],"graph_snapshots":[{"event_id":"sha256:ff30cf4881fea5dc64a7c2cc3cbc5562711da0181fabf5e44ba5d6773e3ebe83","target":"graph","created_at":"2026-05-17T23:54:59Z","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"},"paper":{"abstract_excerpt":"Power system security assessment methods require large datasets of operating points to train or test their performance. As historical data often contain limited number of abnormal situations, simulation data are necessary to accurately determine the security boundary. Generating such a database is an extremely demanding task, which becomes intractable even for small system sizes. This paper proposes a modular and highly scalable algorithm for computationally efficient database generation. Using convex relaxation techniques and complex network theory, we discard large infeasible regions and dra","authors_text":"Andreas Venzke, Florian Thams, Robert Eriksson, Spyros Chatzivasileiadis","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.SY","submitted_at":"2018-06-04T12:42:14Z","title":"Efficient Database Generation for Data-driven Security Assessment of Power Systems"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1806.01074","kind":"arxiv","version":4},"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":"sha256:3a03183fd89476116e130447b04ef7083a2ee3f3ed73573450a42cb97ae7a0a2","target":"record","created_at":"2026-05-17T23:54:59Z","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":"4d499530554a18615638d922a83a1888c403e754021a3cffeac26e2d7119fd5f","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.SY","submitted_at":"2018-06-04T12:42:14Z","title_canon_sha256":"e7f427dfe107f222d12c9fdf31d5cf73326cdb84130c3351943f2b4811427e57"},"schema_version":"1.0","source":{"id":"1806.01074","kind":"arxiv","version":4}},"canonical_sha256":"2c64e9aa09e222bf255287a68a0d5e294e05a5fcfc6b446d954104c64921eab4","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"2c64e9aa09e222bf255287a68a0d5e294e05a5fcfc6b446d954104c64921eab4","first_computed_at":"2026-05-17T23:54:59.144943Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-17T23:54:59.144943Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"yAmjL99pig5VUfWt5bUPHzVKHzUwJVJ+EeCzGzvnT3UoZg3/Q7cfnXNzthf325kyW0rJqDUHqYU0ztcqo49yAA==","signature_status":"signed_v1","signed_at":"2026-05-17T23:54:59.145442Z","signed_message":"canonical_sha256_bytes"},"source_id":"1806.01074","source_kind":"arxiv","source_version":4}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:3a03183fd89476116e130447b04ef7083a2ee3f3ed73573450a42cb97ae7a0a2","sha256:ff30cf4881fea5dc64a7c2cc3cbc5562711da0181fabf5e44ba5d6773e3ebe83"],"state_sha256":"d2840b898f2504a5fc30c7b610115ba587534b32f4125b2e276a929e4506ce00"}