Algorithms for the multiperiod workforce scheduling and routing problem with dependent tasks

Detalhes bibliográficos
Ano de defesa: 2020
Autor(a) principal: Pontes, Vitor Notini
Orientador(a): Não Informado pela instituição
Banca de defesa: Não Informado pela instituição
Tipo de documento: Dissertação
Tipo de acesso: Acesso aberto
Idioma: eng
Instituição de defesa: Universidade Federal de Lavras
Programa de Pós-Graduação em Ciência da Computação
UFLA
brasil
Departamento de Ciência da Computação
Programa de Pós-Graduação: Não Informado pela instituição
Departamento: Não Informado pela instituição
País: Não Informado pela instituição
Palavras-chave em Português:
Link de acesso: http://repositorio.ufla.br/jspui/handle/1/45585
Resumo: Logistics problems lie at the core of industries' everyday operations. These types of problems are also one of the main points of interest in the Operations Research field of study. In recent decades, a class of combinatorial optimization problems, named Workforce Scheduling and Routing Problems (WSRP), has gained significant attention from researchers. In this document, a recently proposed WSRP is studied: in the Multiperiod Workforce Scheduling and Routing Problem with Dependent Tasks (MWSRPDT) a given company provides services by means of mobile teams. Service requests are known beforehand and each service is composed of one or more activities, where one activity may depend on the completion of another. A feasible schedule must be provided where all requested activities are completed in the minimum amount of days while respecting existing dependencies. Two hybrid exact-heuristic approaches based on a Mixed-Integer Programming formulation are proposed. Several new upper bounds for a set of instances obtained from the literature are discovered.