Implementing Global Constraints as Graphs of Elementary Constraints

Implementing Global Constraints as Structured Networks of Elementary Constraints

Global constraints are cardinal concepts of CLP(FD), a constraint programming language. They are means to find a set of integers that satisfy certain relations. The fact that defining global constraints often requires the knowledge of a specification language makes sharing constraints between scientists and programmers difficult. Nicolas Beldiceanu presented a theory that could solve this probl...

Production Constraints Modelling: A Tactical Review Approach

A constraint is a limitation or a restriction that poses a threat to the performance and efficiency of a system. This paper presented a tactical review approach to production constraints modeling. It discussed the theory of constraints (TOC) as a thinking process and continuous improvement strategy to curtail constraints in other to constantly increase the performance and efficiency of a system...

Global Constraints as Graph Properties on a Structured Network of Elementary Constraints of the Same Type

This report introduces a classification scheme for the global constraints. This classification is based on four basic ingredients from which one can generate almost all existing global constraints and come up with new interesting constraints. Global constraints are defined in a very concise way, in term of graph properties that have to hold, where the graph is a structured network of same eleme...

Supply chain network design with multi- mode demand based on acceptance degree of fuzzy constraints violated

This paper designs a mathematical model for supply chain network design problem including plants, distributors and customers in fuzzy environment. Each plant and distributor has several levels capacities. A multi-mode demand strategy is considered for the customers where only one of the modes is to be selected for each customer. Considering the acceptance degree of fuzzy constraints violated, a...

Health Tourism: Opportunities, Constraints, Obstacles and Solutions