Mathematical programming formulations for piecewise polynomial functions

Bjarne Grimstad () and Brage R. Knudsen ()
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Bjarne Grimstad: NTNU
Brage R. Knudsen: NTNU

Journal of Global Optimization, 2020, vol. 77, issue 3, No 2, 455-486

Abstract: Abstract This paper studies mathematical programming formulations for solving optimization problems with piecewise polynomial (PWP) constraints. We elaborate on suitable polynomial bases as a means of efficiently representing PWPs in mathematical programs, comparing and drawing connections between the monomial basis, the Bernstein basis, and B-splines. The theory is presented for both continuous and semi-continuous PWPs. Using a disjunctive formulation, we then exploit the characteristic of common polynomial basis functions to significantly reduce the number of nonlinearities, and to suggest a bound-tightening technique for PWP constraints. We derive several extensions using Bernstein cuts, an expanded Bernstein basis, and an expanded monomial basis, which upon a standard big-M reformulation yield a set of new MINLP models. The formulations are compared by globally solving six test sets of MINLPs and a realistic petroleum production optimization problem. The proposed framework shows promising numerical performance and facilitates the solution of PWP-constrained optimization problems using standard MINLP software.

Keywords: Piecewise polynomials; Splines; Mixed integer programming; Nonlinear programming; Disjunctions (search for similar items in EconPapers)
Date: 2020
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Citations: View citations in EconPapers (1)

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DOI: 10.1007/s10898-020-00881-4

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