Nonlinear Systems Optimization and Statistics group  
 
    
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  DFO - Derivative Free Optimization  
 

 

   

There are several objectives to be accomplished. They include better ways of dealing with constraints, the introduction of discrete variables and the implementation of a stochastic approach to improve local search. Problems in Astrophysics, as well as a particular Biological Process design are to be addressed. Derivative-free software will be improved and made available to the research community.

 

Research Team

 

Edite M.G.P. Fernandes
João L.H. Matias
A. Ismael F. Vaz
Isabel A.C.P. Espírito Santo

 

   

Publications

 

Matias, J.L.H.; Fernandes, E.M.G.P., A derivative free penalty technique and the PNL-Pesdir tool, XXVIII Congreso de Estadística e Investigación Operativa, ISBN: 84-689-0438-4, CD-ROM, 12 pp, Cádiz, 2004.

Matias, J.L.H.; Fernandes, E.M.G.P., Métodos de pesquisa directa com técnicas de penalidade, I Congresso de Estatística e Investigação Operacional da Galiza e Norte de Portugal/VII Congreso Galego de Estatística e Investigación de Operacións, ISBN: 972-99841-0-7, CD-ROM, 6 pp, Guimarães, 2005.

Espírito-Santo, I.A.C.P., Fernandes, E.M.G.P., Araújo, M.M., Ferreira, E.C., Optimization and simulation of secondary settler models, 6th. WSEAS International Conference on Simulation, Modelling and Optimization, A.M. Madureira (Ed.), ISSN: 1790-5117, ISBN: 960-8457-53-X, CD-ROM, 240-245, 2006.

Espírito-Santo, I.A.C.P.; Fernandes, E.M.G.P.; Araújo, M.M.; Ferreira, E.C., On the secondary settler models robustness by simulation, WSEAS Transactions on Information Science and Applications, ISSN: 1790-0832, Issue 12, Vol. 3, 2323-2330, 2006 (in SCOPUS) nc=(-,-,3).

Espírito Santo, I.A.C.P.; Fernandes, E.M.G.P.; Araújo, M.M.; Ferreira, E.C., Cost minimization of a WWTP using an augmented Lagrangian pattern search based solver, 10 th. IWA Specialised Conference on Design, Operation and Economics of Large Wastewater Treatment Plants, 17-20, 2007.

Espírito Santo, I.A.C.P.; Fernandes, E.M.G.P.; Araújo, M.M.; Ferreira, E.C., An augmented Lagrangian pattern search method for optimal WWTP designs, 6 th. WSEAS International Conference on System Science and Simulation in Engineering, Venice, 6 pp, 2007.

 

   

Theses

 

   

Software

 

   

Poster

     

 

 
 
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