3 papers
math.CO2026
Exact Zarankiewicz Values On Two Finite Frontier Slices
Koyar Afrasyab
The Zarankiewicz number Z(m,n,s,t) is the maximum number of edges in a bipartite graph with parts of orders m and n containing no copy of Ks,t. We give one combined, certificate-ba…
cs.AI2026
Evaluating medical AI under missing information: same-provider judges and human raters change apparent safety
Koyar Afrasyab
Readiness stress-testing of medical AI has focused on closed-ended and multimodal benchmarks. We extend it to open-ended clinical conversation under missing information, where safe…
cs.AI2026
Judge-dependent safety gains and model-specific helpfulness costs of evidence-sufficiency prompting in clinical LLMs
Koyar Afrasyab
Background: LLM judges increasingly score whether clinical language models give overconfident answers under incomplete evidence, yet whether a measured "safety gain" reflects real…