{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2024:7Y2XUYPOIYYQ4VBGNQN2OMHCVA","short_pith_number":"pith:7Y2XUYPO","canonical_record":{"source":{"id":"2405.03409","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by-nc-sa/4.0/","primary_cat":"cs.LG","submitted_at":"2024-05-06T12:20:55Z","cross_cats_sorted":[],"title_canon_sha256":"5b88cf474db65869dabfa8601c1c67df5fef7044097bc70b48587a4a8900596b","abstract_canon_sha256":"6e0362e4810f5fb85e60425a19b187a35a6f804c19c86a9617c0041cce57c917"},"schema_version":"1.0"},"canonical_sha256":"fe357a61ee46310e54266c1ba730e2a8194532c28e9d9aec9f92131a82d5a160","source":{"kind":"arxiv","id":"2405.03409","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2405.03409","created_at":"2026-07-05T08:16:02Z"},{"alias_kind":"arxiv_version","alias_value":"2405.03409v1","created_at":"2026-07-05T08:16:02Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2405.03409","created_at":"2026-07-05T08:16:02Z"},{"alias_kind":"pith_short_12","alias_value":"7Y2XUYPOIYYQ","created_at":"2026-07-05T08:16:02Z"},{"alias_kind":"pith_short_16","alias_value":"7Y2XUYPOIYYQ4VBG","created_at":"2026-07-05T08:16:02Z"},{"alias_kind":"pith_short_8","alias_value":"7Y2XUYPO","created_at":"2026-07-05T08:16:02Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2024:7Y2XUYPOIYYQ4VBGNQN2OMHCVA","target":"record","payload":{"canonical_record":{"source":{"id":"2405.03409","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by-nc-sa/4.0/","primary_cat":"cs.LG","submitted_at":"2024-05-06T12:20:55Z","cross_cats_sorted":[],"title_canon_sha256":"5b88cf474db65869dabfa8601c1c67df5fef7044097bc70b48587a4a8900596b","abstract_canon_sha256":"6e0362e4810f5fb85e60425a19b187a35a6f804c19c86a9617c0041cce57c917"},"schema_version":"1.0"},"canonical_sha256":"fe357a61ee46310e54266c1ba730e2a8194532c28e9d9aec9f92131a82d5a160","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T08:16:02.742188Z","signature_b64":"3I536ujgRIMpbToiHG9JCwQmS0Hh7fiizLYsV+TD3OE+dlJTB0Pf9MrzvEUb33NeUODMW61Hy8EnWl/hwc1mAw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"fe357a61ee46310e54266c1ba730e2a8194532c28e9d9aec9f92131a82d5a160","last_reissued_at":"2026-07-05T08:16:02.741797Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T08:16:02.741797Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2405.03409","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":"2026-07-05T08:16:02Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Mu2ZFuBVltJeT3B67w55POdC+1kegbZfXVga8xjAHgCg2jcq22KWnf5MFbPei9lTvt0iYETryzcyrTA/0vLaDg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-23T12:50:01.023447Z"},"content_sha256":"e448a45dae5f6d6b4b69bcea656cbb56156e1b7e6a0ad1e9d6b6359284c8bd71","schema_version":"1.0","event_id":"sha256:e448a45dae5f6d6b4b69bcea656cbb56156e1b7e6a0ad1e9d6b6359284c8bd71"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2024:7Y2XUYPOIYYQ4VBGNQN2OMHCVA","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"LightTR: A Lightweight Framework for Federated Trajectory Recovery","license":"http://creativecommons.org/licenses/by-nc-sa/4.0/","headline":"","cross_cats":[],"primary_cat":"cs.LG","authors_text":"Chenxi Liu, Hao Miao, Huan Li, Kai Zheng, Yan Zhao, Ziqiao Liu","submitted_at":"2024-05-06T12:20:55Z","abstract_excerpt":"With the proliferation of GPS-equipped edge devices, huge trajectory data is generated and accumulated in various domains, motivating a variety of urban applications. Due to the limited acquisition capabilities of edge devices, a lot of trajectories are recorded at a low sampling rate, which may lead to the effectiveness drop of urban applications. We aim to recover a high-sampled trajectory based on the low-sampled trajectory in free space, i.e., without road network information, to enhance the usability of trajectory data and support urban applications more effectively. Recent proposals targ"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2405.03409","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":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2405.03409/integrity.json","findings":[],"available":true,"detectors_run":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938"},"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":"2026-07-05T08:16:02Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"OHhtS+t+tj2+4q9j3VdnGI+2ByaJahRQHzcsCB0bLyVAV1ozd0/FpETt28YQvvLKgpbMf3geH608CEHfMdCfBQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-23T12:50:01.023951Z"},"content_sha256":"447a4bd84dd4ba2ccdd4c5c4fb5b2ecb328591a9280797c09f515394dabbe746","schema_version":"1.0","event_id":"sha256:447a4bd84dd4ba2ccdd4c5c4fb5b2ecb328591a9280797c09f515394dabbe746"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