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2007 International Conference on Machine Learning and Cybernetics(IEEE第六届机器学习与控制论国际会议)

作者： CHENG DENG XIN-BO GAO DA-CHENG TAO XUE-LONG LI Lab of Video & Image Processing System School of Electronic Engineering Xidian University Xi'an 7 Lab of Video & Image Processing System School of Electronic Engineering Xidian University Xi'an 7 Department of computing The Hong Kong Polytechnic University Hung Horn Kowloon Hong Kong School of Computer Science and Information Systems Birkbeck University of London London WC1E 7HX

In this paper, we present a robust approach of digital watermarking embedding and retrieval for digital *** new approach works in special domain and it has two major steps: (1) to extract affine co-variant regions, and (2) to embed watermarks with a novel fuzzy inference *** advantage of this proposed approach is demonstrated by a large amount of experiments, which are mainly against different attacks, such as common image processing, rotation, scaling, cropping, and several other affine transformations.

关键词： Robust digital watermarking information security Affine co-variant regions Fuzzy inference system

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Resident participating GIS-based tsunami disaster control systems for local communities

Resident participating GIS-based tsunami disaster control sy...

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International Symposium on Communications and information Technologies

作者： Muramoto, Takashi Nakayama, Ken Kobayashi, Yoshitake Maekawa, Mamoru Faculty of Business Hachinohe University Aomori Japan Department of Information Systems Design Graduate School of Information Systems University of Electro-Communications Tokyo Japan Grid Computing and Distributed Systems (GRIDS) Laboratory Department of Computer Science and Software Engineering University of Melbourne Australia

ISBN: (纸本)9780780397408

We propose and experiment a Social Networking Service (SNS) for local communities for tsunami disaster control. It is an easy-to-use GIS-based system with powerful GIS analysis capabilities. One of the features of the system is resident participation. The GIS layer structure proposed in this paper nicely supports this user participation. The system architecture and the use of the system for tsunami disaster control are discussed. We report ongoing developments in Hachinohe-City, Japan.

关键词： GIS tsunami disaster control internet application system design

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Enhancing duplicate collection detection through replica boundary discovery

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10th Pacific-Asia Conference on Advances in Knowledge Discovery and data Mining, PAKDD 2006

作者： Zhang, Zhigang Jia, Weijia Li, Xiaoming Department of Computer Science City University of Hong Kong 83 Tat Chee Avenue Kowloon Hong Kong Institute of Network Computing and Information Systems School of Electronics Engineering and Computer Science Peking University Beijing China

ISBN: (纸本)3540332065

Web documents are widely replicated on the Internet. These replicated documents bring potential problems to Web based information systems. So replica detection on the Web is an indispensable task. The challenge is to find these duplicated collections from a very large data set with limited hardware resources in acceptable time. In this paper, we first introduce the notion of replica boundary to roughly reflect the situation of the replicas;then we propose an effective and efficient approach to discover the boundary of the replicas. The advantages of the proposed approach include: first, it dramatically reduces pair-wise document similarity computation, making it much faster than traditional replicated document detection approaches;second, it can identify the boundary of the replicated collections accurately, demonstrating to what extent two collections are replicated. On two web page sets containing 24 million and 30 million Web pages respectively, we evaluated the accuracy of the approach. © Springer-Verlag Berlin Heidelberg 2006.

关键词： Websites

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Artistic Mosaic Series Generation

Artistic Mosaic Series Generation

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作者： Li, Xuelong Yuan, Yuan Tao, Dacheng School of Computer Science and Information Systems Birkbeck University of London LondonWC1E7HX United Kingdom School of Computing and Applied Science Aston University BirminghamB47ET United Kingdom

Human tastes in art motivate the need for effective means to build a visual mosaic picture which is made up of many small tiles. In some previous work researchers have tried to translate pictures' styles.1 In this paper, a new approach to image processing in arts is presented in the domain of generating a series of artistic mosaic pictures. An arbitrary image is first translated into a mosaic-based one by dividing it into a number of sub-blocks each with the mean value of the pixels in it. Each of these small fragments can be assigned a new location within this image so that a new mosaic picture is generated. By this mean, images with similar color features can be used to create a series of mosaic pictures. The mosaic pictures consist of the same elements as each other, but might be extremely different from the semantic contents. A basic algorithm is presented, followed by some further improvements. Some preliminary experimental results are then given to show the impact of the proposed special techniques. © 2006 World Scientific Publishing Company.

