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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 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

Fernanda's Qualification Exam

We're happy to invite everyone to Fernanda Takahashi's Ph.D. qualification exam. Her work Sample Size Estimation For Power And Accuracy In The Experimental Comparison of Metaheuristics will be presented on May 31st 2017 2 p.m., at the Seminar Room T005. Besides Fernanda's advisor, ORCS Lab's Prof. Felipe Campelo, the qualification committee will be composed by:

  • Prof. Thiago Noronha, DCC-UFMG
  • Prof. Luiz Duczmal, Dep. Statistics - UFMG
  • Prof. Helio Barbosa, LNCC

Click below for the abstract.

Update: click here for pictures!

Read more: Fernanda's Qualification Exam

April Defense Madness

In the next two weeks we'll be having four (FOUR!) defenses by ORCS Lab's students! All students are invited as usual, and the academic community in general is always very welcome as well!

Check below for details.

Read more: April Defense Madness

MOEADr package 0.2.1 released

The first release version of R package MOEADr, a standardised modular implementation of Multiobjective Evolutionary Algorithms based on Decomposition (MOEA/D), was released today. Version 0.2.1 contains several variants of decomposition strategies, aggregation functions, variation operators, neighborhood assignment rules, update strategies and more. It also integrates seamlessly with package smoof, which provides standard implementations of several benchmark sets for multiobjective optimization.

This package is the result of a joint project between ORCS Lab's Felipe Campelo and Lucas Batista and University of Tsukuba's Claus Aranha, and is part of an upcoming paper on component-wise modeling of MOEA/Ds (stay tuned!).

You can install the package from the R console by typing


Accepted papers - Update

It's been a while since we posted updates here, so today we have a two-hit combo:

  • The PhD work of Alexandre Pimenta has just been accepted for publication at Springer's Computational Economics (IF: 0.691), under the title An Automated Investing Method for Stock Market Based on Multiobjective Genetic Programming. The work is authored by Alexandre Pimenta, Ciniro Nametala, Frederico G. Guimarães, and Eduardo Carrano;

  • George Fonseca is at it again, having just landed a paper in the European Journal of Operational Research (IF: 2.679). His work Integer Programming Techniques for Educational Timetabling was authored by himself, Haroldo Santos, Eduardo Carrano and Thomas Stidsen, and is one of the outcomes of George's time working under Prof. Stidsen at the Technical University of Denmark.

Click below to access both abstracts.

Read more: Accepted papers - Update

Ciniro's M.Sc. Thesis Presentation

We're happy to invite everyone to Ciniro's presentation of his dissertation,

Construção de um Robô Investidor baseado em Redes Neurais Artificiais e Preditores Econométricos.

on February 20th 2017, 9:30a.m., at EEUFMG's Seminar Room III. Besides Ciniro's advisor, ORCS Lab's Prof. Eduardo Carrano, the dissertation committee will be composed by:

    • Prof. Felipe Campelo (ORCS Lab, Dept. Electrical Engineering, UFMG)
    • Prof. Adriano César Machado Pereira (Dept. Computer Science, UFMG)
    • Prof. Rodrigo Tomás Nogueira Cardoso (Dept. Physics and Mathematics, CEFET-MG)

Click below to read the abstract [UPDATE: and for a picture.]

Read more: Ciniro's M.Sc. Thesis Presentation

Papers accepted: two-hit combo!

ORCS Lab's Prof. Eduardo Carrano has received excellent news today, with two of his papers being accepted for publication on the same day!

The first one, accepted for publication in the IET Generation, Transmission & Distribution journal (IF: 1.576) is titled Robust Coordination of Directional Overcurrent Relays Using a Matheuristic Algorithm, by Mateus Costa, Rodney Saldanha, Martín Ravetti and Eduardo Carrano, is a result of Mateus' Ph.D. work (under prof. Carrano) in collaboration with UFMG professors Saldanha (Dept. Electrical Engineering) and Ravetti (Dept. Production Engineering). 

The second, to appear in the Transactions of the Institute of Measurement and Control (IF: 0.820) is the manuscript Fixed Time Traffic Signal Optimization Using a Multiobjective Evolutionary Algorithm and Microsimulation of Urban Networks, by Breno Costa, Samara Leal and Paulo Almeida (all from CEFET-MG) together with Eduardo Carrano.

You can find the abstracts by clicking the "Read More" button below.

Read more: Papers accepted: two-hit combo!

André's Qualification Exam

André Maravilha will be presenting his Ph.D. qualification, titled Heurísticas Baseadas Em Modelos Para Problemas De Otimização Combinatória on September 22th 2016, starting at 9:00 a.m.. Besides Profs. Felipe Campelo and Eduardo Carrano (André's advisors), the qualification committee is composed by:

  • Prof. Geraldo Robson Mateus (Dept. Computer Science, UFMG)
  • Prof. Martín Ravetti (Dept. Production Engineering, UFMG)
  • Prof. Alexandre Delbem (Inst. Mathematical and Computational Sciences, USP)

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

[EDIT: 2016-09-23] - A few pictures can be seen here

Paper accepted - Electric Power Systems Research

We're very proud to inform that the work

Multiobjective Planning of Power Distribution Networks with Facility Location for Distributed Generation

by Cristiane Taroco, Ricardo Takahashi, and Eduardo G. Carrano has been accepted for publication in the Electric Power Systems Research (IF: 1.809). This paper reports some results of Cristiane's Ph.D. work under Prof. Carrano's supervision. You can read the abstract by clicking the "Read More" button below.

Read more: Paper accepted - Electric Power Systems Research

GECCO 2016

ORCS Lab is joining GECCO'2016, one of the top conferences in the evolutionary computation and metaheuristics fields. Prof. Felipe Campelo is presenting two papers:

  • F. Campelo, M. Botelho, Experimental Investigation of Recombination Operators for Differential Evolution. DOI: 10.1145/2908812.2908852
  • M. Teixeira, F. Goulart, F. Campelo, Evolutionary Multiobjective Optimization of Winglets. DOI: 10.1145/2908812.2908848

Prof. Campelo is also presenting an invited talk in the Evolutionary Computation in Practice workshop, titled EAs in Aeronautical Optimization - Some Results and Challenges

The presentation slides can be seen here, here, and here.