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2010 International Conference on Applied Mechanics and Mechanical engineering, ICAMME 2010

作者： Jing, Lu Shihong, Wu Yuda, Shi College of Optoelectronic Science and Engineering Huazhong Univ. of Science and Technology 430074 Wuhan China Dept. of Computer Science and Technology Hubei Univ. of Education 430205 Wuhan China Inst. of Pattern Recognition and Artificial Intelligence Huazhong Uni. of Science and Technology 430074 Wuhan China

ISBN: (纸本)9780878492459

Bullet identification is a complicated work which demands high accuracy rate. In this paper, we try to find a reliable and fast automatic bullet identification algorithm using image processing technology. The key and most difficult step is to find an image feature which can describe the unique striation pattern on the bullet. When we do bullet identification by human-eye, we try to best match the striations of the bullets. It's mainly according to the order of the striations and the distance between them. Based on this principle, a new algorithm for automatic bullet identification is proposed. Using the bullet's visual graphic set which is offered by the Three-Dimensional Laser Color Scanner (3DLCS), we firstly do pre-processing to the bullet unwrapped image, such as image enhancement, edge detecting, binarization, thinning and denoising, to obtain an image with clear striations and low noises. Then we find an effective image feature based on the principle of human vision: the bullet feature vectors (BFVs). According to actual needs, we give a reasonable definition for vector distance (VD) between vectors of different dimensions, and take VD of BFVs as a measurement for bullet similarity. Experimental results prove that our algorithm can correctly find the bullets with high trace similarity and do bullet identification successfully. © (2010) Trans Tech Publications, Switzerland.

关键词： Feature extraction

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Performance evaluation of various storage formats for clinical data repositories

Performance evaluation of various storage formats for clinic...

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2010 IEEE International Workshop on Medical Measurements and Applications, MeMeA 2010

作者： Gilchrist, Jeff Frize, Monique Ennett, Colleen M. Bariciak, Erika Dept. Systems and Computer Engineering Carleton University Ottawa ON Canada School of Information Technology and Engineering University of Ottawa Ottawa ON Canada Dept. Biomedical Informatics Philips Research North America Briarcliff Manor NY United States Faculty of Medicine University of Ottawa Children's Hospital of Eastern Ontario Ottawa ON Canada

ISBN: (纸本)9781424462896

The performance of three different Entity-Attribute-Value (EAV) storage formats for Clinical Data Repositories (CDRs) is compared with regards to querying millions of data points from clinical sources to assess the amount of storage space the data use, the speed with which the data can be obtained, and the complexity of the queries required to retrieve the data. Performance results are presented that show that the hybrid EAV approach provides a nice balance of the simple and multi-data type formats. ©2010 IEEE.

关键词： Decision support systems

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Convex hull manipulation based control performance optimisation

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WSEAS Transactions on Systems and Control 2010年第8期5卷 691-700页

作者： Gróf, Patrícia Baranyi, Péter Korondi, Péter Computer and Automation Research Institute Cognitive Informatics Research Budapest Hungary Budapest University of Technology and Economics Dept. of Telecommunications and Media Informatics Budapest Hungary Budapest University of Technology and Economics Dept. of Mechatronics Optics and Engineering Informatics Budapest Hungary

This paper deals with the topic of qLPV state-space model based control design in which LMIs are used to optimize the multi-objective control performance. In this paper we investigate how the manipulation convex hull of the polytopic model influences the control performance which is derived by LMIs. We examine these influences through the control design of the two dimensional aeroelastic system's example. First we define various TP type polytopic model representations of a wing section whose vertices define different convex hulls. In the second step we investigate how these models lead to different control performances.

关键词： State space methods

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A triple-random ensemble classification method for mining multi-label data

A triple-random ensemble classification method for mining mu...

