AI and ML in transportation, infrastructure and energy
Data-driven and probabilistic network modeling
Multi-source data mining
Infrastructure management
Selected Publications
Wei Ma, Sean Qian (2019), "Measuring and reducing the disequilibrium levels of dynamic networks through ridesourced vehicle data", Transportation Research Part C, accepted and forthcoming. [URL]
Wei Ma, George H. Chen (2019), "Missing Not at Random in Matrix Completion: The Effectiveness of Estimating Missingness Probabilities Under a Low Nuclear Norm Assumption", the Thirty-third Conference on Neural Information Processing Systems (NeurIPS 2019). [URL]
Wei Ma, Kendall Nowocin, Niraj Marathe, George H. Chen (2019), "An Interpretable Produce Price Forecasting System for Small Farmers in India using Collaborative Filtering and Adaptive Nearest Neighbors", the tenth International Conference on Information and Communication Technologies and Development (ICTDX). [URL]
Wei Ma, Sean Qian (2018), "Estimating 24/7 origin-destination demand using high granularity multi-source traffic data", Transportation Research Part C, Vol. 96, pp.96-121. [URL]
Wei Ma, Sean Qian (2018), "A Generalized Single-Level Formulation for Origin–Destination Estimation Under Stochastic User Equilibrium", Transportation Research Record. [URL]
Wei Ma, Sean Qian. (2018) "Statistical inference of probabilistic origin-destination demand using day-to-day traffic data", Transportation Research Part C, Vol.88, pp. 227-256. [URL]
Wei Ma, Sean Qian, "On the Variance of Recurrent Traffic Flow for Statistical Traffic Assignment", Transportation Research Part C, Vol.81, pp.57-82. [URL]
Ruimin Li, Wei Ma (2010) "Fusion method of road average-speed based on BP neural network and D-S evidence theory", Journal of Traffic and Transportation Engineering, 14.005 (2014): 111-118 (in Chinese)
Selected Presentations
Wei Ma and Sean Qian. High-resolution Ubiquitous Traffic Sensing with Automated Vehicles, presented in Automated Vehicles Symposium 2019, Orlando, FL, July 15-18, 2019, slides
Xidong Pi, Wei Ma and Sean Qian. A General Formulation for Multi-modal Dynamic Traffic Assignment Considering Multi-class vehicles, Public Transit and Parking, presented in the 23rd International Symposium on Transportation and Traffic Theory, ISTTT 23, Lausanne, Switzerland, July 24-26, 2019
Wei Ma and Sean Qian. Measuring and reducing the disequilibrium levels of dynamic networks through ridesourced vehicle data, presented in the Transportation Research Board (TRB) 98th Annual Meeting, 2019, slides
Wei Ma, Xidong Pi, Sean Qian. Estimating multi-class dynamic origin-destination demand through a forward-backward algorithm on the computational graph, presented in the Transportation Research Board (TRB) 98th Annual Meeting, 2019, poster
Wei Ma and Sean Qian. Estimating multi-year 24/7 origin-destination demand using high-granular multi-source traffic data, presented in the Transportation Research Board (TRB) 98th Annual Meeting, 2019, poster
Wei Ma and Sean Qian. A Generalized Single-level Formulation for Origin-Destination Estimation under Stochastic User Equilibrium, presented in the Transportation Research Board (TRB) 97th Annual Meeting , 2018, poster
Wei Ma. Travelers' Behavior Modeling, Demand Estimation and Trafficc Management: a Data Perspective, presented in the graduate seminar of Civil and Environmental Engineering, Carnegie Mellon University , 2017, poster
Wei Ma and Sean Qian. On the Variance of Recurrent Traffic Flow for Statistical Traffic Assignment, presented in the Transportation Research Board (TRB) 96th Annual Meeting , 2017, poster
Wei Ma and Sean Qian. Statistical inference of probabilistic origin-destination demand using day-to-day traffic data, presented in the Transportation Research Board (TRB) 96th Annual Meeting, 2017, poster
Wei Ma, Xidong Pi and Sean Qian. Mobility Data Analytics Center, presented in Carnegie Mellon Traffic21/T-SET UTC Consortium Symposium and Research Showcase, 2016, poster
Sean Qian, Wei Ma and Cong Ma. Dynamic network analysis and real-time traffic management for Philadelphia Metropolitan Area, presented in the Mid-Atlantic Section of the Institute of Transportation Engineers (MASITE) and the Intelligent Transportation Society of Pennsylvania (ITSPA) Annual Meeting , 2016
Wei Ma and Sean Qian. Generalized Statistical Traffic Assignment (GESTA), presented in the Institute for Operations Research and the Management Sciences (INFORMS) Annual Meeting , 2015, slides
Technical Reports
Sean Qian, Xidong Pi, Wei Ma (2019), Traffic Impact Study of CSX Pittsburgh Intermodal Rail Terminal and Mitigation Plans for McKees Rocks, submitted for Smart Mobility Challenge with the Borough of McKees Rocks, 2019, report
Sean Qian, Wei Ma, Allan Khariton, James Crnkovich (2018), Building an Accessible, Low-stress, Safe, and Sustainable, Bicycle Infrastructure Network for the City of Pittsburgh, submitted for U.S. Department of Transportation, University Transportation Centers Program, 2018, report
Sean Qian, Xidong Pi, Wei Ma (2018), Data-driven Network Models for Analyzing Multi-modal Transportation Systems, submitted for U.S. Department of Transportation, University Transportation Centers Program, 2018, report
Wei Ma, Pinchao Zhang and Sean Qian, (2016), Dynamic Network Analysis and Real-time Traffic Management for Philadelphia Metropolitan Area, submitted to the Pennsylvania Department of Transportation (PennDOT), report
Wei Ma, Sean Qian, (2015), Traffic impact of the Greenfield Bridge closure (AM peak), submitted to the Department of Public Works, the City of Pittsburgh, slides
Wei Ma, Sean Qian, (2015), Traffic impact of the Greenfield Bridge closure (PM peak), submitted to the Department of Public Works, the City of Pittsburgh, slides
