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International Conference on Convergence Information Technology

作者： Panida Songram Veera Boonjing Department of Mathematics and Computer Science Faculty of Science King Mongkuts Institute of Technology Ladkrabang Software Systems Engineering Laboratory Bangkok Thailand Department of Computer Science Faculty of Informatics Mahasarakham University Mahasarakham Thailand

In this paper, we propose an efficient algorithm, NCLOSED, for mining the N k-closed itemsets with the highest supports for 1 up to a certain k max value. The algorithm adopts best-first search strategy to generate closed itemsets with highest remaining supports. It does not keep closed itemsets mined in main memory to ensure that they are really closed. This is because this algorithm can directly generate closed itemsets. Moreover, duplicated closed itemsets are detected and discarded from this algorithm.

关键词： Itemsets Data mining Computer science Information technology software systems systems engineering and theory Laboratories Mathematics informatics software algorithms

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Intelligent Hypermedia for the Adaptive Web: Foreword to the SMAP '08 Special Session

Intelligent Hypermedia for the Adaptive Web: Foreword to the...

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International Workshop on Semantic Media Adaptation and Personalization (SMAP)

作者： Ioannis Anagnostopoulos Maria Bielikova Manolis Wallace John W.T. Lee Department of Information Communication Systems Engineering University of Aegean Samos Greece Institute of Informatics and Software Engineering Faculty of Informatics and Information Technologies Slovak University of Technology in Bratislava Ilkovicova Bratislava Slovakia Department of Computer Science and Technology University of Peloponnese Tripoli Greece Department of Computing Hong Kong Polytechnic University Hong Kong China

Researchers need to explore and study the plethora of challenges that emergent intelligent hypermedia technologies bring to the Adaptive Web. This special session aims to increase the awareness of researchers in this area, providing an in-depth investigation on several research and deployment issues, regarding the impact of intelligent methods on this new form of Web. In addition, this special session examines the performance characteristics of various approaches in Web-based systems, while it focuses on the development of intelligent methods among different hypermedia applications.

关键词： Intelligent structures Privacy informatics Protocols System testing Collaboration Service oriented architecture systems engineering and theory software engineering Information technology

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Mining Top-K Closed Itemsets Using Best-First Search

Mining Top-K Closed Itemsets Using Best-First Search

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International Conference on Computer and Information Technology (CIT)

作者： Panida Songram Veera Boonjing Software Systems Engineering Laboratory Department of Mathematics and Computer Science Faculty of Science King Mongkut''s Institute of Technology Ladkrabang Bangkok Thailand Department of Computer Science Faculty of Informatics Mahasarakham University Maha sarakham Thailand

In this paper, we proposed an efficient algorithm, TOPK_CLOSED, for mining top-k closed itemsets. This algorithm mines top-k closed itemsets using best-first search. The closed itemsets with the highest supports are firstly found from this algorithm. Consequently, the method quickly finds top-k closed itemsets, which leads to an efficient pruning unnecessary itemsets and stop mining rapidly. In addition, this algorithm can generate closed itemsets without keeping candidates in main memory.

关键词： Itemsets Generators Data mining Pediatrics Complexity theory Algorithm design and analysis Databases

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Generic service information system architecture — A reference model based approach for evaluating information systems in industrial service

Generic service information system architecture — A referen...

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International Conference on Emerging Technologies and Factory Automation (ETFA)

作者： Michael Amberg Timo Holm Kristian Dencovski Mathias Maurmaier Department of Business Studies Business Informatics 3 Friedrich-Alexander-University of Erlangen-Nuremberg Nuremberg Germany Department of Systems Engineering Corporate Technology Siemens AG Erlangen Germany Institute of Industrial Automation and Software Engineering Universität Stuttgart Stuttgart Germany

The service business for industrial plants poses challenges, which require the use of appropriate service information systems. In order to support the user in an optimal way during service execution the system developer needs to know these challenges to determine and prioritize requirements and thus to plan innovation of the product systematically. This article introduces a generic service information system architecture which allows the mapping of challenges in industrial service business to specific components of industrial service information systems. The evaluation of information systems regarding the support they offer in industrial service business is thereby objectified significantly, which can help system suppliers to identify future requirements and potential for innovation.

