On the multisource hyperplanes location problem to fitting set of points. (April 2021)

• Record Type: Journal Article
• Authors: Blanco, V.; Japón, A.; Ponce, D.; Puerto, J.
• Is Part Of: Computers & operations research. Volume 128(2021)
• Publication Date: 2021-04
• Subjects: Hyperplanes location -- Mixed Integer Non Linear programming -- Column generation; 52C35 -- 90B85 -- 90C11 -- 90C30; Operations research -- Periodicals; Electronic digital computers -- Periodicals; 004.05
• DOI: 10.1016/j.cor.2020.105124
• Languages: English
• ISSNs: 0305-0548

Abstract

Highlights: Multifacility location of hyperplanes. Mixed integer programming formulations. Set partitioning formulation. Branch and Price algorithm. Abstract: In this paper we study the problem of locating a given number of hyperplanes minimizing an objective function of the closest distances from a set of points. We propose a general framework for the problem in which norm-based distances between points and hyperplanes are aggregated by means of ordered median functions. A compact Mixed Integer Linear (or Non Linear) programming formulation is presented for the problem and also an extended set partitioning formulation with a huge number of variables is derived. We develop a column generation procedure embedded within a branch-and-price algorithm for solving the problem by adequately performing its preprocessing, pricing and branching. We also analyze geometrically the optimal solutions of the problem, deriving properties which are exploited to generate initial solutions for the proposed algorithms. Finally, the results of an extensive computational experience are reported. The issue of scalability is also addressed showing theoretical upper bounds on the errors assumed by replacing the original datasets by aggregated versions.