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International Conference on Advanced Information Networking and Applications Workshops (AINAW)

作者： Tatsuya Mori Makoto Nakashima Tetsuro Ito Department Computer Science and Intelligent Systems Faculty of Engineering Oita University Oita Japan

ISBN: (纸本)9781467308670

A sophisticated ad hoc cloud computing environment (SpACCE) providing calculation capacity of PCs is proposed to facilitate distributed collaboration. Distributed collaboration is now indispensable in daily work and mainly occurs ad hoc in offices and laboratories. However, computer resources in offices and laboratories are under-utilized, while conventional cloud computing environments composed of dedicated servers are not suited to flexibly deploying applications ad hoc. A SpACCE can be built according to the needs that occur at any given time on a set of personal, i.e., non-dedicated, PCs and dynamically migrate a server for application sharing to another PC. CollaboTray, an application-sharing system, indispensable to share any application without modification, is employed to realize the migration of a server. By migrating a server, the redundant calculation capacity of PCs used for individual work can be utilized to produce a sophisticated ad hoc cloud computing environment, where the response time of the application shared among the users is improved. The level of calculation capacity required to execute the migration of a server and the effectiveness of the migration were clarified by building a SpACCE in a university research room.

关键词： Servers Collaboration Cloud computing Cloning Kernel Computer architecture Buildings

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Dependence Tree Structure Estimation via Copula

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International Journal of Automation and computing 2012年第2期9卷 113-121页

作者： Jian Ma Zeng-Qi Sun Sheng Chen Hong-Hai Liu Department of Computer Science Tsinghua University Beijing 100084 PRC Electronics and Computer Science Faculty of Physical and Applied Sciences University of Southampton Southampton SO17 1B J UK Faculty of Engineering King Abdulaziz University Jeddah 21589 Saudi Arabia Intelligent Systems and Robotics Research Group School of Creative Technologies University of Portsmouth Portsmouth PO1 2D J UK

We propose an approach for dependence tree structure learning via copula. A nonparametric algorithm for copula estimation is presented. Then a Chow-Liu like method based on dependence measure via copula is proposed to estimate maximum spanning bivariate copula associated with bivariate dependence relations. The main advantage of the approach is that learning with empirical copula focuses on dependence relations among random variables, without the need to know the properties of individual variables as well as without the requirement to specify parametric family of entire underlying distribution for individual variables. Experiments on two real-application data sets show the effectiveness of the proposed method.

关键词： Copula empirical copula dependence tree structure learning probability distribution.

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H∞ consensus of nonlinear multi-agent systems based on T-S fuzzy models

H∞ consensus of nonlinear multi-agent systems based on T-S ...

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31st Chinese Control Conference, CCC 2012

作者： Zhao, Yan Reza, Karimi Hamid Li, Bing Huijun, Gao Shenzhen Graduate School Harbin Institute of Technology Shenzhen 518055 China Department of Engineering Faculty of Engineering and Science University of Agder N-4898 Grimstad Norway Institute of Intelligent Control and Systems Harbin Institute of Technology Harbin Heilongjiang Province 150001 China

ISBN: (纸本)9789881563811

In general, due to some limitations of nonlinear control methods, it is difficult to analyze control performance for nonlinear multi-agent network. The T-S fuzzy model-based approach is often introduced to help solve the performance analysis in nonlinear systems, but the problem of nonlinear follower agents approaching a time-varying leader is difficult to be formulated by using the general T-S fuzzy modeling method. In this paper, a novel T-S fuzzy modeling method is proposed, and the error dynamics between the states of agents and the leader signal, evolving according to an isolated unforced nonlinear agent model, is described by a set of T-S fuzzy models. Based on the model, leader-following consensus algorithm is conveniently designed so that under external disturbances, all the follower agents achieve consensus with the leader guaranteeing a prescribed disturbance attenuation level in H∞ sense. Finally, simulations with chaotic dynamic systems and sinusoidal functions are presented, and by applying the obtained results to the initial nonlinear systems, the effectiveness of the obtained results is illustrated. © 2012 Chinese Assoc of Automati.

