A Branch-and-Price Approach for a Ship Routing Problem ... - gerad

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Branching

• Arcs in the network

• Aggressive 1-branch

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Branching • Arcs in the network • Aggressive 1-branch 18

Implementation Issues • Pricing problem: exact or heuristically? • Difficult to get a feasible solution of the model: relax and penalize constraints? • Cycles in the compartment sub problem (generates redundant columns) 19

Page 1 and 2: A Branch-and-Price Approach for a S
Page 3 and 4: Practical Application Oil Company
Page 5 and 6: Practical Application • There is
Page 7 and 8: Inventory levels Upper Alarm Zone P
Page 9 and 10: Notation (Christiansen, 1998) • (
Page 11 and 12: Mathematical Formulation (1) min
Page 13 and 14: Mathematical Formulation (3) ∑∑
Page 15 and 16: Branch-and-Price Framework Add init
Page 17: Compartment Sub problem s • Short
Page 21: Questions? 21

A Branch-and-Price Approach for a Ship Routing Problem ... - gerad

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