8 papers
TRAM: Test-Time Risk Adaptation with Mixture of Agents
Mohamad Fares El Hajj Chehade, Amrit Singh Bedi, Amy Zhang +1
Deployed reinforcement learning agents often face safety requirements that are specified only after training, such as new hazard maps, revised risk thresholds, or behavioral alignm…
NEO-Grid: A Neural Approximation Framework for Optimization and Control in Distribution Grids
Mohamad Chehade, Hao Zhu
The rise of distributed energy resources (DERs) is reshaping modern distribution grids, introducing new challenges in attaining voltage stability under dynamic and decentralized op…
BOOST: Microgrid Sizing using Ordinal Optimization
Mohamad Chehade, Sami Karaki
Sizing a residential microgrid efficiently requires solving a coupled design-and-operation problem: photovoltaic (PV) and battery capacities should be chosen in a way that reflects…
Carbon-aware Market Participation for Building Energy Management Systems
Young-ho Cho, Mohamad Chehade, Fatima Al-Janahi +3
Tackling climate change requires the rapid and deep decarbonization of electric power systems. While energy management systems (EMSs) play a central role in this transition, conven…
Analysis of a degenerate parabolic system for cell dynamics in intestinal crypts
Ahmad El Hajj, Mohamad El Hajj Chehade, Antoine Zurek
In this work, we study a system of degenerate parabolic equations modeling the dynamics of multiple cell populations in intestinal crypts. The model describes cell division, differ…
Fine-Tuning LLMs to Generate Economical and Reliable Actions for the Power Grid
Mohamad Chehade, Hao Zhu
Public Safety Power Shutoffs (PSPS) force rapid topology changes that can render standard operating points infeasible, requiring operators to quickly identify corrective transmissi…