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

作者： Jin-Cherng Lin Chun-Lun Chou Cheng-Hsiung Liu Department of Computer Science and Engineering Tatung University Taipei Taiwan Department of Management Information System Ta-Hwa Institute of Technology Hsinchu Taiwan

In the last years, demand for high-speed Internet access and multimedia service has increased greatly. The IEEE 802.16 Working Group on broadband wireless access is developing the IEEE 802.16 standards for wireless metropolitan area networks. IEEE 802.16 aims at providing broadband wireless last-mile access in a Metropolitan Area Network, easy deployment, high speed data rate and large spanning area. WiMAX also support quality of service architecture include priority scheduling and queuing for bandwidth allocation to support our system more efficient. Therefore, we have an idea to implement some scheduling schemes on WiMAX system in NS2 to analysis in uplink and downlink direction to get better performance. By simulation results, it can show the performance of different scheduling schemes clearly, and which one suit for different specific environment. Finally, we can support an efficient Queuing scheduling theory on dynamic bandwidth allocation to get better performance for the IEEE 802.16 system.

关键词： Scheduling algorithm WiMAX Metropolitan area networks Channel allocation Web and internet services Standards development Wireless LAN Quality of service Performance analysis Downlink

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The Imbalanced Problem in Mass-spectrometry Data Analysis

The Imbalanced Problem in Mass-spectrometry Data Analysis

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第二届最优化与系统生物学国际研讨会

作者： Hao-Hua Meng Guo-Zheng Li Rui-Sheng Wang Xing-Ming Zhao Luonan Chen School of Computer Engineering and Science Shanghai University Department of Control Science and Engineering Tongji University School of Information Renmin University of China Institute of System Biology Shanghai University

In many cases, protein mass-spectrometry data are imbalanced, i.e. the number of positive examples is much less than that of negative ones, which generally degrade the performance of classifiers used for protein recognition. Despite its importance, few works have been conducted to handle this problem. In this paper, we present a new method that utilizes the EasyEnsemble algorithm to cope with the imbalance problem in mass-spectrometry data. Furthermore, two feature selection algorithms, namely PREE (Prediction Risk based feature selection for EasyEnsemble) and PRIEE (Prediction Risk based feature selection for Individuals of EasyEnsemble), are proposed to select informative features and improve the performance of the EasyEnsemble classifier. Experimental results on three mass spectra data sets demonstrate that the proposed methods outperform two existing filter feature selection methods, which prove the effectiveness of the proposed methods.

关键词： Mass-spectrometry, Feature selection, Ensemble

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A Fair-Use DRM system Based on Web Service

A Fair-Use DRM System Based on Web Service

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International Conference on Intelligent systems Design and Applications (ISDA)

作者： Yu-Yi Chen Yao-Jen Wang Cheng-Jie Chen Department of Management Information System National Chung Hsing University Taiwan Department of Computer Science and Engineering National Chung Hsing University Taiwan

The National Institute of Standards and Technology give the following definition: "Digital rights management is a system of information technology components and services along with corresponding law, policies and business models which strives to distribute and control intellectual property and its right." However, most existing DRM systems are designed for powerful protection. The portability of rights is restricted by close confinement of the DRM protection mechanism. The user's fair use rights are being violated. In this paper we propose a protocol to achieve the fair use by using virtual software token.

关键词： Web services Power system protection NIST Technology management Power system management Information technology Business communication Power system modeling Intellectual property Protocols

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Distributed processing of event data and multi-faceted knowledge in a collaboration federation

Distributed processing of event data and multi-faceted knowl...

