Combining population-based and exact methods for multi-level capacitated lot-sizing problems
نویسندگان
چکیده
منابع مشابه
Combining Population-Based and Exact Methods for Multi-Level Capacitated Lot Sizing Problems
We present an ant-based algorithm to solve multi-level capacitated lot sizing problems. We apply a hybrid approach where we use the ant system to optimize the decomposition of the problem into smaller subproblems. These subproblems containing only a few items and periods are solved using CPLEX. Then the overall solution is derived by consolidating the partial solutions. This hybrid approach pro...
متن کاملModels and methods for capacitated lot-sizing problems
This is a summary of the author’s PhD thesis supervised by Philippe Chrétienne and Safia Kedad-Sidhoum and defended in December 2005 at the Université Pierre et Marie Curie (Paris VI). The thesis is written in French and is available from http://absi.nabil.free.fr/ABSI-Thesis.pdf. This work mainly deals with multi-item capacitated lot-sizing problems with setup times, shortages on demand and sa...
متن کاملProgressive Interval Heuristics for Multi-Item Capacitated Lot-Sizing Problems
We consider a family of N items that are produced in, or obtained from, the same production facility. Demands are deterministic for each item and each period within a given horizon of T periods. If in a given period an order is placed, setup costs are incurred. The aggregate order size is constrained by a capacity limit. The objective is to find a lot-sizing strategy that satisfies the demands ...
متن کاملFix-and-optimize and variable neighborhood search approaches for multi-level capacitated lot sizing problems ¬リニ
In this paper, a new fix-and-optimize (FO) approach is proposed for two dynamic multi-level capacitated lot sizing problems (MLCLSP), the MLCLSP without setup carryover and the MLCLSP with setup carryover. Given an MIP model of a lot sizing problem, the approach iteratively solves a series of subproblems of the model until no better solution can be found. Each sub-problem re-optimizes a subset ...
متن کاملProbabilistic Analysis of Multi-Item Capacitated Lot Sizing Problems
This paper conducts a probabilistic analysis of an important class of heuristics for multiitem capacitated lot sizing problems. We characterize the asymptotic performance of so-called progressive interval heuristics as T , the length of the planning horizon, goes to infinity, assuming the data are realizations of a stochastic process of the following type: the vector of cost parameters follows ...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: International Journal of Production Research
سال: 2006
ISSN: 0020-7543,1366-588X
DOI: 10.1080/00207540600620963