Consider the following Cutting Stock problem with three orders: size 6-5 rolls, size 10-3 rolls, size...
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Consider the following Cutting Stock problem with three orders: size 6-5 rolls, size 10-3 rolls, size 14-5 rolls. The ordered rolls have to be cut from larger rolls of size 26. (a) (4 points) Formulate the IP problem that minimizes the the number of used roll of size 26, satis- fying the orders. The decision variables should be the number of rolls of each size in each larger roll. (b) (4 points) Formulate the IP problem using the set covering formulation where the decision vari- ables indicate which cutting patterns to use. (c) (4 points) Given initial cutting patterns: [5, 0,0], [0, 2, 0], [0, 0, 1], formulate and solve the master problem with a solver or method of your choice, obtain the solution and the dual variables. (d) (4 points) Using the obtained dual variables, formulate and solve the subproblem with a solver or method of you choice and obtain a new pattern. (e) (4 points) Explain whether you can stop or continue the algorithm and what would be the stopping criteria. Consider the following Cutting Stock problem with three orders: size 6-5 rolls, size 10-3 rolls, size 14-5 rolls. The ordered rolls have to be cut from larger rolls of size 26. (a) (4 points) Formulate the IP problem that minimizes the the number of used roll of size 26, satis- fying the orders. The decision variables should be the number of rolls of each size in each larger roll. (b) (4 points) Formulate the IP problem using the set covering formulation where the decision vari- ables indicate which cutting patterns to use. (c) (4 points) Given initial cutting patterns: [5, 0,0], [0, 2, 0], [0, 0, 1], formulate and solve the master problem with a solver or method of your choice, obtain the solution and the dual variables. (d) (4 points) Using the obtained dual variables, formulate and solve the subproblem with a solver or method of you choice and obtain a new pattern. (e) (4 points) Explain whether you can stop or continue the algorithm and what would be the stopping criteria.
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Problem 4 Cutting Stock and Column Generation a IP Formulation with Decision Variables for Rolls in ... View the full answer
Related Book For
Income Tax Fundamentals 2013
ISBN: 9781285586618
31st Edition
Authors: Gerald E. Whittenburg, Martha Altus Buller, Steven L Gill
Posted Date:
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