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IEEE International Conference on Intelligence and Security Informatics, ISI

作者： Stanley Y.W. Su Howard Beck Seema Degwekar Jeff DePree Xuelian Xiao Chen Zhou Minsoo Lee Database System Research & Development Center Department of Computer Information Science and Engineering University of Florida Gainesville FL USA Department of Agricultural and Biological Engineering University of Florida Gainesville FL USA Department of Computer Science and Engineering Ewha Womans University Seoul South Korea

This paper presents the goal, accomplishments and research issues of an NSF project. The project aims to develop a distributed event-triggered knowledge sharing network (ETKnet) for government organizations to share, not only data and application operations, but also knowledge embedded in organizational and inter-organizational policies, regulations, data and security constraints as well as collaborative processes and operating procedures. A unified knowledge and process specification language has been developed to formally specify multi-faceted human and organizational knowledge in terms of three types of knowledge rules and rule structures. A user-friendly interface is provided for collaborating organizations to define events of interest as well as application operations, knowledge rules, rule structures and triggers. Events are published in a global registry for browsing, querying, event subscription and notification. Rules and rule structures are automatically translated into Web services for distributed processing in ETKnet. Event data are dots that can be connected dynamically across organizational boundaries through the interoperation of knowledge rules, processes and application operations.

关键词： Distributed processing Collaboration Partial response channels Internet Information analysis Humans Social network services Specification languages Uniform resource locators Problem-solving

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Low noise distributed amplifiers using a novel composite-channel GaN HEMTs

Pan Tao Ti Hsueh Pao/Chinese Journal of Semiconductors

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Pan Tao Ti Hsueh Pao/Chinese Journal of Semiconductors 2008年第12期29卷 2297-2300页

作者： Cheng, Zhiqun Zhou, Xiaopeng Chen, J Kevin Key Laboratory of RF Circuit and System of the Ministry of Education Hangzhou Dianzi University Hangzhou 310018 China Department of Electronic and Computer Engineering Hong Kong University of Science and Technology Hong Kong

Low noise distributed amplifiers (DAs) using the novel low noise composite-channel Al0.3Ga0.7N/ Al0.05Ga0.95N/GaN HEMTs (CC-HEMTs) with 1m-gate-length are designed and fabricated. Simulated and measured results of the DAs are characterized. The measured results show that the low noise DAs have input and output VSWR (voltage standing wave ratio) of less than 2.0, associated gain of more than 7.0 dB and gain ripple of less than ldB in the frequency range from 2 to 10GHz. Noise figure of the DAs is less than 5dB in the frequency range from 2 to 6GHz, and less than 6.5dB in the frequency range from 2 to 10GHz. The measured results agree well with the simulated ones. ©2008 Chinese Institute of Electronics.

关键词： Noise figure

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Mobility models towards the performance of geographical-based route maintenance strategy in DSR

Mobility models towards the performance of geographical-base...

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International Symposium on Information Technology, ITSim

作者： Muhammad Farhan Sjaugi Mohamed Othman Mohd. Fadlee A. Rasid Department of Communication System and Network Faculty of Computer Science and Information Technology Universiti Putra Malaysia Serdang Selangor Darul Ehsan Malaysia Department of Computer and Communication System Engineering Faculty of Engineering Malaysia Universiti Putra Malaysia Serdang Selangor Darul Ehsan Malaysia

In the future, Mobile Ad hoc Networks (MANET)s are expected to be deployed in myriads of scenarios having complex node mobility and connectivity dynamics. Unfortunately, these complex movement scenarios give a tough challenge to the MANET routing protocol. We reviewed some mobility models that have different mobility characteristic, and also studied the effect of these mobility models towards the performance of geographical-based route maintenance strategy in the Dynamic Source Routing (DSR) protocol.

关键词： Routing protocols Distance measurement Mobile communication Traffic control Mobile ad hoc networks Maintenance engineering Protocols

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Analyzing Distribution and Evolution of Research Interests by Term Extraction and Ontology Learning

Analyzing Distribution and Evolution of Research Interests b...

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International Conference on Web-Age Information Management Workshops (WAIM)

作者： Zhiqiang Gao Wanying Zhu Yuzhong Qu Zhisheng Huang School of Computer Science and Engineering South-East University Nanjing China Jiang Su LSYW System Integration Company Limited China Department of Computer Science Vrije Universiteit Amsterdam Netherlands

ISBN: (纸本)9781424432004;9780769531854

This paper introduces dynamic view, a novel semantic Web application, for users to query, browse and visualize distribution and evolution of research interests in temporal, spatial and ontological dimensions. We present motivation and requirements for a system like dynamic view, and discuss its architecture. We outline main algorithms for term extraction from Web pages of researchers and ontology learning from digital libraries, and sketch visualizations we used in the interface.

