{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2018:A2DRPO6NCXZXLJVENWO2OP7M5F","short_pith_number":"pith:A2DRPO6N","canonical_record":{"source":{"id":"1811.06395","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.RO","submitted_at":"2018-11-11T18:40:52Z","cross_cats_sorted":["cs.AI"],"title_canon_sha256":"69eda2b89408c5ca1df3c04139c8a5f9e18a7700af19e3105d48a49634d336f3","abstract_canon_sha256":"0b6763d0d23cf1c56eb81dc5e12662ec669fe590aa508b00f7c800497c0ca6fb"},"schema_version":"1.0"},"canonical_sha256":"068717bbcd15f375a6a46d9da73fece95db9e9e28169f9e61d6483408e22dcf8","source":{"kind":"arxiv","id":"1811.06395","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1811.06395","created_at":"2026-05-18T00:00:37Z"},{"alias_kind":"arxiv_version","alias_value":"1811.06395v1","created_at":"2026-05-18T00:00:37Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1811.06395","created_at":"2026-05-18T00:00:37Z"},{"alias_kind":"pith_short_12","alias_value":"A2DRPO6NCXZX","created_at":"2026-05-18T12:32:13Z"},{"alias_kind":"pith_short_16","alias_value":"A2DRPO6NCXZXLJVE","created_at":"2026-05-18T12:32:13Z"},{"alias_kind":"pith_short_8","alias_value":"A2DRPO6N","created_at":"2026-05-18T12:32:13Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2018:A2DRPO6NCXZXLJVENWO2OP7M5F","target":"record","payload":{"canonical_record":{"source":{"id":"1811.06395","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.RO","submitted_at":"2018-11-11T18:40:52Z","cross_cats_sorted":["cs.AI"],"title_canon_sha256":"69eda2b89408c5ca1df3c04139c8a5f9e18a7700af19e3105d48a49634d336f3","abstract_canon_sha256":"0b6763d0d23cf1c56eb81dc5e12662ec669fe590aa508b00f7c800497c0ca6fb"},"schema_version":"1.0"},"canonical_sha256":"068717bbcd15f375a6a46d9da73fece95db9e9e28169f9e61d6483408e22dcf8","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:00:37.823838Z","signature_b64":"FJv8OMOtQ4K9HIMnx/gcuPX6w26UE87lSE4AnszIzn0u3vWtKqapP3CgBiuWOrB6uk1o2/JrbM2lOTmMg1dMAg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"068717bbcd15f375a6a46d9da73fece95db9e9e28169f9e61d6483408e22dcf8","last_reissued_at":"2026-05-18T00:00:37.823393Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:00:37.823393Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1811.06395","source_version":1,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T00:00:37Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"BZYOH7SJzJRj83IAo1S/dnoU6Dspw6aDtPzHCyq4olQBb02ZDZ1SjCGLWQxN019pSQ1tO9k9fl1VCS7+LfoOCw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-01T13:12:53.590237Z"},"content_sha256":"3fed75086693c7e097334e492983b6a3be7ed9d121646cd08ad5b88b50f301f0","schema_version":"1.0","event_id":"sha256:3fed75086693c7e097334e492983b6a3be7ed9d121646cd08ad5b88b50f301f0"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2018:A2DRPO6NCXZXLJVENWO2OP7M5F","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Modeling car-following behavior on urban expressways in Shanghai: A naturalistic driving study","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cs.AI"],"primary_cat":"cs.RO","authors_text":"Andrew P. Tarko, Meixin Zhu, Shou'en Fang, Xuesong Wang","submitted_at":"2018-11-11T18:40:52Z","abstract_excerpt":"Five car-following models were calibrated, validated and cross-compared. The intelligent driver model performed best among the evaluated models. Considerable behavioral differences between different drivers were found. Calibrated model parameters may not be numerically equivalent with observed ones."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1811.06395","kind":"arxiv","version":1},"verdict":{"id":null,"model_set":{},"created_at":null,"strongest_claim":"","one_line_summary":"","pipeline_version":null,"weakest_assumption":"","pith_extraction_headline":""},"references":{"count":0,"sample":[],"resolved_work":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","internal_anchors":0},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"author_claims":{"count":0,"strong_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"builder_version":"pith-number-builder-2026-05-17-v1"},"verdict_id":null},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T00:00:37Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"JImojdkws92pfadtzQbaSZv3Q1gCpc3Ap9DOpBrkbu5WlDiuKNZc9F0ewfl5Hs7mEDdfz3JdJyN1c6588H+YBQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-01T13:12:53.590602Z"},"content_sha256":"8e9fc24615c106ac0ceb9aae21adb203b0ed1c91fcabf6cfa4bf6e6d43f9efb7","schema_version":"1.0","event_id":"sha256:8e9fc24615c106ac0ceb9aae21adb203b0ed1c91fcabf6cfa4bf6e6d43f9efb7"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/A2DRPO6NCXZXLJVENWO2OP7M5F/bundle.json","state_url":"https://pith.science/pith/A2DRPO6NCXZXLJVENWO2OP7M5F/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/A2DRPO6NCXZXLJVENWO2OP7M5F/bundle.json","status":"primary"}],"public_keys":[{"key_id":"pith-v1-2026-05","algorithm":"ed25519","format":"raw","public_key_b64":"stVStoiQhXFxp4s2pdzPNoqVNBMojDU/fJ2db5S3CbM=","public_key_hex":"b2d552b68890857171a78b36a5dccf368a953413288c353f7c9d9d6f94b709b3","fingerprint_sha256_b32_first128bits":"RVFV5Z2OI2J3ZUO7ERDEBCYNKS","fingerprint_sha256_hex":"8d4b5ee74e4693bcd1df2446408b0d54","rotates_at":null,"url":"https://pith.science/pith-signing-key.json","notes":"Pith uses this Ed25519 key to sign canonical record SHA-256 digests. Verify with: ed25519_verify(public_key, message=canonical_sha256_bytes, signature=base64decode(signature_b64))."