Papers by Paulo Morelato Franca
2011 IEEE Congress of Evolutionary Computation (CEC), 2011
Page 1. A Hybrid Heuristic Approach to Solve the Multi Level Capacitated Lot Sizing Problem Claud... more Page 1. A Hybrid Heuristic Approach to Solve the Multi Level Capacitated Lot Sizing Problem Claudio Fabiano Motta Toledo∗, Renato Resende Ribeiro de Oliveira, Paulo Morelato França ∗ University of São Paulo, Institute ...
Porto Alegre Rs Brazil Ieee Computer Society 28 30 May 2007 Porto Alegre Rs Brazil, 2007
Pesquisa Operacional, 2007
Pesquisa Operacional, 2007
Proceedings of the 16th IFAC World Congress, 2005, 2005
Computers & Operations Research, 1997
This paper considers the lot-sizing problem i n multi-stage production settings with capacity-con... more This paper considers the lot-sizing problem i n multi-stage production settings with capacity-constrained resources. This problem deals with the determination o f a production plan for the end item and its components in order to meet the forecast demand in each period of a planning horizon. The production plan should minimize the sum of production, setup and inventory costs. A
2005 IEEE Russia Power Tech, 2005
Transportation Science, 1982
International Journal of Production Research, 2009
This paper introduces an evolutionary algorithm as a procedure to solve the Synchronized and Inte... more This paper introduces an evolutionary algorithm as a procedure to solve the Synchronized and Integrated Two-Level Lot Sizing and Scheduling Problem (SITLSP). This problem can be found in some industrial settings, mainly soft drink companies, where the production process involves two interdependent levels with decisions concerning raw material storage and soft drink bottling. The challenge is to simultaneously determine the lot-sizing and scheduling of raw materials in tanks and soft drinks in bottling lines, where setup costs and times depend on the previous items stored and bottled. A multi-population genetic algorithm approach with a novel representation of solutions for individuals and a hierarchical ternary tree structure for populations is proposed. Computational tests include comparisons with an exact approach for small-tomoderate sized instances and with real-world production plans provided by a manufacturer.
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Papers by Paulo Morelato Franca