NDLI: Performance de dois solvers na Resolução da Metaheurística Fix and Optimize Aplicado ao Problema de High School Timetabling

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Performance de dois solvers na Resolução da Metaheurística Fix and Optimize Aplicado ao Problema de High School Timetabling

Content Provider	Semantic Scholar
Author	Souza, Alisson Segatto De Pécora, José Eduardo Loch, Gustavo Valentim Fressato, Adriana Alvez
Copyright Year	2017
Abstract	O problema da Grade Horaria Escolar do Ensino Medio (High Scholl Timetabling – HSTT) consiste em construir a escala semanal de uma instituicao de ensino. O problema e caracterizado por um grande numero de variaveis e restricoes, fazendo que para instancias de medio e grande porte torna-se impossivel resolve-lo manualmente, ou em alguns casos ate metodos exatos sao incapazes de encontrar boas solucoes em um tempo computacional viavel, obrigando os pesquisadores adotarem o uso de heuristicas. Neste trabalho testaremos dois solvers de programacao inteira mista para a solucao da heuristica de fix-and-optimize. Esta heuristica e um metodo que consiste em fixar uma parte das variaveis, criando subproblemas muito menores, possibilitando sua solucao atraves de metodos exatos e entao repetindo o processo de fixacao ate todas as variaveis serem deixadas livres para a otimizacao. Para solucionar a parte exata da heuristica usaremos os solvers GUROBI 7.0.2 e CPLEX 12.6.2 e entao comparar os resultados para avaliar qual seria a melhor opcao a ser usada neste tipo de problema. Como resultado o solver GUROBI teve um melhor desempenho em quatro das cinco instancias estudadas.
File Format	PDF HTM / HTML
Alternate Webpage(s)	https://eventos.ufpr.br/smne/SMNE2017/paper/viewFile/663/254
Language	English
Access Restriction	Open
Content Type	Text
Resource Type	Article

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