The p-center problem: Using equivalent instances to obtain better results
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Alfredo Marín
discrete location models with customers’ choice and path improvements
We examine several facility location problems within a directed network involving two distinct cost types. The first, referred to as the customer cost, represents the expense each customer considers when selecting a facility to obtain service (e.g., delivery time or a measure of quality degradation). Consequently, once facilities are established, each customer chooses the one … Read more
Solving the uncapacitated multiple allocation hub location problem by means of a dual-ascent technique
This problem deals with the uncapacitated multiple allocation hub location problem. The dual problem of a four-indexed formulation is considered and a heuristic method, based on a dual-ascent technique, is designed. This heuristic, which is reinforced with several specifical subroutines and does not require any external linear problem solver, is the core tool embedded in … Read more