题目：A Boundedly Rational User Equilibrium Model for the Traffic Assignment Problem
报告人： Dr. Yingyan Lou， Department of Civil, Construction and Environmental Engineering at the University of Alabama
报告内容摘要：
This research investigates flow distributions in static transportation networks with travelers’ boundedly rational route-choice behaviors. Under such behavior, users do not necessarily choose a shortest or cheapest route, when doing so does not reduce their travel time by a significant amount. A general path-based definition and a more restrictive link-based representation of boundedly rational user equilibrium (BRUE) are presented. The set of BRUE flow distributions are non-convex and always non-empty. The existence of alternative BRUE flow distributions implies uncertainties in the outcome of certain transportation policies and plans. Numerical experiments demonstrate that system performance may vary substantially within the BRUE set. The problems of finding best- and worst-case BRUE flow distributions are formulated and solved as mathematical programs with complementarity constraints. This research also explores robust approaches for transportation planning to guard against the worst-case scenario.
This research offers a new alternative for more realistically modeling of users’ route choices in general networks. It relaxes the dominance of the perfect rationality assumption in transportation planning, and leads to models and tools that are more realistic and accurate to help and guide in the analysis and evaluation of transportation planning decisions.
报告人简介：
Dr. Yingyan Lou is an assistant professor in the Department of Civil, Construction and Environmental Engineering at the University of Alabama. She received two bachelor degrees in both Engineering Science and Economics from Peking (Beijing) University, China, in 2005; and earned her master’s and doctor’s degree in Civil Engineering from the University of Florida in 2007 and 2009 respectively.
Dr. Lou’s primary research interest is transportation systems modeling and optimization, with applications in various transportation planning, management and operations problems, such as system-wide congestion pricing, traffic-responsive tolling for managed-lane operations, dynamic origin-destination demand estimation, robust transportation network design, freeway incident response planning, and infrastructure asset management. She also has a keen interest in traffic flow theory and traffic operations. Dr. Lou has published seven papers in prestigious transportation journals. She was awarded the Pikarsky Award for Outstanding Ph.D. Dissertation in Science and Technology by the Council of University Transportation Centers in 2010. She has also won several paper awards and numerous scholarships.
主持人：黄克服 副教授
时 间：6月4日（周五）下午2:00
地 点：力学楼434会议室
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