“…Unlike exponential function as a traditional statistical method that follows a constrained statistical assumption and is usually pre-defined, machine learning methods, such as the XGBoost model used in this research, are data-driven and are not statistically constrained, which will provide more sophisticated results. Many other researchers have also attempted to uncover the nonlinear built effects on travel patterns using machine learning methods, including driving distance (Ding et al, 2018), metro ridership , usage of shared mobility services (Cheng et al, 2023;Jin, Cheng, Zhang, et al, 2022), and public transit ridership (Chen et al, 2021). Relaxing the assumption of linearity using a machine learning method has several advantages in travel behavior analysis (Cheng et al, 2019;Liu et al, 2021;Xu et al, 2021;Zhang et al, 2020).…”