Operations Research

NOVA Math > Research Groups > Operations Research

About

The Operations Research group develops its activity with a focus on optimization, modeling, algorithmic development and implementation. Within nonlinear optimization, fractional quadratic problems, semidefinite programming, complementarity problems, derivative-free and multiobjective optimization are some of the areas in which the group members had a relevant impact. The group also works in combinatorial optimization, with impact in facility and hub location problems, project scheduling, timetabling, and facility layout optimization. There is a strong component of applications and collaboration with industry, requiring not only algorithmic development but also modelling skills. Contributions appear in supply chain design, reverse logistics, biology of conservation, health and ageing related problems.

Maria Isabel Azevedo Rodrigues Gomes

Operations Research Coordinator

Team

Publications

A block active set algorithm with spectral choice line search for the symmetric eigenvalue complementarity problem
2017, APPLIED MATHEMATICS AND COMPUTATION, Bras,CP;Fischer,A;Judice,JJ;Schoenefeld,K;Seifert,S
On semidefinite least squares and minimal unsatisfiability
2017, DISCRETE APPLIED MATHEMATICS, Anjos,MF;Vieira,MVC
Algorithmic design of a noise-resistant and efficient closed-loop deep brain stimulation system: A computational approach
2017, PLOS ONE, Karamintziou,SD;Custodio,AL;Piallat,B;Polosan,M;Chabardes,S;Stathis,PG;Tagaris,GA;Sakas,DE;Polychronaki,GE;Tsirogiannis,GL;David,O;Nikita,KS
Mathematical optimization approaches for facility layout problems: The state-of-the-art and future research directions
2017, EUROPEAN JOURNAL OF OPERATIONAL RESEARCH, Anjos,MF;Vieira,MVC
A decomposition approach for the p-median problem on disconnected graphs
2017, Computers and Operations Research, Agra,A;Cerdeira,JO;Requejo,C
Meeting species persistence targets under climate change: A spatially explicit conservation planning model
2017, Diversity and Distributions, Alagador,D;Cerdeira,JO
A multi-period facility location problem with modular capacity adjustments and flexible demand fulfillment
2017, COMPUTERS & INDUSTRIAL ENGINEERING, Correia,I;Melo,T
Sustainable supply chain design and planning: the importance of life cycle scope definition
2017, 27TH EUROPEAN SYMPOSIUM ON COMPUTER AIDED PROCESS ENGINEERING, PT A, Mota,B;Carvalho,A;Gomes,MI;Barbosa Povoa,A
Selfie Aging Index: An Index for the Self-assessment of Healthy and Active Aging
2017, FRONTIERS IN MEDICINE, Goncalves,J;Gomes,MI;Fonseca,M;Teodoro,T;Barros,PP;Botelho,MA
A Bi-objective two step Simulated Annealing Algorithm for Production Scheduling
2017, Computer Aided Chemical Engineering, Chibeles Martins,N;Marques,A;Pinto Varela,T

Projects

The Effects of Portuguese Colonialism in Africa: Justice, Electricity and Transport Infrastructures
FCT - Fundação para a Ciência e a Tecnologia, I.P., Jorge Orestes Cerdeira
Novel therapeutic approaches to target GNE Myopathy
European Joint Programme on Rare Diseases (EJP RD), Regina Bispo and Isabel Gomes
AI-4-MUFF: Artificial intelligence on the management of the degree of readiness in urban firefighting
FCT - Fundação para a Ciência e a Tecnologia, I.P., Isabel Gomes, Jorge Orestes Cerdeira, Filipe Marques,...
Altera√ß√Ķes clim√°ticas e seu impacto em florestas de pinheiro ao longo da costa oeste portuguesa: o caso de duas pragas recentemente emergidas
FCT - Fundação para a Ciência e a Tecnologia, I.P., Jorge Orestes Cerdeira
BoostDFO: Improving the performance and moving to newer dimensions in Derivative-Free Optimization
FCT - Fundação para a Ciência e a Tecnologia, I.P., Ana Luísa Custódio, Maria do Carmo Brás, Rohollah...
Estudo prévio sobre a implementação da recolha seletiva em Portugal Continental insidindo em especial sobre o fluxo dos bioresíduos
APA - Agência Portuguesa do Ambiente, Isabel Gomes
Biodiversity Conservation, Global Change and Uncertainties: Reconciling Biodiversity Persistence and Human Development upon Dynamic Environments (RECONCILE)
FCT - Fundação para a Ciência e a Tecnologia, I.P., Jorge Orestes Cerdeira
MiMaMathematics in the Making
Lifelong Learning Programme of the European Union Project (EU), Susana Baptista, Nelson Chibeles Martins,...
Sparse and Smoothing Methods for Nonlinear Optimization of Complex Models
FCT - Fundação para a Ciência e a Tecnologia, I.P., Ana Luísa Custódio
Species Performance Modeling Algorithm (S-PerforMA)
FCT - Fundação para a Ciência e a Tecnologia, I.P., Jorge Orestes Cerdeira

Software

    • a solver for constrained or unconstrained derivative-free optimization problems::¬†SID-PSM
    • a solver for multiobjective derivative-free optimization problems:¬†DMS¬†,¬†BoostDMS
    • a solver suited for global derivative-free constrained optimization:¬†GLODS
    • a solver suited for global derivative-free multiobjective constrained optimization:¬†MultiGLODS
    • an open-source application, licensed under the GPL v3, designed to select connectivity linkages for distinct types of habitats, under a cost-efficient protocol:¬†MulTyLink
    • a package for selecting variable subsets. Contributed packages of The Comprehensive R Archive Network (CRAN):¬†Subselect.¬†CHECK¬†DOWNLOADS¬†HERE.