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6th International Conference on Network and System Security, NSS 2012

作者： Liu, Shengli Zhang, Fangguo Chen, Kefei Dept. of Computer Science and Engineering Shanghai Jiao Tong University Shanghai 200240 China School of Information Science and Technology Sun Yat-sen University Guangzhou 510006 China State Key Laboratory of Information Security Institute of Software Chinese Academy of Sciences China Shanghai Key Laboratory of Scalable Computing and Systems Shanghai China

ISBN: (纸本)9783642346002

Chosen-ciphertext security has been well-accepted as a standard security notion for public key encryption. But in a multi-user surrounding, it may not be sufficient, since the adversary may corrupt some users to get the random coins as well as the plaintexts used to generate ciphertexts. The attack is named "selective opening attack". We study how to achieve full-fledged chosen-ciphertext security in selective opening setting directly from the DDH assumption. Our construction is free of chameleon hashing, since tags are created for encryptions in a flexible way to serve the security proof. © 2012 Springer-Verlag.

关键词： Public key cryptography

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SpendInsight: Some remarks on deploying an intelligent spend-analysis system

SpendInsight: Some remarks on deploying an intelligent spend...

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AISB/IACAP World Congress 2012: 1st Symposium on Nature Inspired Computation and Applications, NICA 2012, Part of Alan Turing Year 2012

作者： Barraclough, Richard W. Bishop, J. Mark Danicic, Sebastian Nasuto, Slawomir J. Mitchell, Richard J. UK PLC 5 Jupiter House Calleva Park Aldermaston Reading Berkshire RG7 8NN United Kingdom Dept. Computing Goldsmiths University of London New Cross London SE14 6NW United Kingdom Cybernetics Research Group School of Systems Engineering University of Reading Reading Berks United Kingdom

ISBN: (纸本)9781908187253

A three way collaboration between industry and two UK universities led to the development of an intelligent spend analysis system. In this paper we outline how a novel combination of the 'Decision Tree' and 'Bayesian Classifier' algorithms1, working with 'big data' on a real world e-procurement problem, led to the development of sophisticated, A.I. driven, intelligent spend analysis software, subsequently commercially marketed throughout the UK as the 'SpendInsight' system;a system recently deployed by the UK-National Audit Office (NAO) to highlight potential savings to UK-National Health Service (NHS) procurement of £500 million per annum [14]. We subsequently investigate how deep-rooted 'institutional inertia' can often work to inhibit the full realisation of the potential economic benefits to an organisation that should accrue from the deployment of intelligent spend analysis. Finally we demonstrate how, by linking the institutional roll-out of intelligent spend analysis to an overarching green policy agenda, such barriers may be overcome. We conclude the paper by showing (perhaps counter-intuitively) that at the societal level a strong green policy agenda may realise significant benefit for both the environment and the economy.

关键词： Decision trees

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Using a sensor-assisted model for learning retention in an e-book reading environment

Using a sensor-assisted model for learning retention in an e...

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IEEE Instrumentation and Measurement Technology Conference

作者： Ting-Ting Wu Jan-Pan Hwang Yueh-Min Huang Qing Tan Subhas Mukhopadhyay Dept. of Engineering Science National Chung Kung University Tainan ROC School of Computing & Information Systems Athabasca University Edmonton Canada School of Engineering & Advanced Technology Massey University Palmerston North New Zealand

Modern life has a strong tie with ICT technology, so as to the sensing technology which has played an important role than before. Its application is somewhat more than we have learned, such as education. Meanwhile, with the advance of software/hardware and the popularity of the Internet, e-books have drawn much of attention. With the introduction of the sensing technology to e-readers, it instills e-books the functions of reading or learning behavior. In self-learning situation, learners often suffer from detraction problem which cannot be easily detected and amended. In this study, we proposed a sensor-assisted learning system to monitor a learner's retention during the reading or learning process. The system has been incorporated into an e-book platform, or e-reader to become a personalized e-reader system. We proceed to conduct two experiments for sensor-assisted model (SAM) and e-book systems, respectively. The ultimate objective is to establish an adaptive personalized learning system by the feedback of data collected by sensors.