关键词： Information systems Business Best practices Industrial plants Object oriented modeling Fault currents Computed tomography

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A Robust Descriptor based on Weber's Law

A Robust Descriptor based on Weber's Law

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26th IEEE Conference on Computer Vision and Pattern Recognition (CVPR 2008), vol.8

作者： Jie Chen Shiguang Shan Guoying Zhao Xilin Chen Wen Gao Matti Pietikainen School of Computer Science and Technology Harbin Institute of Technology Harbin China Machine Vision Group Department of Electrical and Information Engineering University of Oulu Finland Languages Informatics Systems and Software Engineering Department Faculty of Computer Science Chinese Academy and Sciences Beijing China

Inspired by Weber's Law, this paper proposes a simple, yet very powerful and robust local descriptor, Weber Local Descriptor (WLD). It is based on the fact that human perception of a pattern depends on not only the change of a stimulus (such as sound, lighting, et al.) but also the original intensity of the stimulus. Specifically, WLD consists of two components: its differential excitation and orientation. A differential excitation is a function of the ratio between two terms: One is the relative intensity differences of its neighbors against a current pixel;the other is the intensity of the current pixel. An orientation is the gradient orientation of the current pixel. For a given image, we use the differential excitation and the orientation components to construct a concatenated WLD histogram feature. Experimental results on Brodatz textures show that WLD impressively outperforms the other classical descriptors (e.g., Gabor). Especially, experimental results on face detection show a promising performance. Although we train only one classifier based on WLD features, the classifier obtains a comparable performance to state-of-the-art methods on MIT+CMU frontal face test set, AR face dataset and CMU profile test set.

关键词： Robustness Face detection Humans Content addressable storage Testing Psychology Laboratories Machine intelligence Information processing Computers

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Development and control of dolphin-like underwater vehicle

Development and control of dolphin-like underwater vehicle

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American Control Conference (ACC)

作者： Yonghui Hu Long Wang Junzhi Yu Jiyan Huo Yingmin Jia Languages Informatics Systems and Software Engineering Department Faculty of Computer Science Peking University Beijing China Laboratory of Complex Systems and Intelligence Science Institute of Automation Chinese Academy of Sciences Beijing China Seventh Research Division Beihang University Beijing China

This paper is concerned with prototype development and motion control of a dolphin-like underwater robot. The propulsion and maneuvering of the robotic dolphin are realized with the flapping motion of the mechanical flippers and the combined heaving and pitching motions of the fluke. Mechanical design and control of the flipper apparatus and the flexible tail mechanism are presented. Through coordinated control of the propulsors, several swimming movements are designed. Preliminary experimental results verify the effectiveness of the proposed design scheme.

关键词： Underwater vehicles Dolphins Robot kinematics Propulsion Marine animals Motion control Tail Robot sensing systems Control systems Automotive engineering

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Multimodal Interaction - Improving Usability and Efficiency in a Mobile GIS Context

Multimodal Interaction - Improving Usability and Efficiency ...

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International Conference on Advances in Computer-Human Interaction

作者： Julie Doyle Michela Bertolotto David Wilson School of Information Technology and Engineering University of Ottawa ONT Canada School of Computer Science and Informatics University College Dublin Belfield Ireland Department of Software and Information Systems University of North Carolina Charlotte NC USA

The context of mobility raises many issues for GIS applications. Mobile device limitations, including pen input whilst in motion, result in interfaces which are difficult to navigate and interact with. However, comparatively little research has been conducted to address the interface mobility problem for GIS. We are particularly concerned with the limited interaction techniques available to users of mobile GIS which play a primary role in contributing to the complexity of using such an application whilst mobile. Our research focuses on multimodal interfaces as a means to present users with a wider choice of modalities for interacting with GIS applications. The focus of this paper concerns a comprehensive user study which demonstrates the benefits, in terms of usability and efficiency, of a multimodal interface for the CoMPASS mobile GIS which we have developed.

