Knowledge-Based and Intelligent Information and Engineering by Florin Ionescu, Dragos Arotaritei, Stefan Arghir (auth.),

By Florin Ionescu, Dragos Arotaritei, Stefan Arghir (auth.), Andreas König, Andreas Dengel, Knut Hinkelmann, Koichi Kise, Robert J. Howlett, Lakhmi C. Jain (eds.)

The four-volume set LNAI 6881- LNAI 6884 constitutes the refereed court cases of the fifteenth overseas convention on Knowledge-Based clever info and Engineering platforms, KES 2011, held in Kaiserslautern, Germany, in September 2011.

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Extra resources for Knowledge-Based and Intelligent Information and Engineering Systems: 15th International Conference, KES 2011, Kaiserslautern, Germany, September 12-14, 2011, Proceedings, Part I

Example text

Its aim is to identify the infrastructures required to establish a wireless network. A well-known mono-objective version of the problem has been used. The best-known approach to tackle such a version is a problemdependent strategy. However, other methods which minimise the usage of problem-dependent information have also been defined. Specifically, multiobjectivisation has provided solutions of similar quality than problemdependent strategies. However, it requires a larger amount of time to converge to high-quality solutions.

The app is a very complex problem. In fact, it has been demonstrated to be a NP-complete problem [8]. The app and the afp have been jointly analysed in some cases [1]. In other cases, they have been considered as independent problems [9]. Several formulations of the app have been proposed [11]. Most of them have been monoobjective proposals [9]. In [14], the app was tackled as a mono-objective problem by translating the other considered objectives into restrictions. In [13], several objectives were considered simultaneously and multi-objective strategies were applied.

Section 3 is devoted to describe the applied optimisation scheme. The sequential strategy is detailed in Sect. 1. Specifically, the multiobjectivised methods and genetic operators are described. In Sect. 2 the applied parallel island-based model is depicted. Then, the experimental evaluation is presented in Sect. 4. Finally, the conclusions and some lines of future work are given in Sect. 5. 2 APP: Mathematical Formulation The app is defined as the problem of identifying the infrastructures required to establish a wireless network.

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