58 citations · 166 across the 14 of their papers we have counts for
7 papers · 1 filter
Missing Not at Random in Matrix Completion: The Effectiveness of Estimating Missingness Probabilities Under a Low Nuclear Norm Assumption
Wei Ma, George H. Chen
Matrix completion is often applied to data with entries missing not at random (MNAR). For example, consider a recommendation system where users tend to only reveal ratings for item…
High-Resolution Traffic Sensing with Autonomous Vehicles
Wei Ma, Sean Qian
The last decades have witnessed the breakthrough of autonomous vehicles (AVs), and the perception capabilities of AVs have been dramatically improved. Various sensors installed on…
Measuring and reducing the disequilibrium levels of dynamic networks through ride-sourcing vehicle data
Wei Ma, Sean Qian
Transportation systems are being reshaped by ride-sourcing and shared mobility services in recent years. The transportation network companies (TNCs) have been collecting high-granu…
Estimating multi-class dynamic origin-destination demand through a forward-backward algorithm on computational graphs
Wei Ma, Xidong Pi, Sean Qian
Transportation networks are unprecedentedly complex with heterogeneous vehicular flow. Conventionally, vehicle classes are considered by vehicle classifications (such as standard p…
Statistical inference of probabilistic origin-destination demand using day-to-day traffic data
Wei Ma, Zhen Qian
Recent transportation network studies on uncertainty and reliability call for modeling the probabilistic O-D demand and probabilistic network flow. Making the best use of day-to-da…
Estimating multi-year 24/7 origin-destination demand using high-granular multi-source traffic data
Wei Ma, Zhen, Qian
Dynamic origin-destination (OD) demand is central to transportation system modeling and analysis. The dynamic OD demand estimation problem (DODE) has been studied for decades, most…