Investment Decision Support for Engineering Projects Based on Risk Correlation Analysis

Table 2

Attributes used in CBR prediction model.

Input Attribute Number	Attribute	Class	Range
𝑅1	Total area of the building	3	[330 m^2, 1381 m^2)
			[1381 m^2, 2432 m^2)
			[2432 m^2, 3484 m^2]
𝑅2	Ratio of the typical floor area	2	[0.07, 0.16] (0.16, 0.26]
	to the total area of the building
𝑅3	Ratio of the footprint area to	2	[0.07, 0.19] (0.19, 0.30]
	the total area of the building
𝑅4	Number of floors	2	(4, 5, 6) (7, 8)
𝑅5	Type of overhang design	2	No overhang or one way
𝑅6	Foundation system	3	Pier, wall, slab
𝑅7	Type of floor structure	2	Cast in situ concrete, precast concrete
𝑅8	Location of the core	2	At the sides, in the middle
Output	Cost of the structural system; per m^2	5	($30/m^2, $56/m^2]
			($56/m^2, $82/m^2]
			($82/m^2, $108/m^2]
			($108/m^2, $134/m^2]
			($134/m^2, $160/m^2]