{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2021:MJJ7OJDMNOVFMJ25KMEQ5P6OCG","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":"c64dd624f276d80a8b8c49da71b1495d1e9580f878ac01ea7ff3d7ff0c39b26f","cross_cats_sorted":["cs.SY"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"eess.SY","submitted_at":"2021-06-30T21:18:20Z","title_canon_sha256":"684086163ec6bcdae60c897358eb2a736a7da97b66c936b14d8ace4084607498"},"schema_version":"1.0","source":{"id":"2107.00105","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2107.00105","created_at":"2026-07-05T02:54:20Z"},{"alias_kind":"arxiv_version","alias_value":"2107.00105v1","created_at":"2026-07-05T02:54:20Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2107.00105","created_at":"2026-07-05T02:54:20Z"},{"alias_kind":"pith_short_12","alias_value":"MJJ7OJDMNOVF","created_at":"2026-07-05T02:54:20Z"},{"alias_kind":"pith_short_16","alias_value":"MJJ7OJDMNOVFMJ25","created_at":"2026-07-05T02:54:20Z"},{"alias_kind":"pith_short_8","alias_value":"MJJ7OJDM","created_at":"2026-07-05T02:54:20Z"}],"graph_snapshots":[{"event_id":"sha256:ac3295af83832c533ae302b23d475fa69c0397109480dc1101630aa1b3ecf982","target":"graph","created_at":"2026-07-05T02:54:20Z","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/2107.00105/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Public-transit systems face a number of operational challenges: (a) changing ridership patterns requiring optimization of fixed line services, (b) optimizing vehicle-to-trip assignments to reduce maintenance and operation codes, and (c) ensuring equitable and fair coverage to areas with low ridership. Optimizing these objectives presents a hard computational problem due to the size and complexity of the decision space. State-of-the-art methods formulate these problems as variants of the vehicle routing problem and use data-driven heuristics for optimizing the procedures. However, the evaluatio","authors_text":"Abhishek Dubey, Aron Laszka, Himanshu Neema, Joseph Severino, Juliette Ugirumurera, Philip Pugliese, Rongze Gui, Ruixiao Sun, Yuche Chen","cross_cats":["cs.SY"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"eess.SY","submitted_at":"2021-06-30T21:18:20Z","title":"Transit-Gym: A Simulation and Evaluation Engine for Analysis of Bus Transit Systems"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2107.00105","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":"sha256:5b5919ef41ad7e07d9c0e83485919bbb598261a41c01515f6f708a0c65ac4010","target":"record","created_at":"2026-07-05T02:54:20Z","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":"c64dd624f276d80a8b8c49da71b1495d1e9580f878ac01ea7ff3d7ff0c39b26f","cross_cats_sorted":["cs.SY"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"eess.SY","submitted_at":"2021-06-30T21:18:20Z","title_canon_sha256":"684086163ec6bcdae60c897358eb2a736a7da97b66c936b14d8ace4084607498"},"schema_version":"1.0","source":{"id":"2107.00105","kind":"arxiv","version":1}},"canonical_sha256":"6253f7246c6baa56275d53090ebfce11b0c2be91e8c7477e89f7d42cdd11de03","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"6253f7246c6baa56275d53090ebfce11b0c2be91e8c7477e89f7d42cdd11de03","first_computed_at":"2026-07-05T02:54:20.543833Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T02:54:20.543833Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"BcNRa9aP4UIYLYQ7n1mzp/nSC21cdFzmJweyjX9+/9d2V3BuAnAaxHehwGWMICs5kzHfFGR4WwnT/faFdM17BQ==","signature_status":"signed_v1","signed_at":"2026-07-05T02:54:20.544217Z","signed_message":"canonical_sha256_bytes"},"source_id":"2107.00105","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:5b5919ef41ad7e07d9c0e83485919bbb598261a41c01515f6f708a0c65ac4010","sha256:ac3295af83832c533ae302b23d475fa69c0397109480dc1101630aa1b3ecf982"],"state_sha256":"26891325ff489442e3b503b402313197a492cf5b1caf69e57a33513f0e64f1b8"}