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International Conference on Integration of Knowledge Intensive Multi-Agent systems (KIMAS)

作者： P.A. Mitkas A.L. Symeonidis I.N. Athanasiadis Intelligent Systems and Software Engineering Laboratory Informatics and Telematics Institute CERTH Thessaloniki Greece Electrical and Computer Engineering Department Aristotle University of Thessaloniki Thessaloniki Greece

Data mining has proven a successful gateway for discovering useful knowledge and for enhancing business intelligence in a range of application fields. Incorporating this knowledge into already deployed applications, though, is highly impractical, since it requires reconfigurable software architectures, as well as human expert consulting. In an attempt to overcome this deficiency, we have developed agent academy, an integrated development framework that supports both design and control of multiagent systems (MAS), as well as agent training. We define agent training as the automated incorporation of logic structures generated through data mining into the agents of the system. The increased flexibility and cooperation primitives of MAS, augmented with the training and retraining capabilities of agent academy, provide a powerful means for the dynamic exploitation of data mining extracted knowledge. In this paper, we present the methodology and tools for agent retraining. Through experimental results with the agent academy platform, we demonstrate how the extracted knowledge can be formulated and how retraining can lead to the improvement - in the long run - of agent intelligence.

关键词： Intelligent agent Delta modulation Data mining Humans Companies Application software software architecture Multiagent systems Reconfigurable logic Collaborative software

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The use of optimal filters to track parameters of performance models

The use of optimal filters to track parameters of performanc...

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International Conference on the Quantitative Evaluation of systems (QEST)

作者： M. Woodside Tao Zheng M. Litoiu Department of Systems and Computer Engineering Carleton University Ottawa Canada Centre for Advanced Studies IBM Toronto Software Laboratory Canada

Autonomic computer systems react to changes in the system, including failures, load changes, and changed user behaviour. Autonomic control may be based on a performance model of the system and the software, which implies that the model should track changes in the system. A substantial theory of optimal tracking filters has a successful history of application to track parameters while integrating data from a variety of sources, an issue which is also relevant in performance modeling. This work applies extended Kalman filtering to track the parameters of a simple queueing network model, in response to a step change in the parameters. The response of the filter is affected by the way performance measurements are taken, and by the observability of the parameters.

关键词： Application software quality of service Predictive models Monitoring systems engineering and theory software performance software systems Kalman filters Filtering Control systems

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Enforcing semantics-aware security in multimedia surveillance

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作者： Kodali, Naren Farkas, Csilla Wijesekera, Duminda Center for Secure Information Systems United States Dept of Info. Systems and Software Eng. George Mason University Fairfax VA 22030-4444 United States Information Security Laboratory United States Dept. of Computer Science and Engineering University of South Carolina Columbia SC 29208 United States

ISBN: (纸本)3540242082

Continuous audio-visual surveillance is utilized to ensure the physical safety of critical infrastructures such as airports, nuclear power plants and national laboratories. In order to do so, traditional surveillance systems place cameras, microphones and other sensory input devices in appropriate locations [Sch99]. These facilities are arranged in a hierarchy of physical zones reflecting the secrecy of the guarded information. Guards in these facilities carry clearances that permit them only in appropriate zones of the hierarchy, and monitor the facilities by using devices such as hand-held displays that send streaming media of the guarded zones possibly with some instructions. The main security constraint applicable to this model is that any guard can see streams emanating from locations with secrecy levels equal to or lower than theirs, but not higher. We show how to model these surveillance requirements using the synchronized multimedia integration language (SMIL) [Aya01] with appropriate security enhancements. Our solution consists of imposing a multi-level security model on SMIL documents to specify surveillance requirements. Our access control model ensures that a multimedia stream can only be displayed on a device if the security clearance of the display device dominates the security clearance of the monitored zone. Additionally, we pre-process a set of cover stories that can be released during emergency situations that allow using the services of guards with lower clearances without disclosing data with higher sensitive levels. For this, we create a view for each level, and show that these views are semantically coherent and comply with specified security polices. © Springer-Verlag Berlin Heidelberg 2004.

关键词： Multimedia services

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Characterization of various etching techniques for gate level failure analysis and substrate decoration for advanced Cu/low k technologies

Characterization of various etching techniques for gate leve...

