Arman Cohan
Assistant ProfessorCards
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Research
Publications
2026
MedicalAgentsBench for complex medical reasoning: Comparing internalized reasoning models versus externalized agent-based frameworks
Shao Y, Tang X, Sohn J, Chen J, Zhang J, Xiang J, Wu F, Zhao Y, Wu C, Shi W, Cohan A, Liao Y, Gerstein M. MedicalAgentsBench for complex medical reasoning: Comparing internalized reasoning models versus externalized agent-based frameworks. Patterns 2026, 101610. DOI: 10.1016/j.patter.2026.101610.Peer-Reviewed Original ResearchBPI26-028: Hippocrates-Karkinos-o1: An Enhanced Model for Oncology Decision Support and Guideline-Aware Reasoning With Self-Refinement and Guideline-Informed Retrieval.
Aguirre N, Wang B, Schaefer E, Huang J, Li X, Kolamuri S, Ying L, Li X, Ang S, Schneider E, Pai S, Cohan A, Ong C. BPI26-028: Hippocrates-Karkinos-o1: An Enhanced Model for Oncology Decision Support and Guideline-Aware Reasoning With Self-Refinement and Guideline-Informed Retrieval. Journal Of The National Comprehensive Cancer Network 2026, 24 PMID: 42061427, DOI: 10.6004/jnccn.2025.7253.Peer-Reviewed Original ResearchInvestigating Retrieval-Augmented Generation Systems on Unanswerable, Uncheatable, Realistic, Multi-hop Queries
Liu G, Li B, Cohan A, Walden W, Yang E. Investigating Retrieval-Augmented Generation Systems on Unanswerable, Uncheatable, Realistic, Multi-hop Queries. Lecture Notes In Computer Science 2026, 16484: 360-370. DOI: 10.1007/978-3-032-21300-6_26.ChaptersCPTCoder: A Reliable LLM System for Medical Procedure Code Prediction
Wang B, Shangguan Z, Tegtmeyer K, Zhang Z, Chheang S, Cohan A. CPTCoder: A Reliable LLM System for Medical Procedure Code Prediction. 2026, 605-614. DOI: 10.18653/v1/2026.acl-demo.60.Peer-Reviewed Original Research
2025
From Scores to Steps: Diagnosing and Improving LLM Performance in Evidence-Based Medical Calculations
Wang B, Xia I, Zhang Y, Wang J, Ouyang F, Han S, Cohan A, Yu H, Yao Z. From Scores to Steps: Diagnosing and Improving LLM Performance in Evidence-Based Medical Calculations. 2025, 2025: 10809-10833. PMID: 41799784, PMCID: PMC12961587, DOI: 10.18653/v1/2025.emnlp-main.548.Peer-Reviewed Original ResearchRisks of AI scientists: prioritizing safeguarding over autonomy
Tang X, Jin Q, Zhu K, Yuan T, Zhang Y, Zhou W, Qu M, Zhao Y, Tang J, Zhang Z, Cohan A, Greenbaum D, Lu Z, Gerstein M. Risks of AI scientists: prioritizing safeguarding over autonomy. Nature Communications 2025, 16: 8317. PMID: 40968279, PMCID: PMC12446425, DOI: 10.1038/s41467-025-63913-1.Peer-Reviewed Reviews, Practice Guidelines, Standards, and Consensus StatementsA Large-Scale Study of Reranker Relevance Feedback at Inference
Reddy R, Dasigi P, Sultan A, Cohan A, Sil A, Ji H, Hajishirzi H. A Large-Scale Study of Reranker Relevance Feedback at Inference. 2025, 3010-3014. DOI: 10.1145/3726302.3730160.Peer-Reviewed Original ResearchMMVU: Measuring Expert-Level Multi-Discipline Video Understanding
Zhao Y, Zhang H, Xie L, Hu T, Gan G, Long Y, Hu Z, Chen W, Li C, Xu Z, Wang C, Shangguan Z, Liang Z, Liu Y, Zhao C, Cohan A. MMVU: Measuring Expert-Level Multi-Discipline Video Understanding. 2025, 00: 8475-8489. DOI: 10.1109/cvpr52734.2025.00793.Peer-Reviewed Original ResearchRouterRetriever: Routing over a Mixture of Expert Embedding Models
Lee H, Soldaini L, Cohan A, Seo M, Lo K. RouterRetriever: Routing over a Mixture of Expert Embedding Models. Proceedings Of The AAAI Conference On Artificial Intelligence 2025, 39: 11995-12003. DOI: 10.1609/aaai.v39i11.33306.Peer-Reviewed Original ResearchmFollowIR: A Multilingual Benchmark for Instruction Following in Retrieval
Weller O, Chang B, Yang E, Yarmohammadi M, Barham S, MacAvaney S, Cohan A, Soldaini L, Van Durme B, Lawrie D. mFollowIR: A Multilingual Benchmark for Instruction Following in Retrieval. Lecture Notes In Computer Science 2025, 15573: 295-310. DOI: 10.1007/978-3-031-88711-6_19.Chapters
News
News
- July 23, 2026
Center for Brain & Mind Health Announces 2026 Pilot Grant Program Awardees
- October 02, 2024
NIH Awards $1.5 Million Grant to Improve Factual Correctness in Large Language Models in Health Care
- June 12, 2024Source: Yale New Haven Health
Yale New Haven Health and Yale University celebrate Innovation Awards
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