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10th IEEE International Conference on Data Mining Workshops, ICDMW 2010

作者： Nasierding, Gulisong Kouzani, Abbas Z. Tsoumakas, Grigorios Dept. of Computer Science and Technology Xinjiang Normal University 102 Xin Yi Rd. Urumqi China School of Engineering Deakin University Geelong VIC 3217 Australia Department of Informatics Aristotle University of Thessaloniki Thessaloniki 54124 Greece

ISBN: (纸本)9780769542577

This paper presents a triple-random ensemble learning method for handling multi-label classification problems. The proposed method integrates and develops the concepts of random subspace, bagging and random k-labelsets ensemble learning methods to form an approach to classify multi-label data. It applies the random subspace method to feature space, label space as well as inst.nce space. The devised subsets selection procedure is executed iteratively. Each multi-label classifier is trained using the randomly selected subsets. At the end of the iteration, optimal parameters are selected and the ensemble MLC classifiers are constructed. The proposed method is implemented and its performance compared against.that of popular multi-label classification methods. The experimental results reveal that the proposed method outperforms the examined counterparts in most occasions when tested on six small to larger multi-label datasets from different domains. This demonstrates that the developed method possesses general applicability for various multi-label classification problems. © 2010 IEEE.

关键词： Learning systems

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Determination of the Stability Parameter Space of a Two Dimensional Aeroelastic System, a TP Model-based Approach

Determination of the Stability Parameter Space of a Two Dime...

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International Conference on Intelligence engineering Systems

作者： Patricia Grof Peter Baranyi Peter Korondi "Computer and Automation Research Institute/Cognitive Informatics Research Group Budapest University of Technology and Economics/Dept. of Telecommunications and Media Informatics Budapest University of Technology and Economics/Dept. of Mechatronics Optics and Engineering Informatics

ISBN: (纸本)9781424476527

This paper falls in the topic of qLPV state-space model based control design in which LMIs are used to optimize the multi-objective control performance. In this paper we investigate how the convex hull of the polytopic model influences the feasibility of the LMI based control design and the resulting control performances. We examine these influences through the control design of the two dimensional aeroelastic system's example. First we define various TP type polytopic model representations of a wing section whose vertices define different convex hulls. In the second step we investigate how these models lead to different control performances.

关键词： Stability Control systems Nonlinear control systems Delay effects Space technology Control design Feedback control Displacement control Force control Velocity control

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Tensor Product Model Transformation Based Friction Compensation of a Mechatronic System

Tensor Product Model Transformation Based Friction Compensat...

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International Conference on Intelligence engineering Systems

作者： Bela Takarics Peter Korondi Peter Baranyi Dept. of Mechatronics Optics and Engineering Informatics Budapest University of Technology and Economics Cognitive Informatics Research Group Computer and Automation Research Institute

ISBN: (纸本)9781424476527

The Tensor Product (TP) model transformation is a recently proposed technique for transforming given Linear Parameter-Varying (LPV) state-space models into polytopic model form, namely, to parameter-varying convex combination of Linear Time Invariant (LTI) systems. The main advantage of the TP model transformation is that it is executable in a straightforward way and the Linear Matrix Inequality (LMI) based control design frameworks can immediately be applied to the resulting polytopic models to yield controllers with tractable and guaranteed performance. The main contribution of this paper is that it represents the friction of a DC servo drive in TP model form, automatically designs LMI based controller for friction compensation. The reference signal compensation is also based on the TP model transformation. The results were simulated for speed control of the DC servo drive and were compared to other control techniques.

关键词： Non-linear system control Friction compensation DC servo drive Simulation

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KADRE: Domain-specific architectural recovery for scientific software systems

KADRE: Domain-specific architectural recovery for scientific...

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25th IEEE/ACM International Conference on Automated Software engineering, ASE'10

作者： Woollard, David Mattmann, Chris A. Popescu, Daniel Medvidovic, Nenad Jet Propulsion Laboratory California Inst. of Technology 4800 Oak Grove Drive Pasadena CA 91109 United States Computer Science Dept. Univ. of Southern California Los Angeles CA 90089 United States

ISBN: (纸本)9781450301169

Scientists today conduct new research via software-based experimentation and validation in a host of disciplines. Scientific software represents a significant investment due to its complexity and longevity yet there is little reuse of scientific software beyond small libraries which increases development and maintenance costs. To alleviate this disconnect, we have developed KADRE, a domain-specific architecture recovery approach and toolset to aid automatic and accurate identification of workflow components in existing scientific software. KADRE improves upon state of the art general cluster techniques, helping to promote component-based reuse within the domain. © 2010 ACM.

