کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
9664019 1446253 2005 21 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
A column generation approach for solving a non-temporal forest harvest model with spatial structure constraints
موضوعات مرتبط
مهندسی و علوم پایه مهندسی کامپیوتر علوم کامپیوتر (عمومی)
پیش نمایش صفحه اول مقاله
A column generation approach for solving a non-temporal forest harvest model with spatial structure constraints
چکیده انگلیسی
We present an integer programming model for a non-temporal forest harvest problem with constraints on the clearcut size and on the total area of old growth patches with a minimum size requirement. The model has a very large number of variables for operationally sized problems which precludes the use of exact solution methods. We propose column generation to solve the linear relaxation of the model and a linear programming rounding heuristic to obtain a solution to the model. Column generation may not solve exactly the linear relaxation because the optimization problems associated with the pricing subproblems are NP-hard. We present heuristics for these subproblems. Computational results for test instances and for a real life instance that corresponds to a large Portuguese forest are reported.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: European Journal of Operational Research - Volume 161, Issue 2, 1 March 2005, Pages 478-498
نویسندگان
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