Publications (83)
Approximating the Gomory Mixed-Integer Cut Closure Using Historical Data
Berkay Becu, Santanu S. Dey, Feng Qiu +1
Many operations related optimization problems involve repeatedly solving similar mixed integer linear programming (MILP) instances with the same constraint matrix but differing obj…
Robust Defense Strategy for Gas-Electric Systems Against Malicious Attacks
Cheng Wang, Wei Wei, Jianhui Wang +4
This paper proposes a methodology to identify and protect vulnerable components of connected gas and electric infrastructures from malicious attacks, and to guarantee a resilient o…
DoFlow: Flow-based Generative Models for Interventional and Counterfactual Forecasting on Time Series
Dongze Wu, Feng Qiu, Yao Xie
Time-series forecasting increasingly demands not only accurate observational predictions but also causal forecasting under interventional and counterfactual queries in multivariate…
Risk-Based Distributionally Robust Optimal Power Flow With Dynamic Line Rating
Cheng Wang, Rui Gao, Feng Qiu +2
In this paper, we propose a risk-based data-driven approach to optimal power flow (DROPF) with dynamic line rating. The risk terms, including penalties for load shedding, wind gene…
Global-Decision-Focused Neural ODEs for Proactive Grid Resilience Management
Shuyi Chen, Ferdinando Fioretto, Feng Qiu +1
Extreme hazard events such as wildfires and hurricanes increasingly threaten power systems, causing widespread outages and disrupting critical services. Recently, predict-then-opti…
Transformer-based Multimodal Information Fusion for Facial Expression Analysis
Wei Zhang, Feng Qiu, Suzhen Wang +5
Human affective behavior analysis has received much attention in human-computer interaction (HCI). In this paper, we introduce our submission to the CVPR 2022 Competition on Affect…