B.Sc. in Computer Science at University São Francisco, M.Sc. and D.Sc. in Computer Science in the Institute of Mathematics and Statistics at University of Sao Paulo.
Currently, I am an assistant professor in Faculty UnB Gama at University of Brasília. My main research interests are computational methods of optimization and algorithms.
Publications
E. G. Birgin, J. L. Gardenghi, D. S. Marcondes, J. M. Martínez. Accelerated derivative-free spectral residual method for nonlinear systems of equations, submitted. [PDF] [Code]
E. G. Birgin, J. L. Gardenghi, A. Laurain. Asymptotic bounds on the optimal radius when covering a set with minimum radius identical balls, Mathematics of Operations Research, to appear. [PDF] [Code] [Tables]
E. G. Birgin, J. L. Gardenghi, J. M. Martínez, S. A. Santos. On the solution of linearly constrained optimization problems by means of barrier algorithms. TOP, 2021. [PDF] [Code] [SharedIt]
J. L. Gardenghi, L. G. Pereira, S. M. Alcantara, R. M. C. Figueiredo, C. S. Ramos. Digitalization by Means of a Prototyping Process: The Case of a Brazilian Public Service. Information, 2020. [PDF]
E. G. Birgin, J. L. Gardenghi, J. M. Martínez, S. A. Santos. On the use of third-order models with fourth-order regularization for unconstrained optimization. Optimization Letters, 2019. [PDF] [Code] [SharedIt]
E. G. Birgin, J. L. Gardenghi, J. M. Martínez, S. A. Santos, Ph. L. Toint. Worst-case evaluation complexity for unconstrained nonlinear optimization using high-order regularized models. Mathematical Programming, 2017. [PDF] [SharedIt]
E. G. Birgin, J. L. Gardenghi, J. M. Martínez, S. A. Santos, Ph. L. Toint. Evaluation complexity for nonlinear constrained optimization using unscaled KKT conditions and high-order models. SIAM Journal on Optimization, 2016. [PDF]
J. L. Gardenghi, S. A. Santos. Métodos de regiões de confiança para resolução do problema de quadrados mínimos: implementação e testes numéricos. Trends in Applied and Computational Mathematics, 2013. [PDF]
Other publications
Chapters
R. M. C. Figueiredo, L. S. Melo, J. L. Gardenghi, R. A. D. Kosloski. Tecnologias disruptivas no contexto da transformação digital. Editora Atenas, 2020. [PDF]
Conferences
L. Santos, R. M. C. Figueiredo, R. Barbosa, A. Vincenzi, G. V. Pedrosa, and J. L. Gardenghi. Towards an Approach for Improving Exploratory Testing Tour Assignment based on Testers’ Profile. Proceedings of the 24th International Conference on Enterprise Information Systems - Volume 2: ICEIS, 2022.
R. M. C. Figueiredo, J. L. Gardenghi, L. Santos, R. Furtado, R. Barbosa, L. Boaventura, A. Modesto, and L. Martins. The Design of a Public Service Cost Model Tool to Evaluate Digital Transformation in Brazilian Government. Proceedings of the 24th International Conference on Enterprise Information Systems - Volume 2: ICEIS, 2022.
J. L. Gardenghi, M. A. G. Bardi. An Authentication Middleware for Squid Proxy-Cache: a Single Sign-on Approach. 12th International Conference on Computational Science and Its Applications, 2012. [PDF]