关键词： Semantics

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Agile development of secure web applications 06

Agile development of secure web applications

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ICWE'06: 6th International Conference on Web Engineering

作者： Ge, Xiaocheng Paige, Richard F. Polack, Fiona A. C. Chivers, Howard Brooke, Phillip J. Dept. of Computer Science York University York United Kingdom Dept. of Information Systems Cranfield University Swindon United Kingdom School of Computing University of Teesside Middlesbrough United Kingdom

ISBN: (纸本)1595933522

A secure system is one that is protected against specific undesired outcomes. Delivering a secure system, and particularly a secure web application, is not easy. Integrating general-purpose information systems development methods with security development activities could be a useful means to surmount these difficulties [6]. Agile processes, such as Extreme Programming, are of increasing interest in software development. Most significantly for web applications, agile processes encourage and embrace requirements change, which is a desirable characteristic for web application development. In this paper, we present an agile process to deliver secure web applications. The contribution of the research is not the development of a new method or process that addresses security concerns. Rather, we investigate general-purpose information system development methods (e.g., Feature-Driven Development (FDD)) and mature security methods, namely risk analysis, and integrate them to address the development of secure web applications. The key features of our approach are (1) a process capable of dealing with the key challenges of web applications development, namely decreasing life-cycle times and frequently changing requirements;and (2) an iterative approach to risk analysis that integrates security design throughout the development process.

关键词： Web services

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Learning short multivariate time series models through evolutionary and sparse matrix computation

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Natural computing 2006年第4期5卷 387-426页

作者： Swift, Stephen Kok, Joost Liu, Xiaohui School of Information Systems Computing and Mathematics Brunel University Uxbridge Middlesex UB8 3PH United Kingdom Leiden Institute of Advanced Computer Science Leiden University Leiden RA P.O. Box 95122300 Netherlands

Multivariate time series (MTS) data are widely available in different fields including medicine, finance, bioinformatics, science and engineering. Modelling MTS data accurately is important for many decision making activities. One area that has been largely overlooked so far is the particular type of time series where the data set consists of a large number of variables but with a small number of observations. In this paper we describe the development of a novel computational method based on Natural Computation and sparse matrices that bypasses the size restrictions of traditional statistical MTS methods, makes no distribution assumptions, and also locates the associated parameters. Extensive results are presented, where the proposed method is compared with both traditional statistical and heuristic search techniques and evaluated on a number of criteria. The results have implications for a wide range of applications involving the learning of short MTS models. © Springer science+Business Media, Inc. 2006.

关键词： Glaucoma Natural computation Short multivariate time series Short-term forecasting Sparse matrices

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Economy-based data replication broker

Economy-based data replication broker

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e-science 2006 - 2nd IEEE International Conference on e-science and Grid computing

作者： Lin, Henry Abawajy, J.H. Buyya, Rajkumar Grid Computing and Distributed Systems Lab. Dept. of Computer Science and Software Eng. University of Melbourne Melbourne VIC 3010 Australia Grid and Pervasive Computing Lab. School of Eng. and Information Technology Deakin University Geelong VIC 3072 Australia

ISBN: (纸本)0769527345

data replication is one of the key components in data grid architecture as it enhances data access and reliability and minimises the cost of data transmission. In this paper, we address the problem of reducing the overheads of the replication mechanisms that drive the data management components of a data grid. We propose an approach that extends the resource broker with policies that factor in user quality of service as well as service costs when replicating and transferring data. A realistic model of the data grid was created to simulate and explore the performance of the proposed policy. The policy displayed an effective means of improving the performance of the grid network traffic and is indicated by the improvement of speed and cost of transfers by brokers. © 2006 IEEE.

关键词： data reduction

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Extracting refactoring trends from open-source software and a possible solution to the 'related refactoring' conundrum

Extracting refactoring trends from open-source software and ...

