By Amal Benhamiche, Ridha Mahjoub, Nancy Perrot (auth.), Julia Pahl, Torsten Reiners, Stefan Voß (eds.)
ISBN-10: 3642215262
ISBN-13: 9783642215261
This ebook constitutes the refereed complaints of the fifth overseas convention on community Optimization, INOC 2011, held in Hamburg, Germany, in June 2011. The sixty five revised complete papers awarded have been rigorously reviewed and chosen from various submissions. The papers spotlight contemporary advancements in community optimization and are equipped within the following topical sections: theoretical difficulties, uncertainty, graph conception and community layout; community flows; routing and transportation; and extra optimization difficulties and purposes (energy orientated community layout, telecom purposes, situation, maritime transport, and graph theory).
Read Online or Download Network Optimization: 5th International Conference, INOC 2011, Hamburg, Germany, June 13-16, 2011. Proceedings PDF
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Additional info for Network Optimization: 5th International Conference, INOC 2011, Hamburg, Germany, June 13-16, 2011. Proceedings
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Resilient network design has been widely addressed. In [5] a review on different resilient network design problems is proposed together with path based models: failure scenarios (or states) are taken into account, which, as SRGs, can be used to represent multiple simultaneous failures. The complexity of path-based survivability mechanism is addressed in [6]. Problems arising in the SRG network design context have been considered in several recent works as for example [3] and [4] where some paths and cut problems on colored graphs are analyzed from the computational complexity and approximability point of view.
Due to the diffusion of multilayer networks, protection mechanisms, even in the dedicated case, are required to consider more complex features. The links of the logical layer network correspond to complex objects in lower layers. This means that in case of a failure in the lower layers more than one link is affected in the upper one. This complexity is captured by the so called SRGs. We can define a SRG as the set of links of the logical layer, where the design must be decided, that simultaneously fail in the case of a failure of the lower layer.
The heuristic computational time are reasonable, never rising above 6 minutes. SRG-Disjoint Design with Dedicated and Shared Protection 23 Beside the 10 node instances, we tested the models and the heuristics on 20 node instances. Preliminary results show that the model can solve 3 out of 20 instances for the dedicated protection case in one hour, and the gap is slightly increased with respect to 10 node instances. The heuristic CPU time increases of about three times on average and it rises up to about 15 minutes in the worst case.
Network Optimization: 5th International Conference, INOC 2011, Hamburg, Germany, June 13-16, 2011. Proceedings by Amal Benhamiche, Ridha Mahjoub, Nancy Perrot (auth.), Julia Pahl, Torsten Reiners, Stefan Voß (eds.)
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