/7Y2XUYPOIYYQ4VBGNQN2OMHCVA/bundle.json","state_url":"https://pith.science/pith/7Y2XUYPOIYYQ4VBGNQN2OMHCVA/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/7Y2XUYPOIYYQ4VBGNQN2OMHCVA/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":"2026-08-23T12:50:01Z","links":{"resolver":"https://pith.science/pith/7Y2XUYPOIYYQ4VBGNQN2OMHCVA","bundle":"https://pith.science/pith/7Y2XUYPOIYYQ4VBGNQN2OMHCVA/bundle.json","state":"https://pith.science/pith/7Y2XUYPOIYYQ4VBGNQN2OMHCVA/state.json","well_known_bundle":"https://pith.science/.well-known/pith/7Y2XUYPOIYYQ4VBGNQN2OMHCVA/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2024:7Y2XUYPOIYYQ4VBGNQN2OMHCVA","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":"6e0362e4810f5fb85e60425a19b187a35a6f804c19c86a9617c0041cce57c917","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by-nc-sa/4.0/","primary_cat":"cs.LG","submitted_at":"2024-05-06T12:20:55Z","title_canon_sha256":"5b88cf474db65869dabfa8601c1c67df5fef7044097bc70b48587a4a8900596b"},"schema_version":"1.0","source":{"id":"2405.03409","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2405.03409","created_at":"2026-07-05T08:16:02Z"},{"alias_kind":"arxiv_version","alias_value":"2405.03409v1","created_at":"2026-07-05T08:16:02Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2405.03409","created_at":"2026-07-05T08:16:02Z"},{"alias_kind":"pith_short_12","alias_value":"7Y2XUYPOIYYQ","created_at":"2026-07-05T08:16:02Z"},{"alias_kind":"pith_short_16","alias_value":"7Y2XUYPOIYYQ4VBG","created_at":"2026-07-05T08:16:02Z"},{"alias_kind":"pith_short_8","alias_value":"7Y2XUYPO","created_at":"2026-07-05T08:16:02Z"}],"graph_snapshots":[{"event_id":"sha256:447a4bd84dd4ba2ccdd4c5c4fb5b2ecb328591a9280797c09f515394dabbe746","target":"graph","created_at":"2026-07-05T08:16:02Z","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/2405.03409/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"With the proliferation of GPS-equipped edge devices, huge trajectory data is generated and accumulated in various domains, motivating a variety of urban applications. Due to the limited acquisition capabilities of edge devices, a lot of trajectories are recorded at a low sampling rate, which may lead to the effectiveness drop of urban applications. We aim to recover a high-sampled trajectory based on the low-sampled trajectory in free space, i.e., without road network information, to enhance the usability of trajectory data and support urban applications more effectively. Recent proposals targ","authors_text":"Chenxi Liu, Hao Miao, Huan Li, Kai Zheng, Yan Zhao, Ziqiao Liu","cross_cats":[],"headline":"","license":"http://creativecommons.org/licenses/by-nc-sa/4.0/","primary_cat":"cs.LG","submitted_at":"2024-05-06T12:20:55Z","title":"LightTR: A Lightweight Framework for Federated Trajectory Recovery"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2405.03409","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:e448a45dae5f6d6b4b69bcea656cbb56156e1b7e6a0ad1e9d6b6359284c8bd71","target":"record","created_at":"2026-07-05T08:16:02Z","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":"6e0362e4810f5fb85e60425a19b187a35a6f804c19c86a9617c0041cce57c917","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by-nc-sa/4.0/","primary_cat":"cs.LG","submitted_at":"2024-05-06T12:20:55Z","title_canon_sha256":"5b88cf474db65869dabfa8601c1c67df5fef7044097bc70b48587a4a8900596b"},"schema_version":"1.0","source":{"id":"2405.03409","kind":"arxiv","version":1}},"canonical_sha256":"fe357a61ee46310e54266c1ba730e2a8194532c28e9d9aec9f92131a82d5a160","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"fe357a61ee46310e54266c1ba730e2a8194532c28e9d9aec9f92131a82d5a160","first_computed_at":"2026-07-05T08:16:02.741797Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T08:16:02.741797Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"3I536ujgRIMpbToiHG9JCwQmS0Hh7fiizLYsV+TD3OE+dlJTB0Pf9MrzvEUb33NeUODMW61Hy8EnWl/hwc1mAw==","signature_status":"signed_v1","signed_at":"2026-07-05T08:16:02.742188Z","signed_message":"canonical_sha256_bytes"},"source_id":"2405.03409","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:e448a45dae5f6d6b4b69bcea656cbb56156e1b7e6a0ad1e9d6b6359284c8bd71","sha256:447a4bd84dd4ba2ccdd4c5c4fb5b2ecb328591a9280797c09f515394dabbe746"],"state_sha256":"f440e3e19c79e31800b41178d39fbc767207edc7d6a615e268070deb3fe602b3"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"yPlAu8BzvMp6R5pVDTe2KAcd8jqsed43dssOVf7SKYJdkHF1WYJVxtli08kyloJ+LaMTNjXrht2rV+2JRqYRBQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-23T12:50:01.027528Z","bundle_sha256":"1cc681e52420975149e3986f757e2cd21e1a4538a85b89d2118accce4a1874ce"}}