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International Symposium on Physical & Failure Analysis of Integrated Circuits

作者： Huixian Wu J. Cargo M. White Product Analysis Laboratory Agere Systems Quality Organization Allentown PA USA Department of Electrical & Computer Engineering Lehigh University Bethlehem PA USA

In this paper, VLSI technology scaling trends and challenges will be addressed. Failure analysis (FA) challenges, and failure modes for advanced technologies will also be presented. Both Cu/low k integration and gate dielectric integration issues will be discussed, followed by characterization of various poly-silicon etches used for gate oxide decoration. Finally, several different silicon substrate decoration techniques will be presented.

关键词： Etching Failure analysis Copper Integrated circuit interconnections Dielectric materials Dielectric substrates Silicon Integrated circuit technology Electromigration Delay effects

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Investigating manifold learning algorithms based on magnification factors and principal spread directions

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Jisuanji Xuebao/Chinese Journal of computers 2005年第12期28卷 2000-2009页

作者： He, Li Zhang, Jun-Ping Zhou, Zhi-Hua Shanghai Key Laboratory of Intelligent Information Processing Department of Computer Science and Engineering Fudan University Shanghai 200433 China Key Laboratory of Complex Systems and Intelligence Science Chinese Academy of Sciences Shanghai 200433 China Department of Computer Science and Engineering School of Mathematical Sciences Fudan University Shanghai 200433 China National Laboratory for Novel Software Technology Nanjing University Nanjing 210093 China

As a new unsupervised learning technique, manifold learning has captured the attention of many researchers in the field of machine learning and cognitive sciences. The major algorithms include Isometric mapping (ISOMAP) and Locally Linear Embedding (LLE). The approaches can be used for discovering the intrinsic dimensions of nonlinear high-dimensional data effectively and aim researchers to analyze the data better. How to quantitatively analyze the relationship between the intrinsic dimensions and the observation space, however, has fewer reports. And thus further works in manifold learning may have suffered some difficulties. The paper focuses on two kinds of manifold learning algorithms (ISOMAP, LLE), and discusses magnification factors and principal spread directions from the observation space to the intrinsic low-dimensional space. Also the corresponding algorithm is proposed. Experiments show the effectiveness and advantages of the research.

关键词： Learning algorithms

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Research on the analysis and measurement for testing results of Web applications

Research on the analysis and measurement for testing results...

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International Conference on Cyberworlds

作者： Lei Xu Baowen Xu Yanxiang He Hanwu Chen Qiaoming Zhu Department of Computer Science & Engineering South-East University Nanjing China Jiangsu Institute of Software Quality Nanjing China State Key Laboratory of Software Engineering Wuhan University of China Wuhan China School of Computers National University of Defense Technology Changsha China School of Computer Science & Technology Soochow University Soochow China

Reasonable analysis and corrective measurement for the testing results of Web applications can effectively judge the effect and efficiency of the testing. Therefore, based on the previous work, we propose a new method for testing results analysis and comparison, which uses the semantic label and XML description technique to realize the information separation between data and display in the Web pages, so as to directly compare the testing results and the expected results. Furthermore, combined with the realities, we determine the metric indexes of Web application testing, so as to provide the criterions and guidelines for the evaluations of the Web applications and their testing processes. And we introduce the feedback control mechanism into the development and evolvement of Web applications, so as to further improve the system quality

关键词： Application software computer science Laboratories software engineering software testing Information analysis XML Web pages Helium software quality

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Approximate information retrieval for heterogeneity ontologies

Approximate information retrieval for heterogeneity ontologi...

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International Conference on Cyberworlds

作者： Dazhou Kang Baowen Xu Jianjiang Lu Keyue Li W.C. Chu Hanwu Chen Department of Computer Science and Engineering South-East University Nanjing China Jiangsu Institute of Software Quality Nanjing China State Key Laboratory of Software Wuhan University of China Wuhan China People''s Liberation Army University of Science and Technology Nanjing China Department of Computer Science and Information Engineering TungHai University Taiwan

Ontology-based information retrieval is precise and effective but suffers from the problem of ontology heterogeneity. This paper focuses on the approximate information retrieval approach to solve the heterogeneity problem of both common ontologies as well as fuzzy ontologies on the semantic Web. Approximate information retrieval needs to find approximations of concepts. However, current methods cannot find the best approximations of concepts for common ontologies, and there is still no published work for fuzzy ontologies. This paper firstly proposes a method of approximate information retrieval between common ontologies. It defines multielement least upper bounds and multielement greatest lower bounds, and then simplifies the multielement bounds to remove redundancy. It provides effective algorithms to find the simplified multielement bounds, and get the best approximations of concepts from the bounds. Then for the fuzzy ontologies, the paper defines cut concepts to transform fuzzy concepts into common concepts, and then applies the proposed method for approximate information retrieval between fuzzy ontologies. The improved algorithms for fuzzy ontologies are given to make the method more feasible and effective

关键词： Information retrieval Ontologies computer science Upper bound Information systems software quality Laboratories Educational technology Electronic mail computer science education

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Cost-benefit trade-off analysis using BBN for aspect-oriented risk-driven development

Cost-benefit trade-off analysis using BBN for aspect-oriente...

