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MineNet'07: 3rd Annual ACM Workshop on Mining Network Data

作者： Erman, Jeffrey Mahanti, Anirban Arlitt, Martin Department of Computer Science University of Calgary Canada Department of Computer Science and Engineering Indian Institute of Technology Delhi India Enterprise Systems and Software Lab HP Labs Palo Alto

ISBN: (纸本)1595937927

Numerous network traffic classification approaches have recently been proposed. In general, these approaches have focused on correctly identifying a high percentage of total flows. However, on the Internet a small number of "elephant" flows contribute a significant amount of the traffic volume. In addition, some application types like Peer-to-Peer (P2P) and FTP contribute more elephant flows than other applications types like Chat. In this opinion piece, we discuss how evaluating a classifier on flow accuracy alone can bias the classification results. By not giving special attention to these traffic classes and their elephant flows in the evaluation of traffic classification approaches we might obtain significantly different performance when these approaches are deployed in operational networks for typical traffic classification tasks such as traffic shaping. We argue that byte accuracy must also be used when evaluating the accuracy of traffic classification algorithms. Copyright 2007 ACM.

关键词： Telecommunication traffic

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A SLA-oriented management of containers for hosting stateful web services

A SLA-oriented management of containers for hosting stateful...

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3rd IEEE International Conference on e-Science and Grid Computing

作者： Reich, Christoph Bubendorfer, Kris Banholzer, Matthias Buyya, Rajkumar Department of Computer Science Hochschule Furtwangen University Germany School of Mathematics Statistics and Computer Science Victoria University of Wellington New Zealand Grid Computing and Distributed Systems (GRIDS) Laboratory Department of Computer Science and Software Engineering University of Melbourne Australia

ISBN: (纸本)9780769530642

Service-Oriented Architectures provide integration of interoperability for independent and loosely coupled services. Web services and the associated new standards such as WSRF are frequently used to realise such Service-Oriented Architectures. In such systems, autonomic principles of self-configuration, self-optimisation, self-healing and self-adapting are desirable to ease management and improve robustness. In this paper we focus on the extension of the self management and autonomic behaviour of a WSRF container connected by a structured P2P overlay network to monitor and rectify its QoS to satisfy its SLAs. The SLA plays an important role during two distinct phases in the life-cycle of a WSRF container Firstly during service deployment when services are assigned to containers in such a way as to minimise the threat of SLA violations, and secondly during maintenance when violations are detected and services are migrated to other containers to preserve QoS. In addition, as the architecture has been designed and built using standardised modem technologies and with high levels of transparency, conventional web services can be deployed with the addition of a SLA specification.

关键词： Containers

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Comparing wired-side and wireless-side WLAN monitoring techniques: A case study

Comparing wired-side and wireless-side WLAN monitoring techn...

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32nd IEEE Conference on Local computer Networks, LCN 2007

作者： Mailanti, Aniket Williamson, Carey Arlitt, Martin Mailanti, Anirban Department of Computer Science University of Calgary Canada Enterprise Systems and Software Lab. HP Labs United States Department of Computer Science and Engineering Indian Institute of Technology Delhi India

ISBN: (纸本)0769530001

Wireless Local Area Networks (WLANs) have become omnipresent: WLANs are available at airports, coffee shops, university campuses, corporate environments, and homes. This surge in the popularity of WLANs motivates the study of how these networks are used. Characterizing WLANs, however, is complicated by a number of factors including the geographic diversity of WLAN deployments and the need for capturing activity in the wireless environment instead of the wired environment. In this paper, we describe our experiences with the deployment and use of a remote passive wireless-side measurement infrastructure for monitoring usage of WLANs, and compare our results with a commonly used wired-side measurement technique. © 2007 IEEE.

关键词： Wireless local area networks (WLAN)

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Kansei with behavioral patterns for human-robot interaction in ubiquitous environments

Kansei with behavioral patterns for human-robot interaction ...

