{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2020:6CFDLKW7M5YUSXU3MN6QVWTM7W","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":"ef7787ef066910d944f588198f98e2cf1bae12dd852136525f62a56afb3043cc","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"q-bio.PE","submitted_at":"2020-04-14T05:33:41Z","title_canon_sha256":"caa57f7066a97682ced333f57215fe9db4f155bb2ecd7bf136974c831459071b"},"schema_version":"1.0","source":{"id":"2004.06311","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2004.06311","created_at":"2026-07-05T00:54:50Z"},{"alias_kind":"arxiv_version","alias_value":"2004.06311v1","created_at":"2026-07-05T00:54:50Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2004.06311","created_at":"2026-07-05T00:54:50Z"},{"alias_kind":"pith_short_12","alias_value":"6CFDLKW7M5YU","created_at":"2026-07-05T00:54:50Z"},{"alias_kind":"pith_short_16","alias_value":"6CFDLKW7M5YUSXU3","created_at":"2026-07-05T00:54:50Z"},{"alias_kind":"pith_short_8","alias_value":"6CFDLKW7","created_at":"2026-07-05T00:54:50Z"}],"graph_snapshots":[{"event_id":"sha256:47d914f4cf086f1750ca1f724d4ce1602141c124de83d1f8bae6ac63ef0949dd","target":"graph","created_at":"2026-07-05T00:54:50Z","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/2004.06311/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"We measure the effect of different public health regulations to the spread of COVID-19, based on a SEIRA model -- a SEIR model including asymptomatic transmissions. The cumulative confirmed cases and death show nonlinear positive relationship with the value of asymptomatic rate. Based on this model, we analyze the inhibit effects to COVID-19 of three types of public health policies, i.e. isolation of laboratory confirmed cases, general personal protection and quarantine (lock-down). The simulations conclude that the isolation display limited effects to the asymptomatic viral carriers. The gene","authors_text":"Weijie Pang","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"q-bio.PE","submitted_at":"2020-04-14T05:33:41Z","title":"Public Health Policy: COVID-19 Epidemic and SEIR Model with Asymptomatic Viral Carriers"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2004.06311","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:ca618cf5d393230a48f0743254c0f5e9340ec00c4a1354ef0528edd709afba68","target":"record","created_at":"2026-07-05T00:54:50Z","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":"ef7787ef066910d944f588198f98e2cf1bae12dd852136525f62a56afb3043cc","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"q-bio.PE","submitted_at":"2020-04-14T05:33:41Z","title_canon_sha256":"caa57f7066a97682ced333f57215fe9db4f155bb2ecd7bf136974c831459071b"},"schema_version":"1.0","source":{"id":"2004.06311","kind":"arxiv","version":1}},"canonical_sha256":"f08a35aadf6771495e9b637d0ada6cfda4dc59c3d55c5afe92788fee1d1f8e07","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"f08a35aadf6771495e9b637d0ada6cfda4dc59c3d55c5afe92788fee1d1f8e07","first_computed_at":"2026-07-05T00:54:50.750879Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T00:54:50.750879Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"mrf2cN9Kx4LrV4zxGXsq4Rzhw2pJ3knru6mfdMbJzhJP3msNCayA0ckuxchfJ132J7VhFiGHY0Fn1l1rubOHDQ==","signature_status":"signed_v1","signed_at":"2026-07-05T00:54:50.751269Z","signed_message":"canonical_sha256_bytes"},"source_id":"2004.06311","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:ca618cf5d393230a48f0743254c0f5e9340ec00c4a1354ef0528edd709afba68","sha256:47d914f4cf086f1750ca1f724d4ce1602141c124de83d1f8bae6ac63ef0949dd"],"state_sha256":"3d950e9e6f6ef79fd938a38ea03dfe3866925a1c139da86473577fb5429e2bb4"}