关键词： Usability Geographic Information systems Navigation Information systems Cities and towns Switches Mobile computing Information technology Computer science informatics

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Current Mode Converter for Dielectric Barrier Discharge Lamp

Current Mode Converter for Dielectric Barrier Discharge Lamp

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39th IEEE Power Electronics Specialists Conference (PESC 2008), vol.6

作者： Rafael Diez Hubert Piquet Sounil Bhosle Jean-Marc Blaquiere Languages Informatics Systems and Software Engineering Department Faculty of Computer Science Université de Toulouse Toulouse France

This paper presents a novel concept of supplying a dielectric barrier discharge (DBD) lamp. An electrical model of the lamp is used in a circuit simulator to study the interactions between the converter and the load, which presents a capacitive nature. The current mode supply is chosen instead of the classical voltage mode, in order to respect the causality considerations concerning these interactions. The converter is designed as a unidirectional current source in series with an H-bridge that inverts the current direction in the lamp each half cycle. Two different structures are presented to compose the unidirectional current source: a Boost based converter and a Buck-Boost based converter. Both converters are analyzed using the state plane and implemented, obtaining measurements that comply with the current mode concept. The presented structures allow the control of the current duration and amplitude, thus, the operating point in the discharge. This concept is the basis for the studies of correlation between the gas current and the UV emission.

关键词： Converters Discharges Dielectrics Power supplies Electrodes Integrated circuit modeling Steady-state

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How to Combine Requirements engineering and Interaction Design?

How to Combine Requirements Engineering and Interaction Desi...

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IEEE International Conference on Requirements engineering

作者： Hermann Kaindl Larry Constantine Oscar Pastor Alistair Sutcliffe Didar Zowghi Institute of Computer Technology University of Technology Vienna Vienna Austria Human-Centered Software Engineering Lab University of Madeira Constantine & Lockwood limited USA Department of Informatics Systems and Computation Universitad Politécnica de Valencia Spain Systems Engineering in Manchester Business School University of Manchester Institute of Science and Technology UK Faculty of Information Technology University of Technology (UTS) Australia

In this panel, we propose to figure out how requirements engineering and interaction design can be usefully combined. In particular, some people argue that scenarios/ use cases should be concrete, as in story-telling. Others argue for use of "essential" use cases as a methodological approach to interaction and user-interface design. Somewhat in the middle, it is argued that use cases should help acquiring the requirements in the first place. What should the practitioner believe and, in particular, do, in order to develop useful and usable software and systems? software development and interaction design require different skills and different methods and are typically done by different people. Still, scenario-based design is proposed for several activities relevant for both tasks, such as requirements elicitation, software design, and interaction design. Symbolic modeling in this spirit is actually common to various fields. However, scenario-based approaches vary, especially with regard to their use, e.g., employing abstract use cases or integrating scenarios with functions and goals in a systematic design process. So, the key issue to be raised at the panel is how to combine different approaches, e.g., in scenario-based development, so that the interaction design as well as the development of the user interface and of the software internally result in an overall useful and useable system.

关键词： Design engineering Concrete User interfaces Usability Human computer interaction software systems Programming software design Process design systems engineering and theory

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Using TPN/Designer and UPPAAL for modular modelling and analysis of time-critical systems

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International Journal of Simulation: systems, Science and Technology 2007年第4期8卷 8-20页

作者： Cicirelli, Franco Furfaro, Angelo Nigro, Libero Software Engineering Laboratory Department of Electronics Informatics and Systems Science University of Calabria RendeCS Italy

This paper describes an approach to the analysis of time-critical systems which combines discreteevent simulation and model-checking techniques. The approach rests on Merlin and Farber’s Time Petri Nets (TimePNs) and is supported by a Java toolbox -TPN/DESIGNER- which enables graphical modelling and simulation of modular TimePN models. The toolbox also allows translation of a TimePN model into UPPAAL/Timed Automata for exhaustive state space verification. Usefulness and potential of the proposed approach are demonstrated through its application to a real-time system example. © 2007, UK Simulation Society. All rights reserved.

关键词： Discrete event simulation

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