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作者： Balasuriya, Janaka Chaminda Kamohara, Kouhei Marasinghe, Chandrajith Ashuboda Watanabe, Keigo Izumi, Kiyotaka Department of Advanced Systems Control Engineering Saga University 1-Honjomachi Saga 840-8502 Japan Software Engineering Lab. Department of Computer Software University of Aizu Aizu-Wakamatsu Fukushima Japan

ISBN: (纸本)9784990288013

Humans have two distinct features with compared to any other living being;unique physical nature and emotions / feelings. Anybody who studies on humans or trying to construct human like machines should consider these two vital facts. When robots are interacting with humans and other objects, they certainly have a safe distance between them and the object. But how can this distance be optimized when interacting with humans? Will there be any advantages over achieving this? Will it help to improve the condition of robots? Can it be a mere constant distance? How will the humans react? In order to 'humanize' robots, they (robots) should also have certain understating of such emotions that we, humans have. In this research project, authors are trying to 'teach' one such human understanding, commonly known as 'personal space' to autonomous mobile robots. ©ISAROB 2007.

关键词： Human robot interaction

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Fuzzy Prolog as Cognitive Layer in RoboCupSoccer

Fuzzy Prolog as Cognitive Layer in RoboCupSoccer

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IEEE Symposium on Computational Intelligence and Games, CIG

作者： Susana Munoz-Hernandez Wiratna Sari Wiguna Department of Languages and Information Systems and Software Engineering Technical University Madrid Spain School of Computer Science Technical University Madrid Spain

RoboCupSoccer domain has several leagues which varies in the rule of play such as specification of players, number of players, field size, and time length. Nevertheless, each RoboCup league is a variant of a soccer league and therefore they are based on some basic rules of soccer. A layered design of agents system presented in the work of Garcia et al. (2004) shows a modular approach to build control for a team of robots participating in RoboCupSoccer E-League. Based on this design, we propose a generalized architecture offering flexibility to switch between leagues and programming language while maintaining Prolog as cognitive layer. Prolog is a very convenient tool to design strategies for soccer players using simple rules close to human reasoning. Sometimes this reasoning needs to deal with uncertainty, fuzziness or incompleteness of the information. In these cases it is useful Fuzzy Prolog (Guadarrama et al., 2004), (Munoz-Hernandez and Vaucheret, 2005), (Munoz-Hernandez and Gomez-Perez, 2005), (Munoz-Hernandez and Vaucheret, 2006). In this paper we propose to use a combination of Prolog (that is crisp) and Fuzzy Prolog to implement the cognitive layer in RoboCupSoccer, which has the advantage of incorporating as conventional logic as fuzzy logic in this layer. A prototype of a team based on this architecture has been build for RoboCup soccer simulator, and we show that this approach provides a convenient way of incorporating a team strategy in high level (human-like) manner, where technical details are encapsulated and fuzzy information is represented

关键词： Robot sensing systems Fuzzy logic Intelligent robots Robot kinematics Logic programming Cognitive robotics Humans Uncertainty Fuzzy reasoning Computational modeling

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Exception diagnosis architecture for open multi-agent systems

Exception diagnosis architecture for open multi-agent system...

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5th Workshop on software engineering for Large-Scale Multi-Agent systems, SELMAS 2006

作者： Shah, Nazaraf Chao, Kuo-Ming Godwin, Nick Software Engineering Research Group Sheffield Hallam University Sheffield United Kingdom DSM Research Group Department of Computer and Network Systems Coventry University Coventry United Kingdom

ISBN: (纸本)9783540731306

Multi-Agent systems (MAS) are collection of loosely coupled intelligent agents. These systems operate in a distributed, highly dynamic, unpredictable and unreliable environment in order to meet their overall goals. Agents in such an environment are vulnerable to different types of run time exceptions. It is necessary to have an effective exception diagnosis and resolution mechanism in place in order to ensure reliable interactions between agents. In this paper, we propose novel exception diagnosis architecture for open MAS. The proposed architecture classifies the runtime exceptions and diagnoses the underlying causes of exceptions using a heuristic classification technique. The proposed architecture is realised in terms of specialised exception diagnosing agents known as sentinel agents. The sentinel agents act as delegates of problem solving agents and mediate interactions between them. © Springer-Verlag Berlin Heidelberg 2007.

