{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2021:C6OC2S5J5K7JZPWNRFP36QLJIG","short_pith_number":"pith:C6OC2S5J","canonical_record":{"source":{"id":"2102.08628","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.AI","submitted_at":"2021-02-17T08:37:05Z","cross_cats_sorted":["eess.SP"],"title_canon_sha256":"a7f566f733646aad662bc1e4995d4d749aacf828934ca70795c2ed7ab185efaf","abstract_canon_sha256":"c789002852da984f3d41cb75d01ac760cc4f988e908a6b9612d2f6dca12e147a"},"schema_version":"1.0"},"canonical_sha256":"179c2d4ba9eabe9cbecd895fbf416941a6aa6be6ff4d7fbd80df9cf100fe5ba1","source":{"kind":"arxiv","id":"2102.08628","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2102.08628","created_at":"2026-07-05T02:24:54Z"},{"alias_kind":"arxiv_version","alias_value":"2102.08628v1","created_at":"2026-07-05T02:24:54Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2102.08628","created_at":"2026-07-05T02:24:54Z"},{"alias_kind":"pith_short_12","alias_value":"C6OC2S5J5K7J","created_at":"2026-07-05T02:24:54Z"},{"alias_kind":"pith_short_16","alias_value":"C6OC2S5J5K7JZPWN","created_at":"2026-07-05T02:24:54Z"},{"alias_kind":"pith_short_8","alias_value":"C6OC2S5J","created_at":"2026-07-05T02:24:54Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2021:C6OC2S5J5K7JZPWNRFP36QLJIG","target":"record","payload":{"canonical_record":{"source":{"id":"2102.08628","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.AI","submitted_at":"2021-02-17T08:37:05Z","cross_cats_sorted":["eess.SP"],"title_canon_sha256":"a7f566f733646aad662bc1e4995d4d749aacf828934ca70795c2ed7ab185efaf","abstract_canon_sha256":"c789002852da984f3d41cb75d01ac760cc4f988e908a6b9612d2f6dca12e147a"},"schema_version":"1.0"},"canonical_sha256":"179c2d4ba9eabe9cbecd895fbf416941a6aa6be6ff4d7fbd80df9cf100fe5ba1","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T02:24:54.043542Z","signature_b64":"JluvJUawnR37ifbjM8NZO9OPfsf60O7cN7vP8TRvmbFXa+8HO3lnQAZCoaUTFi03tsZfwRoKpbPEbpmluSFNAw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"179c2d4ba9eabe9cbecd895fbf416941a6aa6be6ff4d7fbd80df9cf100fe5ba1","last_reissued_at":"2026-07-05T02:24:54.043180Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T02:24:54.043180Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2102.08628","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":"2026-07-05T02:24:54Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"bcIzH8g8j5xuh4VWajDtXHDhaLs1gEmQYPydZj/2CS32BIBHHf7Z79s2Rj+XDxRjtAdilMQRalcmoZ0vAHtQCg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-19T16:22:40.234823Z"},"content_sha256":"fb1e33b5f714043708d6bbee40e986d81dfd1002ff0479349569b1cc94a21671","schema_version":"1.0","event_id":"sha256:fb1e33b5f714043708d6bbee40e986d81dfd1002ff0479349569b1cc94a21671"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2021:C6OC2S5J5K7JZPWNRFP36QLJIG","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Knowledge discovery from emergency ambulance dispatch during COVID-19: A case study of Nagoya City, Japan","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["eess.SP"],"primary_cat":"cs.AI","authors_text":"Akimasa Hirata, Essam A. Rashed, Hidenobu Shirakami, Kazuhiro Watanabe, Ryotetsu Kawaguchi, Sachiko Kodera","submitted_at":"2021-02-17T08:37:05Z","abstract_excerpt":"Accurate forecasting of medical service requirements is an important big data problem that is crucial for resource management in critical times such as natural disasters and pandemics. With the global spread of coronavirus disease 2019 (COVID-19), several concerns have been raised regarding the ability of medical systems to handle sudden changes in the daily routines of healthcare providers. One significant problem is the management of ambulance dispatch and control during a pandemic. To help address this problem, we first analyze ambulance dispatch data records from April 2014 to August 2020 "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2102.08628","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/2102.08628/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":"2026-07-05T02:24:54Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"4fC0+4Hxgl2J0k/aiMhCaE+dg62cVe1md+qbOVXThY16O+Ff+S0EPUkl/T1H0Vqpf7dPycgW7mtHrmujahpjAw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-19T16:22:40.235819Z"},"content_sha256":"9bfabd9ef70e8390e00ddc83e3ea4e183017bf417ad8be97cd934a3a04619d63","schema_version":"1.0","event_id":"sha256:9bfabd9ef70e8390e00ddc83e3ea4e183017bf417ad8be97cd934a3a04619d63"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/C6OC2S5J5K7JZPWNRFP36QLJIG/bundle.json","state_url":"https://pith.science/pith/C6OC2S5J5