{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2012:ERYXEWLHQRVGCB32KXB3XGRUUN","short_pith_number":"pith:ERYXEWLH","canonical_record":{"source":{"id":"1207.2847","kind":"arxiv","version":3},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.DC","submitted_at":"2012-07-12T05:27:16Z","cross_cats_sorted":["cs.DS"],"title_canon_sha256":"ed01605e8dc1274e0f7a259736eb967c97008a40ee47177548be3d50fbe2d373","abstract_canon_sha256":"21b839ca938396f46f69372a4f6139cbb026927c076e067124e8e0cbd977a140"},"schema_version":"1.0"},"canonical_sha256":"2471725967846a61077a55c3bb9a34a36cb58e304596c45c26f86ad4098f4992","source":{"kind":"arxiv","id":"1207.2847","version":3},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1207.2847","created_at":"2026-05-18T00:59:05Z"},{"alias_kind":"arxiv_version","alias_value":"1207.2847v3","created_at":"2026-05-18T00:59:05Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1207.2847","created_at":"2026-05-18T00:59:05Z"},{"alias_kind":"pith_short_12","alias_value":"ERYXEWLHQRVG","created_at":"2026-05-18T12:27:04Z"},{"alias_kind":"pith_short_16","alias_value":"ERYXEWLHQRVGCB32","created_at":"2026-05-18T12:27:04Z"},{"alias_kind":"pith_short_8","alias_value":"ERYXEWLH","created_at":"2026-05-18T12:27:04Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2012:ERYXEWLHQRVGCB32KXB3XGRUUN","target":"record","payload":{"canonical_record":{"source":{"id":"1207.2847","kind":"arxiv","version":3},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.DC","submitted_at":"2012-07-12T05:27:16Z","cross_cats_sorted":["cs.DS"],"title_canon_sha256":"ed01605e8dc1274e0f7a259736eb967c97008a40ee47177548be3d50fbe2d373","abstract_canon_sha256":"21b839ca938396f46f69372a4f6139cbb026927c076e067124e8e0cbd977a140"},"schema_version":"1.0"},"canonical_sha256":"2471725967846a61077a55c3bb9a34a36cb58e304596c45c26f86ad4098f4992","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:59:05.029509Z","signature_b64":"+EFy1qar2VSUtYB8WwO8lQf0MIdRsRDl1AXDflQGP52nmkFkqo8JBJYxFXq6u/BwZB1LfoVz+u0h6Uqz5Xz3Dw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"2471725967846a61077a55c3bb9a34a36cb58e304596c45c26f86ad4098f4992","last_reissued_at":"2026-05-18T00:59:05.028842Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:59:05.028842Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1207.2847","source_version":3,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T00:59:05Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"hsjjorfQYuhaLituJEmFn9GYzrajhwNg5X695YN6Y8j1PN782Qq7Z8O5OoKBx0+8PZkpMf0q8yZSgvEPEt60Dg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-12T00:35:13.951601Z"},"content_sha256":"a0a795620f296b4b325bc7cd25679a9819ab918cb260fea914035610448a2eda","schema_version":"1.0","event_id":"sha256:a0a795620f296b4b325bc7cd25679a9819ab918cb260fea914035610448a2eda"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2012:ERYXEWLHQRVGCB32KXB3XGRUUN","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Positioning Accuracy Improvement via Distributed Location Estimate in Cooperative Vehicular Networks","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cs.DS"],"primary_cat":"cs.DC","authors_text":"Hock Beng Lim, Kai Liu","submitted_at":"2012-07-12T05:27:16Z","abstract_excerpt":"The development of cooperative vehicle safety (CVS) applications, such as collision warnings, turning assistants, and speed advisories, etc., has received great attention in the past few years. Accurate vehicular localization is essential to enable these applications. In this study, motivated by the proliferation of the Global Positioning System (GPS) devices, and the increasing sophistication of wireless communication technologies in vehicular networks, we propose a distributed location estimate algorithm to improve the positioning accuracy via cooperative inter-vehicle distance measurement. "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1207.2847","kind":"arxiv","version":3},"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":"2026-05-18T00:59:05Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"7GuslVqahsjvLHtrjHFVy6juImlILm8UodsnLxaE7V8ZPOj4hacO2nZ7WuVy5wDmO6duNx+djuqPCR03VhD1Ag==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-12T00:35:13.951961Z"},"content_sha256":"d56f87bddacbae1b35b4ea8da727713f799d32eb05bbe742b3e68cba0195b26b","schema_version":"1.0","event_id":"sha256:d56f87bddacbae1b35b4ea8da727713f799d32eb05bbe742b3e68cba0195b26b"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/ERYXEWLHQRVGCB32KXB3XGRUUN/bundle.json","state_url":"https://pith.science/pith/ERYXEWLHQRVGCB32KXB3XGRUUN/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/ERYXEWLHQRVGCB32KXB3XGRUUN/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":"2026-06-12T00:35:13Z","links":{"resolver":"https://pith.science/pith/ERYXEWLHQRVGCB32KXB3XGRUUN","bundle":"https://pith.science/pith/ERYXEWLHQRVGCB32KXB3XGRUUN/bundle.json","state":"https://pith.science/pith/ERYXEWLHQRVGCB32KXB3XGRUUN/state.json","well_known_bundle":"https://pith.science/.well-known/pith/ERYXEWLHQRVGCB32KXB3XGRUUN/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2012:ERYXEWLHQRVGCB32KXB3XGRUUN","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":"21b839ca938396f46f69372a4f6139cbb026927c076e067124e8e0cbd977a140","cross_cats_sorted":["cs.DS"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.DC","submitted_at":"2012-07-12T05:27:16Z","title_canon_sha256":"ed01605e8dc1274e0f7a259736eb967c97008a40ee47177548be3d50fbe2d373"},"schema_version":"1.0","source":{"id":"1207.2847","kind":"arxiv","version":3}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1207.2847","created_at":"2026-05-18T00:59:05Z"},{"alias_kind":"arxiv_version","alias_value":"1207.2847v3","created_at":"2026-05-18T00:59:05Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1207.2847","created_at":"2026-05-18T00:59:05Z"},{"alias_kind":"pith_short_12","alias_value":"ERYXEWLHQRVG","created_at":"2026-05-18T12:27:04Z"},{"alias_kind":"pith_short_16","alias_value":"ERYXEWLHQRVGCB32","created_at":"2026-05-18T12:27:04Z"},{"alias_kind":"pith_short_8","alias_value":"ERYXEWLH","created_at":"2026-05-18T12:27:04Z"}],"graph_snapshots":[{"event_id":"sha256:d56f87bddacbae1b35b4ea8da727713f799d32eb05bbe742b3e68cba0195b26b","target":"graph","created_at":"2026-05-18T00:59:05Z","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":"The development of cooperative vehicle safety (CVS) applications, such as collision warnings, turning assistants, and speed advisories, etc., has received great attention in the past few years. Accurate vehicular localization is essential to enable these applications. In this study, motivated by the proliferation of the Global Positioning System (GPS) devices, and the increasing sophistication of wireless communication technologies in vehicular networks, we propose a distributed location estimate algorithm to improve the positioning accuracy via cooperative inter-vehicle distance measurement. ","authors_text":"Hock Beng Lim, Kai Liu","cross_cats":["cs.DS"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.DC","submitted_at":"2012-07-12T05:27:16Z","title":"Positioning Accuracy Improvement via Distributed Location Estimate in Cooperative Vehicular Networks"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1207.2847","kind":"arxiv","version":3},"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:a0a795620f296b4b325bc7cd25679a9819ab918cb260fea914035610448a2eda","target":"record","created_at":"2026-05-18T00:59:05Z","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":"21b839ca938396f46f69372a4f6139cbb026927c076e067124e8e0cbd977a140","cross_cats_sorted":["cs.DS"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.DC","submitted_at":"2012-07-12T05:27:16Z","title_canon_sha256":"ed01605e8dc1274e0f7a259736eb967c97008a40ee47177548be3d50fbe2d373"},"schema_version":"1.0","source":{"id":"1207.2847","kind":"arxiv","version":3}},"canonical_sha256":"2471725967846a61077a55c3bb9a34a36cb58e304596c45c26f86ad4098f4992","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"2471725967846a61077a55c3bb9a34a36cb58e304596c45c26f86ad4098f4992","first_computed_at":"2026-05-18T00:59:05.028842Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:59:05.028842Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"+EFy1qar2VSUtYB8WwO8lQf0MIdRsRDl1AXDflQGP52nmkFkqo8JBJYxFXq6u/BwZB1LfoVz+u0h6Uqz5Xz3Dw==","signature_status":"signed_v1","signed_at":"2026-05-18T00:59:05.029509Z","signed_message":"canonical_sha256_bytes"},"source_id":"1207.2847","source_kind":"arxiv","source_version":3}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:a0a795620f296b4b325bc7cd25679a9819ab918cb260fea914035610448a2eda","sha256:d56f87bddacbae1b35b4ea8da727713f799d32eb05bbe742b3e68cba0195b26b"],"state_sha256":"6ef47e07c67a791bbc4214214222056b55f0709c3e622a026ca7b81e18d0033f"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"MAlmqR/hl3JseEB47AeAe34efRvD9pS4BXBWAky+uG7TXOH87UGGT0X3Vx+B2nU/hxvjqHgr1uNeFZko+o0OAg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-12T00:35:13.954332Z","bundle_sha256":"8f7e4e6f87f12fdedc78abd4123bb02b128bc7c44664cde175f101835234ac1b"}}