Reformulations in mathematical programming : definitions and systematics
RAIRO - Operations Research - Recherche Opérationnelle, Tome 43 (2009) no. 1, pp. 55-85.

A reformulation of a mathematical program is a formulation which shares some properties with, but is in some sense better than, the original program. Reformulations are important with respect to the choice and efficiency of the solution algorithms; furthermore, it is desirable that reformulations can be carried out automatically. Reformulation techniques are widespread in mathematical programming but interestingly they have never been studied under a unified framework. This paper attempts to move some steps in this direction. We define a framework for storing and manipulating mathematical programming formulations and give several fundamental definitions categorizing useful reformulations in essentially four types (opt-reformulations, narrowings, relaxations and approximations). We establish some theoretical results and give reformulation examples for each type.

DOI : 10.1051/ro/2009005
Classification : 90C11, 90C26, 90C27, 90C30, 90C99
Mots-clés : reformulation, formulation, model, linearization, mathematical program
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Liberti, Leo. Reformulations in mathematical programming : definitions and systematics. RAIRO - Operations Research - Recherche Opérationnelle, Tome 43 (2009) no. 1, pp. 55-85. doi : 10.1051/ro/2009005. http://archive.numdam.org/articles/10.1051/ro/2009005/

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