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2006 ACM Symposium on Applied computing

作者： Advani, Deepak Hassoun, Youssef Counsell, Steve School of Computer Science Birkbeck University of London Malet Street London WC1E 7HX Department of Information Systems and Computing Brunel University Uxbridge Middlesex UB8 3PH

ISBN: (纸本)1595931082

Refactoring, as a software engineering discipline has emerged over recent years to become an important aspect of maintaining software. Refactoring refers to the restructuring of software according to specific mechanics and principles. In this paper, we describe a tool that allows refactoring data across multiple versions of seven open-source software systems to be collected. The tool automates the identification of refactorings as program transformations between consecutive software releases. The same tool thus allowed an empirical analysis of software development across versions from the perspective of those transformations. We describe results for the systems analysed and point to key conclusions from our analysis. In particular, we investigate a problematic empirical question as to whether certain refactorings are related, i.e., they cannot be undertaken in isolation without other refactorings being undertaken in parallel. In this context, we focus specifically on the four most common refactorings identified by the tool from three of the open-source systems and use a dependency graph to inform conclusions about the empirical data extracted by the tool. An interesting result relating to some common refactorings is described. Copyright 2006 ACM.

关键词： Software engineering

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The Effectiveness of Refactoring, Based on a Compatibility Testing Taxonomy and a Dependency Graph

The Effectiveness of Refactoring, Based on a Compatibility T...

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Testing: Academic and Industrial Conference - Practice And Research Techniques (TAICPART)

作者： S. Counsell R.M. Hierons R. Najjar G. Loizou Y. Hassoun School of Information Systems Computing and Mathematics Brunei University Uxbridge Middlesex UK School of Computer Science and Information Systems London UK Department of Computing Imperial College London London UK

In this paper, we describe and then appraise a testing taxonomy proposed by van Deursen and Moonen (VD&M) based on the post-refactoring repeatability of tests. Four categories of refactoring are identified by VD&M ranging from semantic-preserving to incompatible, where, for the former, no new tests are required and for the latter, a completely new test set has to be developed. In our appraisal of the taxonomy, we heavily stress the need for the inter-dependence of the refactoring categories to be considered when making refactoring decisions and we base that need on a refactoring dependency graph developed as part of the research. We demonstrate that while incompatible refactorings may be harmful and time-consuming from a testing perspective, semantic-preserving refactorings can have equally unpleasant hidden ramifications despite their advantages. In fact, refactorings which fall into neither category have the most interesting properties. We support our results with empirical refactoring data drawn from seven Java open-source systems (OSS) and from the same analysis form a tentative categorization of code smells

关键词： Testing Taxonomy information systems Appraisal Java Open source software Software maintenance computer science Mathematics Educational institutions

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Towards a common ontology for business models

Towards a common ontology for business models

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3rd Open Interop Workshop on Enterprise Modelling and Ontologies for Interoperability, EMOI - INTEROP 2006 - Co-located with the 18th Conference on Advanced information systems Engineering, CAiSE 2006

作者： Andersson, Birger Bergholtz, Maria Edirisuriya, Ananda Ilayperuma, Tharaka Johannesson, Paul Grégoire, Bertrand Schmitt, Michael Dubois, Eric Abels, Sven Hahn, Axel Gordijn, Jaap Weigand, Hans Wangler, Benkt Royal Institute of Technology Department of Computer and Systems Sciences Sweden Public Research Centre Henri Tudor Luxembourg University of Oldenburg Business Information Systems Department of Computing Science Germany Dept. of Informatic Science University Oldenburg Germany Department of Computer Science Vrije Universiteit Amsterdam Netherlands Tilburg University P.O.Box 90153 5000 LE Tilburg Netherlands University of Skövde School of Humanities and Informatics Sweden

To create an understanding of enterprises and the ways they do business, a starting point could be to identify the main actors and the values transferred between them. Business models are created in order to make clear who the business actors are in a business case and to make their relations explicit. The relations are formulated in terms of values exchanged between the actors. The purpose of the work reported in this paper is to create a better understanding of business models by identifying basic notions used in such models. It does so by constructing a common ontology based on three established business model ontologies: e3-value, REA, and BMO. By means of a careful analysis of these ontologies a conceptual schema is created that defines the common concepts. An example is worked out that explains how the common ontology should be understood.

关键词： Ontology

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