Computational Science – ICCS 2008: 8th International by Craig C. Douglas (auth.), Marian Bubak, Geert Dick van

By Craig C. Douglas (auth.), Marian Bubak, Geert Dick van Albada, Jack Dongarra, Peter M. A. Sloot (eds.)

The three-volume set LNCS 5101-5103 constitutes the refereed complaints of the eighth foreign convention on Computational technology, ICCS 2008, held in Krakow, Poland in June 2008.

The 167 revised papers of the most convention music provided including the abstracts of seven keynote talks and the a hundred revised papers from 14 workshops have been conscientiously reviewed and chosen for inclusion within the 3 volumes.

The major convention song used to be divided into nearly 20 parallel classes addressing issues corresponding to e-science purposes and structures, scheduling and cargo balancing, software program companies and instruments, new and its purposes, laptop networks, simulation of advanced platforms, photograph processing and visualization, optimization recommendations, numerical linear algebra, and numerical algorithms. the second one quantity includes workshop papers concerning numerous computational examine parts, e.g.: special effects and geometric modeling, simulation of multiphysics multiscale platforms, computational chemistry and its functions, computational finance and company intelligence, actual, organic and social networks, geocomputation, and instructing computational technology. The 3rd quantity is generally with regards to machine technological know-how themes equivalent to bioinformatics' demanding situations to laptop technology, instruments for software improvement and research in computational technology, software program engineering for large-scale computing, collaborative and cooperative environments, functions of workflows in computational technology, in addition to clever brokers and evolvable systems.

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Additional info for Computational Science – ICCS 2008: 8th International Conference, Kraków, Poland, June 23-25, 2008, Proceedings, Part III

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This work is an essential reference for validation, but many of the techniques are suited to offline validation only, as the interpretation requires human judgement. This section is divided into three subsections related to the provenance of the techniques we intend to evaluate. The first section deals with canonical offline validation techniques from simulation, the second section presents distance measures and the third section presents work that has been done with online simulations. 1 Offline Simulation Validation Balci presents a thorough evaluation of techniques for validation of models in the context of model and simulation development [4].

2 Online Simulations Researchers in the area of discrete event simulations recognize the challenges posed to updating simulations online from streaming data [7]. W. Schoenharl and G. Madey human interpretation is a serious limitation of traditional validation approaches and limits their usefulness in the context of online validation. Simulation researchers have defined a need for online validation but recognize the challenges to the approach. Davis claims that online validation may be unobtainable due to the difficulty in implementing changes to a model in an online scenario.

In this paper we show how the performance of the basic algorithm of the Group Method of Data Handling (GMDH) can be improved using Genetic Algorithms (GA) and Particle Swarm Optimization (PSO). The new improved GMDH is then used to predict currency exchange rates: the US Dollar to the Euros. The performance of the hybrid GMDHs are compared with that of the conventional GMDH. Two performance measures, the root mean squared error and the mean absolute percentage errors show that the hybrid GMDH algorithm gives more accurate predictions than the conventional GMDH algorithm.

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