关键词： Multi agent systems

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A Robust and Low-Complexity Gas Recognition Technique for On-Chip Tin-Oxide Gas Sensor Array

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Journal of Sensors 2008年第1期2008卷

作者： Farid Flitti Aicha Far Bin Guo Amine Bermak School of Computer Science and Software Engineering The University of Western Australia 35 Stirling Highway CRAWLEY WA 6009 Australiauwa.edu.au Smart Sensory Integrated Systems Lab ECE Department The Hong Kong University of Science and Technology Clear Water Bay Kowloon Hong Kongust.hk

Gas recognition is a new emerging research area with many civil, military, and industrial applications. The success of any gas recognition system depends on its computational complexity and its robustness. In this work, we propose a new low-complexity recognition method which is tested and successfully validated for tin-oxide gas sensor array chip. The recognition system is based on a vector angle similarity measure between the query gas and the representatives of the different gas classes. The latter are obtained using a clustering algorithm based on the same measure within the training data set. Experimented results on our in-house gas sensors array show more than 98 % of correct recognition. The robustness of the proposed method is tested by recognizing gas measurements with simulated drift. Less than 1 % of performance degradation is noted at the worst case scenario which represents a significant improvement when compared to the current state-of-the-art.

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Impact of TSPi on software Projects

Impact of TSPi on Software Projects

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Electronics, Robotics and Automotive Mechanics Conference

作者： G. Cuevas J. Calvo Manzano T. San Feliu J. Mejia M. Munoz S. Bayona Science Computer Languages and Software Engineering Department Computer Science School Polytechnical University of Madrid Madrid Spain

This paper describes the effect of TSPi (introduction to the team software process) on key performance dimensions in software projects, including the ability to estimate, the quality of the software produced and the productivity achieved. The study examines the impact of the TSPi on the performance of 31 software teams. Finally an analysis comparing the results through two iterations is discussed.

关键词： software quality Productivity Quality management software performance Data engineering computer science Buildings Process planning Industrial training Data analysis

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A Modeling Framework for the Development of Provably Secure E-Commerce Applications

A Modeling Framework for the Development of Provably Secure ...

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International Conference on software engineering Advances (ICSEA)

作者： Nina Moebius Dominik Haneberg Wolfgang Reif Gerhard Schellhorn Institute of Computer Science Department of Software Engineering and Programming Languages University of Augsburg Augsburg Germany

Developing security-critical applications is very difficult and the past has shown that many applications turned out to be erroneous after years of usage. For this reason it is desirable to have a sound methodology for developing security-critical e-commerce applications. We present an approach to model these applications with the Unified Modeling Language (UML) [1] extended by a UML profile to tailor our models to security applications. Our intent is to (semi-) automatically generate a formal specification suitable for verification as well as an implementation from the model. Therefore we offer a development method seamlessly integrating semi-formal and formal methods as well as the implementation. This is a significant advantage compared to other approaches not dealing with all aspects from abstract models down to code. Based on this approach we can prove security properties on the abstract protocol level as well as the correctness of the protocol implementation in Java with respect to the formal model using the refinement approach. In this paper we concentrate on the modeling with UML and some details regarding the transformation of this model into the formal specification. We illustrate our approach on an electronic payment system called Mondex [10]. Mondex has become famous for being the target of the first ITSEC evaluation of the highest level E6 which requires formal specification and verification.

关键词： Unified modeling language Object oriented modeling Formal specifications Java Application software Smart cards Communication system security Cryptographic protocols computer science software engineering

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Evaluation of medical image watermarking with tamper detection and recovery (AW-TDR)

Evaluation of medical image watermarking with tamper detecti...

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29th Annual International Conference of IEEE-EMBS, engineering in Medicine and Biology Society, EMBC'07

作者： Zain, Jasni M. Fauzi, Abdul R. M. IEEE Faculty of Computer Systems and Software Engineering University Malaysia Pahang Locked Bag 12 25000 Kuantan Pahang Malaysia Department of Internal Medicine International Islamic University Kuantan Pahang

ISBN: (纸本)1424407885

This paper will study and evaluate watermarking technique by Zain and Fauzi [1]. Recommendations will then be made to enhance the technique especially in the aspect of recovery or reconstruction rate for medical images. A proposal will also be made for a better distribution of watermark to minimize the distortion of the Region of Interest (ROI). The final proposal will enhance AW-TDR in three aspects;firstly the image quality in the ROI will be improved as the maximum change is only 2 bits in every 4 pixels, or embedding rate of 0.5 bits/pixel. Secondly the recovery rate will also be better since the recovery bits are located outside the region of interest. The disadvantage in this is that, only manipulation done in the ROI will be detected. Thirdly the quality of the reconstructed image will be enhanced since the average of 2 × 2 pixels would be used to reconstruct the tampered image. © 2007 IEEE.

关键词： Digital watermarking

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