{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2023:RFZFDMUHAMX6N5MFZWAVAH6HMC","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":"d2d28926a866862ffea0016f07a63340d92e61afb13ce328052d56f40d8789da","cross_cats_sorted":["stat.AP"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.LG","submitted_at":"2023-03-04T03:59:17Z","title_canon_sha256":"8dd87ca685108296bb054edf1828c76de1d66d976cdd9b21353b24a367e1fffa"},"schema_version":"1.0","source":{"id":"2303.02311","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2303.02311","created_at":"2026-07-05T08:03:25Z"},{"alias_kind":"arxiv_version","alias_value":"2303.02311v2","created_at":"2026-07-05T08:03:25Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2303.02311","created_at":"2026-07-05T08:03:25Z"},{"alias_kind":"pith_short_12","alias_value":"RFZFDMUHAMX6","created_at":"2026-07-05T08:03:25Z"},{"alias_kind":"pith_short_16","alias_value":"RFZFDMUHAMX6N5MF","created_at":"2026-07-05T08:03:25Z"},{"alias_kind":"pith_short_8","alias_value":"RFZFDMUH","created_at":"2026-07-05T08:03:25Z"}],"graph_snapshots":[{"event_id":"sha256:b45c0ef793a8d4a8d2f5af8d94a1ad8ee53dff5b87fc8fd5966678d7e788b350","target":"graph","created_at":"2026-07-05T08:03:25Z","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/2303.02311/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Accurately monitoring road traffic state is crucial for various applications, including travel time prediction, traffic control, and traffic safety. However, the lack of sensors often results in incomplete traffic state data, making it challenging to obtain reliable information for decision-making. This paper proposes a novel method for imputing traffic state data using Gaussian processes (GP) to address this issue. We propose a kernel rotation re-parametrization scheme that transforms a standard isotropic GP kernel into an anisotropic kernel, which can better model the congestion propagation ","authors_text":"Fan Wu, Huiyu Chen, Lijun Sun, Tony Z. Qiu, Zhanhong Cheng","cross_cats":["stat.AP"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.LG","submitted_at":"2023-03-04T03:59:17Z","title":"Traffic State Estimation from Vehicle Trajectories with Anisotropic Gaussian Processes"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2303.02311","kind":"arxiv","version":2},"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":"sha256:1437025dc59f8b7c09efa87ca8cbda762072b646892057360d1f507550f8aa5f","target":"record","created_at":"2026-07-05T08:03:25Z","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":"d2d28926a866862ffea0016f07a63340d92e61afb13ce328052d56f40d8789da","cross_cats_sorted":["stat.AP"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.LG","submitted_at":"2023-03-04T03:59:17Z","title_canon_sha256":"8dd87ca685108296bb054edf1828c76de1d66d976cdd9b21353b24a367e1fffa"},"schema_version":"1.0","source":{"id":"2303.02311","kind":"arxiv","version":2}},"canonical_sha256":"897251b287032fe6f585cd81501fc760b3c7d547b97de58b36cb3d12587fd3c3","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"897251b287032fe6f585cd81501fc760b3c7d547b97de58b36cb3d12587fd3c3","first_computed_at":"2026-07-05T08:03:25.358777Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T08:03:25.358777Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"62jeLnOMXzwvKT8TdUXawpNEZYlucsiRVR26GCp+ohN0sEGb6LaYDivQuHNyoAGQPSQOzhfXPQm250HKFSzEBQ==","signature_status":"signed_v1","signed_at":"2026-07-05T08:03:25.359257Z","signed_message":"canonical_sha256_bytes"},"source_id":"2303.02311","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:1437025dc59f8b7c09efa87ca8cbda762072b646892057360d1f507550f8aa5f","sha256:b45c0ef793a8d4a8d2f5af8d94a1ad8ee53dff5b87fc8fd5966678d7e788b350"],"state_sha256":"2d22406c12e4438c89002368206bad5a8b03a3230a3d9b37e26ae5264ed9a715"}