An Allometric Algorithm for Fractal-Based Cobb-Douglas Function of Geographical Systems

Table 1

The input variables and output variable for quantitative analysis of the public transportation of China’s cities (2006–2012).

Type	Variable	Abbreviation	Measurement unit	Symbol
Input (independent variables)	Year-end number of public vehicles in operation	Vehicle number	unit
	Total length of roads in operation	Road length	km
Output (dependent variable)	Volume of passengers transported by public traffic vehicles	Passenger volume	10000 person-times