{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2019:IURN5POJ26OPLHTGWB5VW3YACH","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":"65b08246c599b5ffe864c8da436398aed3dd5898d9fc497e89270213a3e65513","cross_cats_sorted":["cs.LG"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"stat.ML","submitted_at":"2019-08-07T03:04:38Z","title_canon_sha256":"9a777e883a9f80c0c0f04ed96b33657114ae8e1329ad242f05d933b305b24ed2"},"schema_version":"1.0","source":{"id":"1908.02427","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1908.02427","created_at":"2026-07-04T23:52:08Z"},{"alias_kind":"arxiv_version","alias_value":"1908.02427v1","created_at":"2026-07-04T23:52:08Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1908.02427","created_at":"2026-07-04T23:52:08Z"},{"alias_kind":"pith_short_12","alias_value":"IURN5POJ26OP","created_at":"2026-07-04T23:52:08Z"},{"alias_kind":"pith_short_16","alias_value":"IURN5POJ26OPLHTG","created_at":"2026-07-04T23:52:08Z"},{"alias_kind":"pith_short_8","alias_value":"IURN5POJ","created_at":"2026-07-04T23:52:08Z"}],"graph_snapshots":[{"event_id":"sha256:57462ae71dcb86785a4df33e84b2fb206d4a0fb3e31a846c163eb813b3aa1da1","target":"graph","created_at":"2026-07-04T23:52:08Z","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/1908.02427/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Compute and memory constraints have historically prevented traffic simulation software users from fully utilizing the predictive models underlying them. When calibrating car-following models, particularly, accommodations have included 1) using sensitivity analysis to limit the number of parameters to be calibrated, and 2) identifying only one set of parameter values using data collected from multiple car-following instances across multiple drivers. Shortcuts are further motivated by insufficient data set sizes, for which a driver may have too few instances to fully account for the variation in","authors_text":"Andrew Berthaume, Franklin Abodo, Leonardo Bobadilla, Stephen Zitzow-Childs","cross_cats":["cs.LG"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"stat.ML","submitted_at":"2019-08-07T03:04:38Z","title":"Strengthening the Case for a Bayesian Approach to Car-following Model Calibration and Validation using Probabilistic Programming"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1908.02427","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":"sha256:4bc3f8fd358970863f86109c68381b2dce2b693789ecf30f992fcd7c36dfb87a","target":"record","created_at":"2026-07-04T23:52:08Z","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":"65b08246c599b5ffe864c8da436398aed3dd5898d9fc497e89270213a3e65513","cross_cats_sorted":["cs.LG"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"stat.ML","submitted_at":"2019-08-07T03:04:38Z","title_canon_sha256":"9a777e883a9f80c0c0f04ed96b33657114ae8e1329ad242f05d933b305b24ed2"},"schema_version":"1.0","source":{"id":"1908.02427","kind":"arxiv","version":1}},"canonical_sha256":"4522debdc9d79cf59e66b07b5b6f0011d9b3aaf9786b7193cf3a7d1b1c1af293","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"4522debdc9d79cf59e66b07b5b6f0011d9b3aaf9786b7193cf3a7d1b1c1af293","first_computed_at":"2026-07-04T23:52:08.841595Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-04T23:52:08.841595Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"p+52oUOKWLUggXbJTg0qM0uI4i9sM+gs/TwPOW3RCtm7zUUiE5jv2lVJDaEIFjyrq9ul2PuMOUIlvMYKCNGWCg==","signature_status":"signed_v1","signed_at":"2026-07-04T23:52:08.842073Z","signed_message":"canonical_sha256_bytes"},"source_id":"1908.02427","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:4bc3f8fd358970863f86109c68381b2dce2b693789ecf30f992fcd7c36dfb87a","sha256:57462ae71dcb86785a4df33e84b2fb206d4a0fb3e31a846c163eb813b3aa1da1"],"state_sha256":"a0e95b5e561f7c7a65c2f23f1f2a45b4659dcaba93f110b70f662f6f3a45f7bf"}