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Welcome to the ORCS Lab
Welcome to the Laboratory of Operational Research and Complex Systems. Feel free to explore the website and get to know our projects and the people behind the algorithms.
ORCS Lab - Optimisation, Data Science and Complex Systems
Research
Research in the ORCS Lab focuses mainly on the development and application of optimisation methods to complex systems; on data science and statistical modeling; and on the applications of computational intelligence to large-scale power and energy systems.

Latest News

ExpDE version 0.1 lauched

The first release version of R package ExpDE, a standardised modular implementation of Differential Evolution for the experimental investigation of operators, was released today. The package was also submitted to CRAN. This package is the result of work by Prof. Felipe Campelo and his M.Sc. student Moisés Botelho. Some initial results generated with this package were accepted for publication at this year's GECCO conference.


Update (2016-03-26): The package is now also available on CRAN: https://cran.r-project.org/web/packages/ExpDE/.

3 papers accepted for presentation @GECCO'2016

Very good Sunday news: we just got the message that three of our works (out of three submitted - 100% efficiency!!!) were accepted for presentation in the Genetic and Evolutionary Computation Conference (GECCO) 2016, to be held in Denver/CO in the coming July. Considering the high threshold of the GECCO conferences, this high rate of acceptance is quite encouraging!

The accepted manuscripts were:

Congratulations to all students involved in these papers. Keep up the great work!

Read more: 3 papers accepted for presentation @GECCO'2016

Paper Accepted: IET Generation, Transmission and Distribution Journal

We are proud to announce that the manuscript:

Multicriteria Transformer Asset Management with Maintenance and Planning Perspectives

co-written by Felipe Campelo, Lucas Batista, Ricardo Takahashi, Henrique Diniz and Eduardo Carrano has been accepted for publication in the prestigious IET Generation, Transmission and Distribution (IF: 1.353). This paper is the result of a very fruitful R&D cooperation with Brazilian energy juggernaut CEMIG.

Read more: Paper Accepted: IET Generation, Transmission and Distribution Journal

Eric's M.Sc. presentation

Prof. Eduardo Carrano's M.Sc. student Eric Willian will be presenting his M.Sc. work, Otimização da Programação Semafórica em Tempo Real com Base em Modelos Matemáticos on February 26th 2016, starting at 2 pm. The presentation is scheduled to happen in the Seminar Room T005, School of Engineering, UFMG.

Besides Prof. Eduardo Carrano, the evaluation committee is composed by:

  • Prof. Ricardo HC Takahashi (Dept. Mathematics, UFMG)
  • Prof. Paulo Eduardo Maciel de Almeida (Dept. Computing, CEFET-MG)
  • Prof. Elizabeth F. Wanner (Dept. Computing, CEFET-MG)

All ORCS Lab graduate and undergraduate students are invited to the presentation.

George's Qualification Exam

George will be presenting his Ph.D. qualification, titled Formulations And Algorithms For Timetabling on December 16th 2015, starting at 2:30 p.m.. The presentation is scheduled to happen in the Seminar Room T005, School of Engineering, UFMG.

Besides Prof. Eduardo Carrano (George's advisor), the qualification committee is composed by:

  • Prof. Ricardo HC Takahashi (Dept. Mathematics, UFMG)
  • Prof. Martín G Ravetti (Dept. Production Engineering, UFMG)
  • Prof. Haroldo G Santos (Dept. Computer Science, UFOP)
  • Prof. Luciana S Buriol(Institute of Informatics, UFRGS)

All ORCS Lab graduate and undergraduate students are invited to the presentation.

Part of George's work has been recently accepted for publication in the Journal of Scheduling.

DEMO "toolbox" available

Differential Evolution for Multiobjective Optimization

The Octave/Matlab implementation of the Differential Evolution for Multiobjective Optimisation algorithm (with several variants) is now available in our Github repository. These codes were developed by Fillipe Goulart for his M.Sc. dissertation, under the mentoring of Prof. Felipe Campelo. You can find more information after the "Read more", or in our Resources page.

Read more: DEMO "toolbox" available

Paper accepted: Journal of Scheduling

This has definitely been a good semester for the ORCS Lab! We're very happy to announce that the paper:

Late Acceptance Hill-Climbing for High School Timetabling

by George H.C. Fonseca, Haroldo G. Santos and Eduardo G. Carrano has been accepted by Springer's Journal of Scheduling (IF: 1.028), and is currently undergoing final proofreading. This paper is a result of George's Ph.D. work with Prof. Carrano, and the abstract is available below.

Read more: Paper accepted: Journal of Scheduling

Paper accepted: IEEE Trans. Evolutionary Computation

We're very proud to announce that the paper:

Subpermutation Based Evolutionary Multiobjective Algorithm for Load Restoration in Power Distribution Networks

by Eduardo G. Carrano, Gisele P. Silva, Edgard P. Cardoso and Ricardo H.C. Takahashi, has been accepted for publication in the IEEE Transactions on Evolutionary Computation (IF: 3.654). The paper is the main result of Gisele's M.Sc. work, and was developed as part of an R&D project with power utility CEMIG-D. You can read the abstract by clicking the "Read More" button below.

Read more: Paper accepted: IEEE Trans. Evolutionary Computation