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A relax-and-fix with fix-and-optimize heuristic applied to multi-level lot-sizing problems
(2015-10-29)
In this paper, we propose a simple but efficient heuristic that combines construction and improvement heuristic ideas to solve multi-level lot-sizing problems. A relax-and-fix heuristic is firstly used to build an initial ...
Impact analysis of setup carryover and crossover on lot sizing problems
(2019-01-01)
This paper presents a literature classification and a detailed computational study analysing the impact of considering the possibility of setup carryover and crossover when solving the lot sizing problem. This problem is ...
Estudos em problemas de dimesionamento de lotes com preparações carryover e crossover
(Universidade Estadual Paulista (Unesp), 2017-03-13)
Os problemas de dimensionamento de lotes consistem em determinar a quantidade de itens que devem ser produzidos em todos os períodos de um horizonte de planejamento. Em geral, são considerados custos de produção, preparação ...
Improved bounds for the traveling umpire problem: A stronger formulation and a relax-and-fix heuristic
(Elsevier Science BvAmsterdamHolanda, 2014)
Solution approaches for the soft drink integrated production lot sizing and scheduling problem
(Elsevier B.V., 2009-07-16)
In this paper we present a mixed integer programming model that integrates production lot sizing and scheduling decisions of beverage plants with sequence-dependent setup costs and times. The model considers that the ...
Solution approaches for the soft drink integrated production lot sizing and scheduling problem
(Elsevier B.V., 2009-07-16)
In this paper we present a mixed integer programming model that integrates production lot sizing and scheduling decisions of beverage plants with sequence-dependent setup costs and times. The model considers that the ...
Joint rolling-horizon scheduling of materials processing and lot-sizing with sequence-dependent setups
(Springer, 2007-08-01)
A lot sizing and scheduling problem from a foundry is considered in which key materials are produced and then transformed into many products on a single machine. A mixed integer programming (MIP) model is developed, taking ...
Integrated planning for planting and harvesting sugarcane and energy-cane for the production of sucrose and energy
(Elsevier B.V., 2021-05-01)
The main products obtained from sugarcane for the global market are sugar, ethanol and energy. Although the demand for these products is high, in Brazil there is no longer space to expand sugarcane cultivation due to other ...
Joint rolling-horizon scheduling of materials processing and lot-sizing with sequence-dependent setups
(Springer, 2007-08-01)
A lot sizing and scheduling problem from a foundry is considered in which key materials are produced and then transformed into many products on a single machine. A mixed integer programming (MIP) model is developed, taking ...