5 papers
From Local Evidence to Safety Verdicts: Causal Tracing in Vision-Language Models
Faezeh Dehghan Tarzjani, Mevan Wijewardena, Alexander Romanus +1
A vision-language model may need to combine an image with a prompt to recognize a safety risk that neither reveals alone. Where does this joint safety judgment become accessible in…
Bandit-Based Rate Adaptation for a Single-Server Queue
Mevan Wijewardena, Kamiar Asgari, Michael J. Neely
This paper considers the problem of obtaining bounded time-average expected queue sizes in a single-queue system with a partial-feedback structure. Time is slotted; in slot the…
Automatic Link Selection in Multi-Channel Multiple Access with Link Failures
Mevan Wijewardena, Michael J. Neely, Haipeng Luo
This paper focuses on the problem of automatic link selection in multi-channel multiple access control using bandit feedback. In particular, a controller assigns multiple users to…
Multi-Player Resource-Sharing Games with Fair Reward Allocation
Mevan Wijewardena, Michael. J Neely
This paper considers an online multi-player resource-sharing game with bandit feedback. Multiple players choose from a finite collection of resources in a time slotted system. In e…
A Two-Player Resource-Sharing Game with Asymmetric Information
Mevan Wijewardena, Michael J. Neely
This paper considers a two-player game where each player chooses a resource from a finite collection of options. Each resource brings a random reward. Both players have statistical…