ANN Based Approach for Estimation of Construction Costs of Sports Fields
Table 1
Characteristics of dependent variables and independent variables considered initially to be used in the course of a regression analysis (source: own study).
Description of the variable
Variable type
Values
Total cost of construction works
Quantitative
Cost given in thousands of PLN
Playing area of the sports field
Quantitative
Surface area measured in m2
Location of the facility
Quantitative
Urban area (big cities, medium cities, small cities) or outside the urban area (villages)
Number of sport functions
Quantitative
Number of sports that can be played in the field
Type of the playing field surface
Categorical
Natural or artificial grass
Quality standard of the playing field’s surface
Categorical
Quality standard assessed according to the available information in the tender documentation