XIAOTONG GUO

SHARED MOBILITY

2018/07 - Present

With Professor Jinhua Zhao, Professor Hongmou Zhang, Professor Hai Wang, Nicholas S. Caros, Qingyi Wang, Ao Qu, Andreas Haupt

Massachusetts Institute of Technology, Peking University & Singapore Management University

ROBUST VEHICLE REBALANCING

  • Proposed the matching-integrated vehicle rebalancing (MIVR) model by incorporating matching component to produce better rebalancing decisions
  • Constructed the robust MIVR model and designed problem-specific uncertainty sets
  • Introduced data-driven predictive prescriptions into solving the MIVR model with demand uncertainty
  • Compared the MIVR model with two benchmark models using simulations with real-world demand and travel time data
  • Compared the MIVR model with LSTM-based prediction module, robust MIVR model, and data-driven MIVR model

SHARED MOBILITY INEFFICIENCY & MARKET STURUCTURE

  • Quantified the efficiency loss induced by the market segmentation in the shared mobility market
  • Constructed theoretical model for a duopoly shared mobility market efficiency based on simulation results
  • Proposed a unified framework for shared mobility market and four market structures to dissolve efficiency losses due to market segmentation

UNDERSTANDING DRIVERS' MULTI-HOMING BEHAVIOR

  • Taxonomized and estimated perceived switching and multi-homing frictions for drivers on mobility platforms
  • Proposed a structural model of driver labor supply, and estimate multi-homing and switching cost based on real-world survey data collected in Jakarta, Indonesia

MOBILITY SHARING WITH TIME FLEXIBILITY

  • Incorporated traffic congestion and time flexibility, which indicates travelers' expected service time window, into the ridesharing system.
  • Proposed a fast-converged iterative algorithm to solve this optimization model with the high nonlinearity induced by the changeable travel time and travelers’ behaviors
  • Discussed different simulation results using UE and SO traffic assignment approaches

PUBLIC TRANSPORTATION

2019/09 - Present

With Professor Haris N. Koutsopoulos , Professor Shenhao Wang , Baichuan Mo , Anson Stewart , John Attanucci, Nicholas S. Caros

Massachusetts Institute of Technology, Northeastern University & University of Florida

ROBUST TRANSIT NETWORK DESIGN

  • Proposed a optimzation model for solving the Transit Frequency Setting Problem (TFSP) under a single line setting
  • Introduced Robust Optimization (RO) into the TFSP to handle the demand uncertainty, which is amplified by the COVID-19
  • Designed a Transit Downsizing (TD) approach to reduce the demand dimensionality for transit problems

BUS PERFORMANCE EVALUATION & VISUAILIZATION

  • Designed metrics bus performance metrics regarding to bus operations and passengers' level of service
  • Proposed a generic framework for calculating bus performance metrics based on AVL, APC and GTFS data
  • Constructed an open-source interactive web-based visulization map, namely ROVE, for visualizing bus performance metrics

SCHOOL BUS ROUTING PROBLEM

2017/09 - 2019/05

With Professor Samitha Samaranayake

Cornell University

SCHOOL BUS ROUTING PROBLEM WITH ALTERNATIVE MODES

  • Introduced alternative mode options for students in the school bus routing problem to reduce scheduling cost
  • Modeled the school bus routing problem as a simplified integer linear programming through the shareability network framework
  • Proposed node and edge compression techniques for the shareability network to adapt the method for large-scale SBRP instances