}],"merge_version":"pith-open-graph-merge-v1","built_at":"2026-06-01T13:12:53Z","links":{"resolver":"https://pith.science/pith/A2DRPO6NCXZXLJVENWO2OP7M5F","bundle":"https://pith.science/pith/A2DRPO6NCXZXLJVENWO2OP7M5F/bundle.json","state":"https://pith.science/pith/A2DRPO6NCXZXLJVENWO2OP7M5F/state.json","well_known_bundle":"https://pith.science/.well-known/pith/A2DRPO6NCXZXLJVENWO2OP7M5F/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2018:A2DRPO6NCXZXLJVENWO2OP7M5F","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":"0b6763d0d23cf1c56eb81dc5e12662ec669fe590aa508b00f7c800497c0ca6fb","cross_cats_sorted":["cs.AI"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.RO","submitted_at":"2018-11-11T18:40:52Z","title_canon_sha256":"69eda2b89408c5ca1df3c04139c8a5f9e18a7700af19e3105d48a49634d336f3"},"schema_version":"1.0","source":{"id":"1811.06395","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1811.06395","created_at":"2026-05-18T00:00:37Z"},{"alias_kind":"arxiv_version","alias_value":"1811.06395v1","created_at":"2026-05-18T00:00:37Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1811.06395","created_at":"2026-05-18T00:00:37Z"},{"alias_kind":"pith_short_12","alias_value":"A2DRPO6NCXZX","created_at":"2026-05-18T12:32:13Z"},{"alias_kind":"pith_short_16","alias_value":"A2DRPO6NCXZXLJVE","created_at":"2026-05-18T12:32:13Z"},{"alias_kind":"pith_short_8","alias_value":"A2DRPO6N","created_at":"2026-05-18T12:32:13Z"}],"graph_snapshots":[{"event_id":"sha256:8e9fc24615c106ac0ceb9aae21adb203b0ed1c91fcabf6cfa4bf6e6d43f9efb7","target":"graph","created_at":"2026-05-18T00:00:37Z","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":"Five car-following models were calibrated, validated and cross-compared. The intelligent driver model performed best among the evaluated models. Considerable behavioral differences between different drivers were found. Calibrated model parameters may not be numerically equivalent with observed ones.","authors_text":"Andrew P. Tarko, Meixin Zhu, Shou'en Fang, Xuesong Wang","cross_cats":["cs.AI"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.RO","submitted_at":"2018-11-11T18:40:52Z","title":"Modeling car-following behavior on urban expressways in Shanghai: A naturalistic driving study"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1811.06395","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":"sha256:3fed75086693c7e097334e492983b6a3be7ed9d121646cd08ad5b88b50f301f0","target":"record","created_at":"2026-05-18T00:00:37Z","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":"0b6763d0d23cf1c56eb81dc5e12662ec669fe590aa508b00f7c800497c0ca6fb","cross_cats_sorted":["cs.AI"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.RO","submitted_at":"2018-11-11T18:40:52Z","title_canon_sha256":"69eda2b89408c5ca1df3c04139c8a5f9e18a7700af19e3105d48a49634d336f3"},"schema_version":"1.0","source":{"id":"1811.06395","kind":"arxiv","version":1}},"canonical_sha256":"068717bbcd15f375a6a46d9da73fece95db9e9e28169f9e61d6483408e22dcf8","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"068717bbcd15f375a6a46d9da73fece95db9e9e28169f9e61d6483408e22dcf8","first_computed_at":"2026-05-18T00:00:37.823393Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:00:37.823393Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"FJv8OMOtQ4K9HIMnx/gcuPX6w26UE87lSE4AnszIzn0u3vWtKqapP3CgBiuWOrB6uk1o2/JrbM2lOTmMg1dMAg==","signature_status":"signed_v1","signed_at":"2026-05-18T00:00:37.823838Z","signed_message":"canonical_sha256_bytes"},"source_id":"1811.06395","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:3fed75086693c7e097334e492983b6a3be7ed9d121646cd08ad5b88b50f301f0","sha256:8e9fc24615c106ac0ceb9aae21adb203b0ed1c91fcabf6cfa4bf6e6d43f9efb7"],"state_sha256":"2081d817147b51548d473e6bdeab5081811ee1e40c3b93fbd1e18780f7735c1e"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"XEYAMH7Cu6eTa3w31u4B1HLDTfE1CP48SvARpXyaYzs7u+mQCukgcKV5O5X++zK6dynJN3esW2NydL4gHGDoAg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-01T13:12:53.592834Z","bundle_sha256":"f79ff91d3f1fa58c198bbc5c4628902bff9b12099db3b3f9b3f8b6dfbd8ca690"}}