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10th IEEE International Conference on engineering of Complex computer systems, ICECCS 2005

作者： Houmb, Siv Hilde Georg, Geri France, Robert Bieman, James Jürjens, Jan Department of Computer Science Norwegian University of Science and Technology Sem Sælands Vei 7-9 NO-7491 Trondheim Norway Software Assurance Laboratory Department of Computer Science Colorado State University 601 S. Howes St. Fort Collins CO 80523-1873 United States Systems Engineering TU Munich Boltzmannstr. 3 85748 München/Garching Germany

Security critical systems must perform at the required security level, make effective use of available resources, and meet end-users expectations. Balancing these needs, and at the same time fulfilling budget and time-to-market constraints, requires developers to design and evaluate alternative security treatment strategies. In this paper, we present a development framework that utilizes Bayesian Belief Networks (BBN) and Aspect-Oriented Modeling (AOM)for a cost-benefit trade-off analysis of treatment strategies. AOM allows developers to model pervasive security treatments separately from other system functionality. This ease the trade-off by making it possible to swap treatment strategies in and out when computing Return on Security Investments (RoSI). The trade-off analysis is implemented using BBN, and RoSI is computed by estimating a set of variables describing properties of a treatment strategy. RoSI for each treatment strategy is then used as input to choice of design. © 2005 IEEE.

关键词： computer networks

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Reasoning technique for extended fuzzy description logics

Reasoning technique for extended fuzzy description logics

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International Conference on Tools for Artificial Intelligence (ICTAI)

作者： Yanhui Li Baowen Xu Jianjiang Lu Dazhou Kang Jie Xu Department of Computer Science and Engineering South-East University Nanjing China State Key Laboratory of Software Wuhan University of China Wuhan China Jiangsu Institute of Software Quality Nanjing China People''s Liberation Army University of Science and Technology Nanjing China

A family of extended fuzzy description logics, which includes a framework of syntax, semantics, knowledge base form and reasoning tasks, is proposed to enable representation and reasoning for complex fuzzy information. This paper discusses the reasoning technique for reasoning tasks of extended fuzzy description logics, which adopts classical description logics to discretely simulate extended fuzzy description logic in polynomial time and reuses the existing reasoning result to prove the complexity of reasoning tasks of extended fuzzy description logics

关键词： Fuzzy logic Fuzzy reasoning software quality computer science Laboratories Programmable logic arrays Electronic mail Polynomials Knowledge representation Fuzzy sets

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Modelling code mobility and migration: An OPM/Web approach

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International Journal of Web engineering and Technology 2005年第1期2卷 6-28页

作者： Reinhartz-Berger, Iris Dori, Dov Katz, Shmuel Technion Israel Institute of Technology Technion City Haifa 32000 Israel Department of Management Information Systems University of Haifa Israel Information Systems Engineering Area Faculty of Industrial Engineering and Management Technion Israel Institute of Technology Israel MIT Cambridge United States Computer Science Department Technion Israel Institute of Technology Israel Systems and Software Development Laboratory Israel

Web applications exhibit dynamic behaviour through such features as animation, rapidly changing presentations, and interactive forms. The growing complexity of web applications requires a rigorous modelling approach capable of clearly and explicitly addressing code mobility issues. While mobile agent systems and programming languages support the implementation of code mobility with features such as applets or mobile agents, existing system analysis and design methods lack the facilities to model code mobility satisfactorily. OPM/Web is an extension of object-process methodology (OPM) for modelling distributed systems and web applications that enables intuitive modelling of code mobility concepts in a single framework. We propose generic OPM/Web models for common code mobility design paradigms, including Remote Evaluation, Code-on-Demand, PUSH and Mobile Agents. An OPM/Web model of a mobile application that handles requests for quality of Service over the internet exemplifies the use and advantages of modelling such systems in OPM/Web. Copyright © 2005 Inderscience Enterprises Ltd.

关键词： World Wide Web

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