关键词： Sensors Electronic publishing Educational institutions Visualization Decision trees Materials

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Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics): Preface

Lecture Notes in Computer Science (including subseries Lectu...

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Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics) 2012年 7366 LNAI卷 VI页

作者： Zhang, Huaguang Hussain, Amir Liu, Derong Wang, Zhanshan Northeastern University College of Information Science and Engineering Shenyang 110004 China University of Stirling Dept. of Computing Science and Mathematics Stirling FK9 4LA United Kingdom Institute of Automation Chinese Academy of Sciences State Key Laboratory of Managment and Control for Complex Systems Beijing 100190 China

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A model-driven framework for ETL process development

A model-driven framework for ETL process development

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14th ACM International Workshop on Data Warehousing and Online Analytical Processing, DOLAP'11

作者： El Akkaoui, Zineb Zimányi, Esteban Mazón, Jose-Norberto Trujillo, Juan Dept. of Computer and Decision Engineering Université Libre de Bruxelles Brussels Belgium Dept. of Software and Computing Systems University of Alicante Alicante Spain

ISBN: (纸本)9781450309639

ETL processes are the backbone component of a data warehouse, since they supply the data warehouse with the necessary integrated and reconciled data from heterogeneous and distributed data sources. However, the ETL process development, and particularly its design phase, is still perceived as a time-consuming task. This is mainly due to the fact that ETL processes are typically designed by considering a specific technology from the very beginning of the development process. Thus, it is difficult to share and reuse methodologies and best practices among projects implemented with different technologies. To the best of our knowledge, no attempt has been yet dedicated to harmonize the ETL process development by proposing a common and integrated development strategy. To overcome this drawback, in this paper, a framework for model-driven development of ETL processes is introduced. The benefit of our framework is twofold: (i) using vendor-independent models for a unified design of ETL processes, based on the expressive and well-known standard for modeling business processes, the Business Process Modeling Notation (BPMN), and (ii) automatically transforming these models into the required vendor-specific code to execute the ETL process into a concrete platform. © 2011 ACM.

关键词： Data warehouses

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Combining congested-flow isolation and injection throttling in HPC interconnection networks

Combining congested-flow isolation and injection throttling ...

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40th International Conference on Parallel Processing, ICPP 2011

作者： Escudero-Sahuquillo, Jesus Gran, Ernst Gunnar Garcia, Pedro Javier Flich, Jose Skeie, Tor Lysne, Olav Quiles, Francisco Jose Duato, Jose Dept. of Computing Systems University of Castilla La Mancha Spain Simula Research Laboratory Norway Dept. of Computer Engineering Technical University of Valencia Spain

ISBN: (纸本)9780769545103

Existing congestion control mechanisms in interconnects can be divided into two general approaches. One is to throttle traffic injection at the sources that contribute to congestion, and the other is to isolate the congested traffic in specially designated resources. These two approaches have different, but non-overlapping weaknesses. In this paper we present in detail a method that combines injection throttling and congested-flow isolation. Through simulation studies we first demonstrate the respective flaws of the injection throttling and of flow isolation. Thereafter we show that our combined method extracts the best of both approaches in the sense that it gives fast reaction to congestion, it is scalable and it has good fairness properties with respect to the congested flows. © 2011 IEEE.

关键词： Interconnection networks (circuit switching)

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Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics): Preface

Lecture Notes in Computer Science (including subseries Lectu...

