Collaborative Decision-Making in Product Design: An Interactive Multiobjective Approach

Table 1

Objective function classification.

	Class 1S	Small is better (minimization)
Soft	Class 2S	Larger is better (maximization)
	Class 3S	Value is better
	Class 4S	Range is better
	Class 1H	Must be smaller (𝑓𝑙≤𝑡𝑙,max)
Hard	Class 2H	Must be larger (𝑓𝑙≥𝑡𝑙,min)
	Class 3H	Must be equal (𝑓𝑙=𝑡𝑙,val)
	Class 4H	Must be in range (𝑡𝑙,min≤𝑓𝑙≤𝑡𝑙,max)