K7JZPWNRFP36QLJIG/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/C6OC2S5J5K7JZPWNRFP36QLJIG/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":"2026-08-19T16:22:40Z","links":{"resolver":"https://pith.science/pith/C6OC2S5J5K7JZPWNRFP36QLJIG","bundle":"https://pith.science/pith/C6OC2S5J5K7JZPWNRFP36QLJIG/bundle.json","state":"https://pith.science/pith/C6OC2S5J5K7JZPWNRFP36QLJIG/state.json","well_known_bundle":"https://pith.science/.well-known/pith/C6OC2S5J5K7JZPWNRFP36QLJIG/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2021:C6OC2S5J5K7JZPWNRFP36QLJIG","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":"c789002852da984f3d41cb75d01ac760cc4f988e908a6b9612d2f6dca12e147a","cross_cats_sorted":["eess.SP"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.AI","submitted_at":"2021-02-17T08:37:05Z","title_canon_sha256":"a7f566f733646aad662bc1e4995d4d749aacf828934ca70795c2ed7ab185efaf"},"schema_version":"1.0","source":{"id":"2102.08628","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2102.08628","created_at":"2026-07-05T02:24:54Z"},{"alias_kind":"arxiv_version","alias_value":"2102.08628v1","created_at":"2026-07-05T02:24:54Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2102.08628","created_at":"2026-07-05T02:24:54Z"},{"alias_kind":"pith_short_12","alias_value":"C6OC2S5J5K7J","created_at":"2026-07-05T02:24:54Z"},{"alias_kind":"pith_short_16","alias_value":"C6OC2S5J5K7JZPWN","created_at":"2026-07-05T02:24:54Z"},{"alias_kind":"pith_short_8","alias_value":"C6OC2S5J","created_at":"2026-07-05T02:24:54Z"}],"graph_snapshots":[{"event_id":"sha256:9bfabd9ef70e8390e00ddc83e3ea4e183017bf417ad8be97cd934a3a04619d63","target":"graph","created_at":"2026-07-05T02:24:54Z","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/2102.08628/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Accurate forecasting of medical service requirements is an important big data problem that is crucial for resource management in critical times such as natural disasters and pandemics. With the global spread of coronavirus disease 2019 (COVID-19), several concerns have been raised regarding the ability of medical systems to handle sudden changes in the daily routines of healthcare providers. One significant problem is the management of ambulance dispatch and control during a pandemic. To help address this problem, we first analyze ambulance dispatch data records from April 2014 to August 2020 ","authors_text":"Akimasa Hirata, Essam A. Rashed, Hidenobu Shirakami, Kazuhiro Watanabe, Ryotetsu Kawaguchi, Sachiko Kodera","cross_cats":["eess.SP"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.AI","submitted_at":"2021-02-17T08:37:05Z","title":"Knowledge discovery from emergency ambulance dispatch during COVID-19: A case study of Nagoya City, Japan"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2102.08628","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:fb1e33b5f714043708d6bbee40e986d81dfd1002ff0479349569b1cc94a21671","target":"record","created_at":"2026-07-05T02:24:54Z","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":"c789002852da984f3d41cb75d01ac760cc4f988e908a6b9612d2f6dca12e147a","cross_cats_sorted":["eess.SP"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.AI","submitted_at":"2021-02-17T08:37:05Z","title_canon_sha256":"a7f566f733646aad662bc1e4995d4d749aacf828934ca70795c2ed7ab185efaf"},"schema_version":"1.0","source":{"id":"2102.08628","kind":"arxiv","version":1}},"canonical_sha256":"179c2d4ba9eabe9cbecd895fbf416941a6aa6be6ff4d7fbd80df9cf100fe5ba1","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"179c2d4ba9eabe9cbecd895fbf416941a6aa6be6ff4d7fbd80df9cf100fe5ba1","first_computed_at":"2026-07-05T02:24:54.043180Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T02:24:54.043180Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"JluvJUawnR37ifbjM8NZO9OPfsf60O7cN7vP8TRvmbFXa+8HO3lnQAZCoaUTFi03tsZfwRoKpbPEbpmluSFNAw==","signature_status":"signed_v1","signed_at":"2026-07-05T02:24:54.043542Z","signed_message":"canonical_sha256_bytes"},"source_id":"2102.08628","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:fb1e33b5f714043708d6bbee40e986d81dfd1002ff0479349569b1cc94a21671","sha256:9bfabd9ef70e8390e00ddc83e3ea4e183017bf417ad8be97cd934a3a04619d63"],"state_sha256":"b4b60ba27f0631fbb8dcdd314d272dba17b5cb0482c4b147f6cb37d2adb512f3"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"RbSr9J9TgGYeabNPBk6IsvRRW5Jt9ja9S7bUPMLY+twm/JEv865+BqUwWTtQ0XUGCisWmwE4yUBnEdf93GuvDg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-19T16:22:40.242022Z","bundle_sha256":"8477b8c7d7b5912613d855e0d3c3b64311c5a8fed61c23ea5ba642f4e5426cfe"}}