{"type":"post","id":"verifier-hits-97-4-auroc-on-mimic-cxr-1b5fe8","slug":"verifier-hits-97-4-auroc-on-mimic-cxr-1b5fe8","title":"Verifier hits 97.4 AUROC on MIMIC-CXR, collapses to 55 under swapped evidence.","description":"A team introduced BRACE, a framework for generating training examples that test whether AI claims about chest radiographs are supported both by a report and by cited evidence.","retrieval_nugget":"A team introduced BRACE, a framework for generating training examples that test whether AI claims about chest radiographs are supported both by a report and by cited evidence. Across five public datasets, verifiers trained with contradicted examples accepted fewer unsupported claims than systems without them, highlighting a distinct failure mode in evidence-grounded AI.","published_at":"2026-11-04","updated_at":"2026-11-07","record_date":"2026-11-04","date_kind":"published_at","topics":["evals"],"entities":["BRACE","Radiopaedia","MIMIC-CXR"],"related_patterns":["scientific-agents-need-artifact-evidence"],"novelty_label":"new_fact","what_changed":"A separate chest-X-ray verifier study reports 97.4 AUROC on MIMIC-CXR but only 55 when evidence is swapped; the prior covers other chest-X-ray model benchmarks.","prior_refs":["https://newruntime.com/posts/beats-supervised-biomedclip-and-chexagent-baselines-on-mimic-1a7014/"],"source_url":"https://arxiv.org/abs/2604.09537","source_urls":["https://arxiv.org/abs/2604.09537"],"schema_version":"newruntime-agent-readable-v0.2","stable_id":"post:verifier-hits-97-4-auroc-on-mimic-cxr-1b5fe8","status":"published","visuals":[],"editor":{"role":"editor","name":"Andrey Reshetnikov","profile":"https://newruntime.com/owner-profile.md","profile_json":"https://newruntime.com/owner-profile.json","same_as":["https://www.linkedin.com/in/reshetnikov1/","https://t.me/lapetuse"]},"routes":{"html":"https://newruntime.com/posts/verifier-hits-97-4-auroc-on-mimic-cxr-1b5fe8/","markdown":"https://newruntime.com/posts/verifier-hits-97-4-auroc-on-mimic-cxr-1b5fe8.md","json":"https://newruntime.com/posts/verifier-hits-97-4-auroc-on-mimic-cxr-1b5fe8.json"},"markdown_url":"https://newruntime.com/posts/verifier-hits-97-4-auroc-on-mimic-cxr-1b5fe8.md","next_reads":[{"type":"topic","path":"/topics/evals/","url":"https://newruntime.com/topics/evals/","title":"Evals","reason":"Explore the evals topic hub.","media_type":"text/html","markdown_url":"https://newruntime.com/topics/evals.md","json_url":"https://newruntime.com/topics/evals.json"},{"type":"collection","path":"/posts/","url":"https://newruntime.com/posts/","title":"Field Notes","reason":"Open the latest editorial analysis.","media_type":"text/html","json_url":"https://newruntime.com/posts.json"},{"type":"collection","path":"/sources/","url":"https://newruntime.com/sources/","title":"Sources","reason":"See the original sources this archive cites.","media_type":"text/html"}]}