关键词： Multi agent systems

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Investigation on different learning techniques for weighted kernel regression in solving small sample problem

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ICIC Express Letters 2012年第3期6卷 705-710页

作者： Shapiai, Mohd Ibrahim Ibrahim, Zuwairie Sudin, Shahdan Mohamad, Mohd Saberi Khalid, Marzuki Centre of Artificial Intelligent and Robotics Faculty of Electrical Engineering Malaysia Faculty of Computer Science and Information Systems Universiti Teknologi Malaysia Skudai 81310 Malaysia

Previously, weighted kernel regression (WKR) for solving small sample problems has been reported. The proposed WKR has been successfully employed to solve rational functions with very few samples. The design and development of WKR is important in order to extend the capability of the technique with various learning techniques. Based on WKR, a simple iteration technique is employed to estimate the weight parameters before WKR can be used in predicting the unseen test samples. In this paper, we investigate two learning techniques in estimating the weight parameters. For this purpose, a Ridge Regression (RR) and a guided search based on Particle Swarm Optimization (PSO) are used to investigate the capability of WKR in solving small sample problems. It is found that RR and PSO are better than iteration technique in terms of computational time and exibility of defining the objective function to estimate weight parameters, respectively, without sacrificing the quality of prediction, as supported by the conducted experiments. © 2012 ICIC International.

关键词： Rational functions

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Robust H_∞ Filtering for 2-D FM systems: A Finite Frequency Approach

Robust H_∞ Filtering for 2-D FM Systems: A Finite Frequency...

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IEEE Annual Conference on Decision and Control

作者： Xianwei Li Huijun Gao Hamid Reza Karimi Research Institute of Intelligent Control and Systems Harbin Institute of Technology Faculty of Engineering and Science University of Agder

ISBN: (纸本)9781467320658

This paper investigates the problem of robust H_∞ filtering for uncertain two-dimensional (2-D) discrete systems in the Fornasini-Marchesini local state-space (FM LSS) model with polytopic uncertain parameters. The goal of the paper is to design filters such that the finite frequency (FF) H_∞ norm of the filtering error system has a specified upper bound for all uncertainties. A generalized bounded real lemma (BRL) is first derived for FF H_∞ performance analysis of nominal 2-D FM LSS systems, and then a method, in terms of solving optimization problems with LMI constraints, is presented for robust FF H_∞ filter analysis and design. An illustrative example is given to show the improvements of the proposed filter design methods.

关键词： Robustness Standards Frequency modulation Upper bound Design methodology Uncertainty Noise

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Application of the clickstream-based Web page importance metric in Web site ranking and rank initialization of infant Web pages

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International Journal of Advancements in Computing Technology 2012年第1期4卷 351-358页

作者： Ahmadi-Abkenari, Fatemeh Selamat, Ali Intelligent Software Engineering Laboratory Faculty of Computer Science and Information Systems Universiti Teknologi Malaysia 81310 UTM Skudai Johor Malaysia

One of the main expectations of Web surfers is the inclusion of accurate and fresh result set in search engines' outcomes. Moreover, regarding the limited time and patience of nowadays Web users, they need to be advised on the significance of the Web domain they entered. Due to the exponentially growing and dynamic nature of the World Wide Web, considering these demands for Web crawlers with the existing Web page ranking and importance calculation methods are unachievable, expensive or time-consuming. Therefore, proposing novel heuristics in order to empower the search answer set is the concern of many researchers in this area. In this paper, we employ our previously proposed novel Web page importance metric of LogRank in order to calculate Web site significance value and to include the newly uploaded or infant Web pages into search result set to meet the mentioned expectations of Web surfers. We append our experiment on above matters through analyzing UTM University server log file and over UTM University Web domain.

关键词： Websites

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Logrank: A clickstream-based web page importance metric for web crawlers

International Journal of Digital Content Technology and its ...

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International Journal of Digital Content Technology and its Applications 2012年第1期6卷 200-207页

Information extraction of the Web and more precise ranking methods of Web pages are among the open issues in search engines' research area due to the ever-growing and dynamic nature of the World Wide Web. Therefore, proposing novel approaches or performing any enhancement to the existed algorithms is the concern of many researchers in this field. Since the performance of any Web crawler is highly dependent to the applied Web page importance metric and regarding the obstacles of existed link-dependent or context-based metrics, the innovative heuristics that guarantees the accuracy of search results and better employment of resources is highly on demand. This paper introduces a novel link independent clickstream-based Web page importance metric, illustrates the metric's effectiveness through experimentally testing it over the UTM University Web domain and evaluates the results with information retrieval evaluation measures.

