{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2023:LFKQC3S47HCINHCOIJGPXBTVAM","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":"34b3b0fa0a68b136eb4d261f70677e4eb64a902dbef7272ee9b6c36cf3436cce","cross_cats_sorted":["cs.CV"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"eess.IV","submitted_at":"2023-11-29T14:40:31Z","title_canon_sha256":"59bddadf1d062490f2ca3f52ce38bdaf24354aba16575313ef4e0cbe165177d1"},"schema_version":"1.0","source":{"id":"2311.17677","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2311.17677","created_at":"2026-07-05T07:18:17Z"},{"alias_kind":"arxiv_version","alias_value":"2311.17677v1","created_at":"2026-07-05T07:18:17Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2311.17677","created_at":"2026-07-05T07:18:17Z"},{"alias_kind":"pith_short_12","alias_value":"LFKQC3S47HCI","created_at":"2026-07-05T07:18:17Z"},{"alias_kind":"pith_short_16","alias_value":"LFKQC3S47HCINHCO","created_at":"2026-07-05T07:18:17Z"},{"alias_kind":"pith_short_8","alias_value":"LFKQC3S4","created_at":"2026-07-05T07:18:17Z"}],"graph_snapshots":[{"event_id":"sha256:1669b53ab4ed57fb25c637e9948925bac8787c4338d5e1017121243dbd4febf0","target":"graph","created_at":"2026-07-05T07:18:17Z","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/2311.17677/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"The global ramifications of the COVID-19 pandemic remain significant, exerting persistent pressure on nations even three years after its initial outbreak. Deep learning models have shown promise in improving COVID-19 diagnostics but require diverse and larger-scale datasets to improve performance. In this paper, we introduce COVIDx CXR-4, an expanded multi-institutional open-source benchmark dataset for chest X-ray image-based computer-aided COVID-19 diagnostics. COVIDx CXR-4 expands significantly on the previous COVIDx CXR-3 dataset by increasing the total patient cohort size by greater than ","authors_text":"Alexander Wong, Chi-en Amy Tai, Hayden Gunraj, Yifan Wu","cross_cats":["cs.CV"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"eess.IV","submitted_at":"2023-11-29T14:40:31Z","title":"COVIDx CXR-4: An Expanded Multi-Institutional Open-Source Benchmark Dataset for Chest X-ray Image-Based Computer-Aided COVID-19 Diagnostics"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2311.17677","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":"sha256:19e7136db8a1c93955c3bb65d46891ba83a4049dbc69873bb713a9e730480fa7","target":"record","created_at":"2026-07-05T07:18:17Z","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":"34b3b0fa0a68b136eb4d261f70677e4eb64a902dbef7272ee9b6c36cf3436cce","cross_cats_sorted":["cs.CV"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"eess.IV","submitted_at":"2023-11-29T14:40:31Z","title_canon_sha256":"59bddadf1d062490f2ca3f52ce38bdaf24354aba16575313ef4e0cbe165177d1"},"schema_version":"1.0","source":{"id":"2311.17677","kind":"arxiv","version":1}},"canonical_sha256":"5955016e5cf9c4869c4e424cfb8675031e8e6cbc20593660fb070f4a61e9e7f8","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"5955016e5cf9c4869c4e424cfb8675031e8e6cbc20593660fb070f4a61e9e7f8","first_computed_at":"2026-07-05T07:18:17.418479Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T07:18:17.418479Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"esP8fkDpRnmZFmEaOzAnJXnzV1aolaf4vq0jMffqIfwLULOigBeI5YEv8gaq4QWoIMi7QnGF8OYJqIN5HXTDAQ==","signature_status":"signed_v1","signed_at":"2026-07-05T07:18:17.418977Z","signed_message":"canonical_sha256_bytes"},"source_id":"2311.17677","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:19e7136db8a1c93955c3bb65d46891ba83a4049dbc69873bb713a9e730480fa7","sha256:1669b53ab4ed57fb25c637e9948925bac8787c4338d5e1017121243dbd4febf0"],"state_sha256":"6b31617b097ab7e602054f933401ce4c5243257cff1b7ca9c0c842438eec1f86"}