关键词： Ontologies Web pages Data mining Artificial intelligence Evolution (biology) Libraries USA Councils

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FIR filter design on Flexible Engine/Generic ALU array and its dedicated synthesis algorithm

FIR filter design on Flexible Engine/Generic ALU array and i...

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IEEE Asia-Pacific Conference on Circuits and systems

作者： Ryo Tamura Masayuki Honma Nozomu Togawa Masao Yanagisawa Tatsuo Ohtsuki Makoto Satoh Department of Computer Science and Engineering Waseda University Shinjuku Tokyo Japan System Development Laboratory Hitachi and Limited Kawasaki Kanagawa Japan

Reconfigurable processors are those whose contexts are dynamically reconfigured while they are working. We focus on a reconfigurable processor called FE-GA (Flexible Engine/Generic ALU array) for digital media processing. Currently, FE-GA does not have its dedicated behavior synthesis tool. In this paper, we design FIR filters and propose an algorithm to map them onto it automatically. For given an order and coefficients of an FIR filter, the algorithm generates a dedicated assembly code which represents a given FIR filter for FE-GA. Then an editor called FEEditor reads the generated assembly code and implements its corresponding FIR filter on FE-GA. The proposed algorithm achieves automatic mapping of FIR filters of all orders within the range of the specification of FE-GA architecture. Furthermore, it is proved that a minimum cycle is achieved to execute FIR filtering if there is no thread switching.

关键词： Finite impulse response filter Algorithm design and analysis Assembly Search engines Field programmable gate arrays Circuit synthesis Filtering Yarn Network synthesis Logic arrays

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Multi-robot cooperative pursuit based on combinatorial auction mechanism under dynamic environment

Multi-robot cooperative pursuit based on combinatorial aucti...

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2008 2nd International Symposium on systems and Control in Aerospace and Astronautics, ISSCAA 2008

作者： Su, Cai Ze Ning, Sun Li Bo, Gao Hai Cheng, Zhou Pu State Key Laboratory of Advanced Robot and System Harbin Institute of Technology Harbin 150001 Heilongjiang China School of Computer Science and Technology Harbin Institute of Technology Harbin 150001 Heilongjiang China Department of Information Engineering Artillery Academy of PLA Hefei 230031 AnHui Province China

This paper mainly discusses the pursuit-evasion games, in which a team of autonomous mobile robots act as pursuers to pursue multiple moving targets cooperatively. In order to reduce the communication load during the task negotiation process, the auction mechanism in Economics was introduced,and an improved task negotiation process based on Multi-Unit Combinatorial Auction was proposed. It allocated task dynamically through capability classification and independent competition. A kind of multi-robot cooperative pursuit algorithm that allows dynamic alliance is proposed. Simulation results show the feasibility and validity ofthe given algorithm.

关键词： Multipurpose robots

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Using a genetic algorithm to obtain a neural network-based model of a real autonomous vehicle

Using a genetic algorithm to obtain a neural network-based m...

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IEEE International Symposium on Industrial Electronics (ISIE)

作者： Nieves Pavon Pulido Joaquin Ferruz Melero A. E. Ruano Department of Computer Science University of Huelva Spain Department of System Engineering and Automation University of Seville Spain Centre of Intelligent Systems University of Algarve Portugal

In this paper, a set of radial basis function (RBF) neural networks, capable to learn the kinematic and dynamic behavior of the Romeo 4R autonomous vehicle, is presented. In order to obtain a set of good RBF nets in terms of the number of neurons and the number of lagged inputs, a multi-objective genetic algorithm (MOGA) has been used. The kinematic and dynamic systems of the mobile robot have been split into three subsystems: the steering module, the drive module and the heading module. Each subsystem is modeled with a neural network that learns its behaviour using, among others, a set of lagged outputs as inputs. The outputs from the steering and drive modules are also used as inputs in the heading module. Neural networks - based models are compared to classical approaches.

关键词： Genetic algorithms Neural networks Remotely operated vehicles Mobile robots Kinematics Vehicle dynamics Fuzzy systems Intelligent systems Neurons Navigation

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