{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2018:EUUMADFPKU2MS6EUMKHLUHSDY3","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":"1afcf987a9e0a5807d440a4d4fa1e6c21b89807982e7b49e1bfd2b82fb8a5992","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.OH","submitted_at":"2018-10-18T07:25:28Z","title_canon_sha256":"2c0ff53b1ee235c1937bb7c65e3f9f902136854685ac4370c1db3bd151bfc165"},"schema_version":"1.0","source":{"id":"1810.08514","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1810.08514","created_at":"2026-05-17T23:52:33Z"},{"alias_kind":"arxiv_version","alias_value":"1810.08514v2","created_at":"2026-05-17T23:52:33Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1810.08514","created_at":"2026-05-17T23:52:33Z"},{"alias_kind":"pith_short_12","alias_value":"EUUMADFPKU2M","created_at":"2026-05-18T12:32:22Z"},{"alias_kind":"pith_short_16","alias_value":"EUUMADFPKU2MS6EU","created_at":"2026-05-18T12:32:22Z"},{"alias_kind":"pith_short_8","alias_value":"EUUMADFP","created_at":"2026-05-18T12:32:22Z"}],"graph_snapshots":[{"event_id":"sha256:20a04ab4919d80d319f86771af6a98e3518e7ce798b0f6849c612bffa5735a23","target":"graph","created_at":"2026-05-17T23:52:33Z","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":"Driven by the increasingly serious air pollution problem, the monitoring of air quality has gained much attention in both theoretical studies and practical implementations. In this paper, we present the architecture, implementation and optimization of our own air quality sensing system, which provides real-time and fine-grained air quality map of the monitored area. As the major component, the optimization problem of our system is studied in detail. Our objective is to minimize the average joint error of the established real-time air quality map, which involves data inference for the unmeasure","authors_text":"Kaigui Bian, Lingyang Song, Tao Wang, Zhiwen Hu, Zixuan Bai","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.OH","submitted_at":"2018-10-18T07:25:28Z","title":"Real-Time Fine-Grained Air Quality Sensing Networks in Smart City: Design, Implementation and Optimization"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1810.08514","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:afe60b447807da7aab6a914b9f9d54f69994fdda004992787a87351c69c13b52","target":"record","created_at":"2026-05-17T23:52:33Z","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":"1afcf987a9e0a5807d440a4d4fa1e6c21b89807982e7b49e1bfd2b82fb8a5992","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.OH","submitted_at":"2018-10-18T07:25:28Z","title_canon_sha256":"2c0ff53b1ee235c1937bb7c65e3f9f902136854685ac4370c1db3bd151bfc165"},"schema_version":"1.0","source":{"id":"1810.08514","kind":"arxiv","version":2}},"canonical_sha256":"2528c00caf5534c97894628eba1e43c6ee4ce6a80ec869b80494e052676bdd44","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"2528c00caf5534c97894628eba1e43c6ee4ce6a80ec869b80494e052676bdd44","first_computed_at":"2026-05-17T23:52:33.728089Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-17T23:52:33.728089Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"vtz322dw5mFrf2OWbtqHQ0ZF9gxdpU8p/SMVikxls6wnPuJVvkWLUrMeL0Jb26Hy1ogslQ57o3wpX+2xZMMMDA==","signature_status":"signed_v1","signed_at":"2026-05-17T23:52:33.728526Z","signed_message":"canonical_sha256_bytes"},"source_id":"1810.08514","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:afe60b447807da7aab6a914b9f9d54f69994fdda004992787a87351c69c13b52","sha256:20a04ab4919d80d319f86771af6a98e3518e7ce798b0f6849c612bffa5735a23"],"state_sha256":"6391fc4dba9513eb4c46728f6140bd5923972da7196f9a08255cf1b187ddde54"}