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Refactoring is a process of applying behavior-preserving transformations to improve the design, readability, structure, performance, abstraction, and maintainability of existing code. This paper presents an approach to genetic algorithm-driven refactoring for Java programs to automatically judge the qualities of programs based on design patterns. If a program is judged to be bad, refactoring will...
Multi-car elevator (MCE) that has several elevator cars in a single shaft is the novel system and attracts attention for improvement of transportation in high-rise buildings. Design of controller for MCE is very difficult engineering problem, and one of the promising approaches is from-scratch evolutionary optimization of the controller through discrete event simulation of the MCE system. In the present...
We propose a new optimization method, that is found effective for the difficult problem of controlling multi-car elevators (MCE). The important new feature of our method is the introduction of a non-linear policy expression, which is optimized by simulation, using a genetic algorithm. We show that our method outperforms substantially earlier methods that used linear-sum policy expression. We also...
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