Is the Linear Modeling Technique Good Enough for Optimal Form Design? A Comparison of Quantitative Analysis Models

Table 3

The result of QTTI analysis.

Form element		Form type		Category grade (form type grade)		Partial correlation coefficient
				Complex	Simple
		𝑋11	Line		1.00
𝑋1	Top shape	𝑋12	Chamfer		0.54	0.26
		𝑋13	Fillet	−0.42
		𝑋21	Fillet	−0.11
𝑋2	Bottom shape	𝑋22	Chamfer		0.61	0.14
		𝑋23	Arc	−0.19
		𝑋31	Line		0.01
𝑋3	Function-keys arrangement	𝑋32	Symmetry	−0.37		0.16
		𝑋33	Irregular		0.65
		𝑋34	Grouping		0.48
		𝑋41	Cycle	−0.42
𝑋4	Arrow-key style	𝑋42	Ellipse		1.28	0.42
		𝑋43	Straight	−1.29
		𝑋51	Single color	−0.21
𝑋5	Color treatment	𝑋52	Noncolor segment		1.35	0.37
		𝑋53	Color segment	−1.06
		𝑋61	Normal partition	−0.20
𝑋6	Outline partition style	𝑋62	Fitting outline	−0.13		0.23
		𝑋63	Fitting surface		1.32

Constant = 3.74, 𝑅=0.55, 𝑅²=0.31.