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Multi-objective ant colony optimization for the twin-screw configuration problem
Teixeira, Cristina; Covas, J. A.; Stützle, Thomas; Gaspar-Cunha, A.The Twin-Screw Configuration Problem (TSCP) consists in identifying the best location of a set of available screw elements along a screw shaft. Due to its combinatorial nature, it can be seen as a sequencing problem. In addition, different conflicting objectives may have to be considered when defining a screw configuration and, thus, it is usually tackled as a multi-objective optimization problem. In this resea...
A multi-objective ant colony optimization method applied to switch engine sched...
Sabino,Jodelson A.; Leal,José Eugênio; Stützle,Thomas; Birattari,MauroThis paper proposes an ant colony optimization algorithm to assist railroad yard operational planning staff in their daily tasks. The proposed algorithm tries to minimize a multi-objective function that considers both fixed and variable transportation costs involved in moving railroad cars within the railroad yard area. This is accomplished by searching the best switch engine schedule for a given time horizon. ...
Optimization of Co-rotating twin-screw extruders using pareto local search
Teixeira, Cristina; Covas, J. A.; Stützle, Thomas; Gaspar-Cunha, A.A Pareto Local Search (PLS) algorithm was developed and applied to the screw configuration of co-rotating twin-screw extruders. This problem can be seen as a sequencing problem where a set of different screw elements are to be sequentially positioned along the screw in order to maximize the extruder performance. The results obtained were compared with previous results obtained with a Multi-Objective Evolutionar...
Design and analysis of stochastic local search for the multiobjective traveling...
Paquete, Luís; Stützle, Thomashttp://www.sciencedirect.com/science/article/B6VC5-4V3HFGJ-1/2/795d0c7ee7f7129d634d636d8cb78c59
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