关键词： Search engines

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Exploiting the functional training approach in B-splines

Exploiting the functional training approach in B-splines

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1st IFAC Conference on Embedded systems, Computational Intelligence and Telematics in Control, CESCIT 2012

作者： Ruano, António E Cabrita, Cristiano L. Ferreira, Pedro M. Kóczy, László T. Centre for Intelligent Systems IDMEC IST Portugal University of Algarve 8005-139 Faro Portugal Algarve STP - Algarve Science and Technology Park 8005-139 Portugal Faculty of Engineering Sciences Széchenyi István University Gyor Hungary

ISBN: (纸本)9783902661975

When used for function approximation purposes, neural networks belong to a class of models whose parameters can be separated into linear and nonlinear, according to their influence in the model output. This concept of parameter separability can also be applied when the training problem is formulated as the minimization of the integral of the (functional) squared error, over the input domain. Using this approach, the computation of the gradient involves terms that are dependent only on the model and the input domain, and terms which are the projection of the target function on the basis functions and on their derivatives with respect to the nonlinear parameters, over the input domain. These later terms can be numerically computed with the data. The use of the functional approach is introduced here for B-splines. An example shows that, besides great computational complexity savings, this approach obtains better results than the standard, discrete technique, as the performance surface employed is more similar to the one obtained with the function underlying the data. In some cases, as shown in the example, a complete analytical solution can be found. © 2012 IFAC.

关键词： Backpropagation

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Internet based crossover robot remote control competition among Asian countries - Development of practice based innovative education methodology, Phase V

Internet based crossover robot remote control competition am...

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2012 9th IEEE International Conference on Mechatronics and Automation, ICMA 2012

作者： Xu, C. Ming, A. Kanamori, C. Aoyama, H. Li, H. Xu, L. Li, X. Benjanarasuth, T. Nundrakwang, S. Purahong, B. Wong, C.-C. Department of Mechanical Engineering and Intelligent Systems University of Electro-Communications Chofu Tokyo 182-8585 Japan Institute of Astronautics and Aeronautics University of Electronic Science and Technology of China Chengdu Sichuan China Faculty of Engineering King Mongkut's Institute of Technology Ladkrabang Bangkok Thailand Department of Electrical Engineering Tamkang University Taipei Taiwan

ISBN: (纸本)9781467312776

We introduce 2011's progress and achievements of an internet based crossover robot remote control competition between Japan and China, Thailand, and Taiwan respectively. The competition project has two subjects: the competition itself and the student-student communication and cooperation. The basic competition mode is a remotely controlled robot via the internet cooperates with a locally controlled robot to finish a specified task and, as a unique feature of the project, the studentstudent communication and cooperation is trained through a crossover team organization style that each team is organized by two groups from different universities and the team members required to cooperate with each other via the internet to make robots and deal with competition affairs. Our experience shows the competition benefits not only students' technical skills but also their various no-technical skills and is expected to promote the development of a practice based university education methodology in the future. © 2012 IEEE.

关键词： Remote control

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An audio watermarking method using sampled sound for polyphonic music

An audio watermarking method using sampled sound for polypho...

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International Symposium on Communications and Information Technologies (ISCIT)

作者： Harumi Murata Akio Ogihara Motoi Iwata Michifumi Yoshioka Department of Computer Science and Intelligent Systems Graduate School of Engineering Osaka Prefecture University Sakai Osaka Japan Department of Information and Systems Engineering Faculty of Engineering Kinki University Higashihiroshima Japan

The objective of this work is to devise a new way to embed a watermark into digital audio signal. In conventional methods, it is required that the watermark is embedded without noise perception. However, it is difficult to embed the watermark without noise perception. Hence, we propose an embedding method so as to permit a perception of an embedded watermark signal. For watermarked audio signal, high sound quality is needed even if noises are perceived. Therefore, we estimate notes into music data and decide their timbre by musical instrument identification. Furthermore, for improving the sound quality, we embed one bit of watermark into one tone using the corresponding sampled sound for each tone.

关键词： Watermarking Instruments Harmonic analysis Timbre Time frequency analysis Multiple signal classification

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