关键词： computer software reusability

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Heuristic search for identical payoff Bayesian games

Heuristic search for identical payoff Bayesian games

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9th International Joint Conference on Autonomous Agents and Multiagent Systems 2010, AAMAS 2010

作者： Oliehoek, Frans A. Spaan, Matthijs T.J. Dibangoye, Jilles S. Amato, Christopher Informatics Institute University of Amsterdam Amsterdam Netherlands Inst. for Systems Robotics Instituto Superior Técnico Lisbon Portugal Laval University Canada University of Caen Basse-Normandie France Dept. of Computer Science University of Massachusetts Amherst MA 01003 United States

ISBN: (纸本)9781617387715

Bayesian games can be used to model single-shot decision problems in which agents only possess incomplete information about other agents, and hence are important for multiagent coordination under uncertainty. Moreover they can be used to represent different stages of sequential multiagent decision problems, such as POSGs and DEC-POMDPs, and appear as an operation in many methods for multiagent planning under uncertainty. In this paper we are interested in coordinating teams of cooperative agents. While many such problems can be formulated as Bayesian games with identical payoffs, little work has been done to improve solution methods. To help address this situation, we provide a branch and bound algorithm that optimally solves identical payoff Bayesian games. Our results show a marked improvement over previous methods, obtaining speedups of up to 3 orders of magnitude for synthetic random games, and reaching 10 orders of magnitude speedups for games in a DEC-POMDP context. This not only allows Bayesian games to be solved more efficiently, but can also improve multiagent planning techniques such as top-down and bottom-up algorithms for decentralized POMDPs. Copyright © 2010, International Foundation for Autonomous Agents and Multiagent Systems (***). All rights reserved.

关键词： Game theory

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Discrete-time modeling tools for DC-DC converters

Discrete-time modeling tools for DC-DC converters

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2010 International Power Electronics Conference - ECCE Asia -, IPEC 2010

作者： Hamar, J. Nagy, I. Funato, H. Nishida, Y. Ohsaki, H. Masada, E. Department of Automation and Applied Informatics Budapest University of Technology and Economics Goldmann Gyorgy Ter 3 1111 Budapest Hungary MFKK Invention and Research Center Services Co. Ltd. Budapest Hungary Computer and Automation Research Institute Hungarian Academy of Science Budapest Hungary Dept. of Electrical and Electronic Engineering Utsunomiya University Utsunomiya Japan Dept. of Electric Electronics and Computer Engineering Chiba Institute of Technology Japan University of Tokyo Tokyo Japan Railway Technology Research Institute Tokyo Japan

ISBN: (纸本)9781424453955

The objective of the discrete-time modeling tools is twofold. First, they give an insight into the basic ideas of discrete-time modeling of dc-dc converters for university students and interested power electronics specialists. Second, as it is being presented below, the interactive calculation tools facilitate the fast and simple model-development in WEB browser after entering the basic circuit and load parameters. This feature can especially be useful for the practicing design engineers, since without long calculations with matrix functions the linearized discrete-time system model is immediately and automatically developed in both mathematical form (state-space equations and transfer functions in the Z domain) and also in graphical form (pole-zero map and bode plot). © 2010 IEEE.

关键词： DC-DC converters

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Hardware implementation of fuzzy flip-flops based on lukasiewicz norms

Hardware implementation of fuzzy flip-flops based on lukasie...

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作者： Lovassy, Rita Zavala, Antonio Hernández Gál, László Nieto, Oscar Camacho Kóczy, László T. Batyrshin, Ildar Inst. of Informatics Electrical and Mechanical Engineering Faculty of Engineering Sciences Széchenyi István University Gyor Hungary Inst. of Microelectronics and Technology Kandó Kálmán Faculty of Electrical Engineering Óbuda University Budapest Hungary Dept. of Electronics Unidad Profesional Interdisciplinaria en Ingeniería y Tecnologías Avanzadas Instituto Politécnico Nacional Mexico Dept. of Technology Informatics and Economy University of West Hungary Hungary Dept. of Microelectronics and Embedded Systems Centro de Investigación en Computación Instituto Politécnico Nacional Mexico Dept. of Telecommunication and Media Informatics Budapest University of Technology and Economics Hungary Instituto Mexicano del Petroleo Mexico

ISBN: (纸本)9789604741731

The digital hardware implementation of various fuzzy operations furthermore of fuzzy flip-flops has been the subject of intense study and application. The fuzzy D flip-flop derived from fuzzy J-K one is a single input - single output unit with sigmoid transfer characteristics in some particular cases, proper to use as neuron in a Fuzzy Neural Networks (FNN). In this paper we propose the hardware realization of fuzzy D flip-flops based on Lukasiewicz norms.

关键词： Fuzzy neural networks

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