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Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics) 2012年 7248 LNCS卷 VI-XI页

作者： Di Chio, Cecilia Agapitos, Alexandros Cagnoni, Stefano Cotta, Carlos De Vega, F. Fernández Di Caro, Gianni Drechsler, Rolf Ekárt, Anikó Esparcia-Alcázar, Anna I. Farooq, Muddassar Langdon, William B. Merelo-Guervós, Juan-J. Preuss, Mike Richter, Hendrik Silva, Sara Simões, Anabela Squillero, Giovanni Tarantino, Ernesto Tettamanzi, Andrea G.B. Togelius, Julian Urqhart, Neil Uyar, A. Şima Yannakakis, Georgios N. University College Dublin Ireland Dept. of Computer Engineering University of Parma Italy Dept. Lenguajes Y Ciencias de la Computación University of Málaga Spain University of Extremadura Spain Lugano Switzerland Cyber-Physical Systems DFKI Bremen Germany Computer Science Aston University Birmingham United Kingdom S2 Grupo Spain National University of Computer and Emerging Sciences Islamabad Pakistan University College London United Kingdom Departamento de Arquitectura Y Tecnología de Computadores Universidad de Granada Spain TU Dortmund University Germany Faculty of Electrical Engineering and Information Technology HTWK Leipzig University of Applied Sciences Germany INESC-ID Lisboa Portugal Coimbra Institute of Engineering Coimbra Polytechnic Coimbra Portugal Politecnico di Torino Italy Institute for High Performance Computing and Networking Italy Università degli Studi di Milano Italy Center for Computer Games Research IT University of Copenhagen Denmark Centre for Emergent Computing Edinburgh Napier University United Kingdom Dept. of Computer Engineering Istanbul Technical University Turkey

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Constructing directed semantic relationships between concepts for training semantic reasoning

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Lecture Notes in Computer Science

作者： Liu, Ming-Chi Huang, Yueh-Min Kinshuk Wen, Dunwei Dept. of Engineering Science National Cheng Kung University Tainan Taiwan School of Computing and Information Systems Athabasca University Canada

ISBN: (纸本)9783642234552

With the increasing volume of learning resources on the Web, the need for automatic mechanism for extracting knowledge has become more critical. The aim of this paper is to propose an approach that can automatically construct directed semantic relationships between concepts to help teachers or students efficiently retrieve appropriate knowledge from the Web. The most distinctive characteristic of this approach is its support for constructing with expandable query. This characteristic addresses the problem of users with varying backgrounds. Working with semantically similar expanded terms allows them to filter out irrelevant terms and focus on corresponding contexts. In addition, we design two learning tasks to show that how this the constructed DSR graph can be used to scaffold students' semantic reasoning. The case study suggests relevant benefits of applying semantic technologies in an educational context. © 2011 Springer-Verlag.

关键词： Students

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A conceptual design of multi-agent based personalized quiz game

A conceptual design of multi-agent based personalized quiz g...

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International Conference on Advanced Learning Technologies

作者： Weng, Martin M. Fakinlede, Ireti Lin, Fuhua Shih, Timothy K. Chang, Maiga Dept. of Computer Science and Information Engineering Tamkang University Taipei Taiwan School of Computing and Information Systems Athabasca University Athabasca Canada Dept. of Computer Science and Information Engineering National Central University Taoyuan Taiwan

ISBN: (纸本)9780769543468

This paper presents the conceptual design of a virtual 3D quiz game based on a multi-agent system (MAS) architecture aptly named QuizMASter. The QuizMASter supports formative assessment by providing adaptive testing and feedback using intelligent pedagogical agents within an immersive game-based virtual learning environment. This enables instructors to use assessment as a motivational tool within an entertaining context where students do not feel the usual pressures related to taking tests. © 2011 IEEE.

关键词： Multi agent systems

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Perspective On Gallium Nitride

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MRS Online Proceedings Library 2011年第1期162卷 515-524页

作者： Pankove, Jacques I. Center for Optoelectronic Computing Systems Dept. of Electrical and Computer Engineering University of Colorado at Boulder Boulder United States Center for Optoelectronic Computing Systems Dept. of Electrical and Computer Engineering Solar Energy Research Institute Golden United States

This paper is a historical review (mostly personal) of some major developments in this wide, direct gap material. It includes key technologies of synthesis, electrical and optical properties and many applications.

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