A common feature of set covering, knapsack, and location problems is that all of them use mixed integer programming formulation requiring no $0-1$ variables.

Question

Quizplus · Accepted Answer

Set covering, knapsack, and location problems often use $0-1$ variables in their mixed integer programming formulations to represent binary decisions, such as whether to include an item in the knapsack or whether to open a facility at a certain location.

A Common Feature of Set Covering, Knapsack, and Location Problems 0−10-10−1

A Common Feature of Set Covering, Knapsack, and Location Problems $0-1$