{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2020:U7BKRGJWSXVTXMCZLKNFNE3TVK","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":"34fe875a817ef431494550f6abf58225a9daa33a1f1857846cd9f51318ae5007","cross_cats_sorted":["physics.soc-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"stat.AP","submitted_at":"2020-12-01T10:54:18Z","title_canon_sha256":"a1294f55dac9d61db7e53d5a344a634e38778eff187c6101f56dca0913ba0a61"},"schema_version":"1.0","source":{"id":"2012.00397","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2012.00397","created_at":"2026-07-05T01:55:35Z"},{"alias_kind":"arxiv_version","alias_value":"2012.00397v1","created_at":"2026-07-05T01:55:35Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2012.00397","created_at":"2026-07-05T01:55:35Z"},{"alias_kind":"pith_short_12","alias_value":"U7BKRGJWSXVT","created_at":"2026-07-05T01:55:35Z"},{"alias_kind":"pith_short_16","alias_value":"U7BKRGJWSXVTXMCZ","created_at":"2026-07-05T01:55:35Z"},{"alias_kind":"pith_short_8","alias_value":"U7BKRGJW","created_at":"2026-07-05T01:55:35Z"}],"graph_snapshots":[{"event_id":"sha256:965d50bbf701e6541c91344644f51a311d6ac5fe5cf2990722211a008bc55f3a","target":"graph","created_at":"2026-07-05T01:55:35Z","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/2012.00397/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"The unprecedented coronavirus disease 2019 (COVID-19) pandemic is still a worldwide threat to human life since its invasion into the daily lives of the public in the first several months of 2020. Predicting the size of confirmed cases is important for countries and communities to make proper prevention and control policies so as to effectively curb the spread of COVID-19. Different from the 2003 SARS epidemic and the worldwide 2009 H1N1 influenza pandemic, COVID-19 has unique epidemiological characteristics in its infectious and recovered compartments. This drives us to formulate a new infecti","authors_text":"Catherine Liu, Hong Zhang, Lu Yang, Xinyu Wang, Zhouwang Yang","cross_cats":["physics.soc-ph"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"stat.AP","submitted_at":"2020-12-01T10:54:18Z","title":"Forecasting confirmed cases of the COVID-19 pandemic with a migration-based epidemiological model"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2012.00397","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":"sha256:383908e1a6bf631187936f53f92dcc22bcbc2c8037ac2d3b20a1b6c14f20b2ef","target":"record","created_at":"2026-07-05T01:55:35Z","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":"34fe875a817ef431494550f6abf58225a9daa33a1f1857846cd9f51318ae5007","cross_cats_sorted":["physics.soc-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"stat.AP","submitted_at":"2020-12-01T10:54:18Z","title_canon_sha256":"a1294f55dac9d61db7e53d5a344a634e38778eff187c6101f56dca0913ba0a61"},"schema_version":"1.0","source":{"id":"2012.00397","kind":"arxiv","version":1}},"canonical_sha256":"a7c2a8993695eb3bb0595a9a569373aa894de39a9b800fe19d0252434f1f5626","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"a7c2a8993695eb3bb0595a9a569373aa894de39a9b800fe19d0252434f1f5626","first_computed_at":"2026-07-05T01:55:35.895328Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T01:55:35.895328Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"q0wtov0MsFKOgV2uQZZ1Z60nSN0YO/zxBiM6OQHoMtg6srMZG/clZflUbQP3Ss9MbKs8gqr6pxMmx2ktWIZqCQ==","signature_status":"signed_v1","signed_at":"2026-07-05T01:55:35.895888Z","signed_message":"canonical_sha256_bytes"},"source_id":"2012.00397","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:383908e1a6bf631187936f53f92dcc22bcbc2c8037ac2d3b20a1b6c14f20b2ef","sha256:965d50bbf701e6541c91344644f51a311d6ac5fe5cf2990722211a008bc55f3a"],"state_sha256":"905c61fd7cc287faa66bd488d2dc5fdb002f94c1edb482c2479324a897498d04"}