Revealing the Influence Mechanism of Urban Built Environment on Online Car-Hailing Travel considering Orientation Entropy of Street Network

Table 2

Spatial econometric model selection.

Model	Spatial parameters	Basic form of the model	The influencing factors of travel volume in traffic zones
OLS			The built environment of the traffic zone
SAR			The built environment of the traffic zone and the DiDi travel volume in the adjacent traffic district
SEM			The spatial correlation between unobservable independent variables
SDM			The built environment of the traffic zone, the DiDi travel volume, and the built environment of the adjacent traffic zone
SDEM (spatial Durbin error model)			The correlation between independent variables of the built environment and the spatial correlation of unobservable variables