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A distributed heuristic for decentralized workflow scheduling in global Grids

A distributed heuristic for decentralized workflow schedulin...

引用

International Workshop on Grid computing

作者： Mustafizur Rahman Rajiv Ranjan Rajkumar Buyya Grid Computing and Distributed Systems Laboratory Department of Computer Science and Software Engineering University of Melbourne Australia Service Oriented Computing Research Group School of Computer Science and Engineering University of New South Wales Australia

Efficient scheduling is a key concern for the effectual execution of performance driven Grid applications, such as workflows. Many list heuristics have been developed for scheduling workflows in centralized Grid environment. However, in this paper, we present a distributed list heuristic for decentralized scheduling of workflow applications in global Grids. The simulation results show that the proposed scheduling approach is scalable with respect to increased workload on the system.

关键词： Processor scheduling Grid computing Resource management Computer science Scheduling algorithm Laboratories Software engineering Distributed computing Application software Peer to peer computing

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Decoupled fixed point transformation based adaptive control of the generalized 2 DOF Φ6-type Van der Pol oscillator 10

Decoupled fixed point transformation based adaptive control ...

引用

2009 10th European Control Conference, ECC 2009

作者： Tar, Jozsef K. Rudas, Imre J. Bito, Janos F. Machado, Jose A. Tenreiro Kozlowski, Krzysztof R. Institute of Intelligent Engineering Systems John von Neumann Faculty of Informatics Budapest Tech Bécsiút 96/B BudapestH-1034 Hungary Department of Electrotechnical Engineering Institute of Engineering of Porto Rua Dr. Antonio Bernardino de Almeida Porto4200-072 Portugal Control and Systems Engineering Computing Science and Management Poznan University of Technology ul. Piotrowo 3a Poznan60-965 Poland

ISBN: (纸本)9783952417393

In this paper a possible application of a novel adaptive control approach is reported that fits to the 'traditional line of thinking' according to which in the most practical cases neither very precise, nor even complete system model is needed for obtaining precise control for dynamical systems. The validity of this statement is briefly pointed out in the most popular approaches as the main idea of the Robust Sliding Mode / Variable Structure Controllers, in Lyapunov's 2nd Method, and in a recently published problem tackling based on the simple geometric interpretation of the Singular Value Decomposition. In the present approach differential equations are deduced from iterative Cauchy sequences to realize adaptive control of a coupled nonlinear system in 'decoupled manner', using single dimensional projections of the 'acceleration space'. The paradigm on which the method is demonstrated is a 2 dimensional generalization of the originally single dimensional Φ6-type Van der Pol oscillator that is a popular paradigm of chaotic systems. Further possible generalizations of the novel method is outlined, too. © 2009 EUCA.

关键词： Chaotic systems

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Illumination Invariant Object Tracking with Incremental Subspace Learning

Illumination Invariant Object Tracking with Incremental Subs...

引用

International Conference on Image and Graphics (ICIG)

作者： Gang Yu Hongtao Lu MOE-Microsoft Laboratory of Intelligent Computing and Intelligent Systems Department of Computer Science and Engineering Shanghai JiaoTong University Shanghai China

ISBN: (纸本)9781424452378

In this paper, we present an efficient and robust subspace learning based object tracking algorithm with special illumination handling. Illumination variances pose a great challenge to most of object tracking algorithms. In this paper, an edge orientation based feature has been proposed and proven to approximately invariant to illumination changes. Besides, we utilize the incremental subspace learning based particle filter framework which is effective to handle various appearance changes. To reduce the amount of computation when the particle number is large, a new layer of preprocessing step has been added to the particle filter framework with the help of edge orientation features. From the experimental m results, it is obvious that our proposed algorithm achieves promising performance especially in the scenarios with large illumination changes.

关键词： Lighting Target tracking Stochastic processes Particle filters Iterative algorithms Optimization methods Stochastic resonance Noise robustness Computer graphics Laboratories

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A utility model for peering of multi-provider content delivery services

A utility model for peering of multi-provider content delive...

引用

Conference on Local Computer Networks (LCN)

作者： Mukaddim Pathan Rajkumar Buyya Grid Computing and Distributed Systems GRIDS Laboratory Department of Computer Science and Software Engineering University of Melbourne Parkville VIC Australia

Peering of Content Delivery Networks (CDNs) allow providers to rapidly scale-out to meet both flash crowds and anticipated increases in demand. Recent trends foster the need for a utility model for content delivery services to provide transparency, high availability, reduced investment cost, and improved content delivery performance. Analysis of prior work reveals only a modest progress in evaluating the utility for peering CDNs. In this paper, we introduce a utility model and measure the content-serving ability of the peering CDNs system. Our model assists in providing a customer view of the system's health for different traffic types. Our model also captures the traffic activities in the system and helps to reveal the true propensities of participating CDNs to cooperate in peering. Through extensive simulations we unveil many interesting observations on how the utility of the peering CDNs system is varied for different system parameters and provide incentives for their exploitation in the system design.

关键词： Costs Traffic control Investments Web server Computer networks Grid computing Laboratories Computer science Software engineering Availability

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A Heuristic Approach for Capacity Control in Clouds

A Heuristic Approach for Capacity Control in Clouds

引用

IEEE International Conference on E-Commerce Technology Workshops

作者： Arun Anandasivam Stefan Buschek Rajkumar Buyya Institute for Information Systems and Management University of Karlsruhe Germany Grid Computing and Distributed Systems Laboratory Department of Computer Science and Software Engineering University of Melbourne Australia

ISBN: (纸本)9781424446469;9780769537559

Cloud resource providers in a market face dynamic and unpredictable consumer behavior. The way, how prices are set in a dynamic environment, can influence the demand behavior of price sensitive customers. A cloud resource provider has to decide on how to allocate his scarce resources in order to maximize his profit. The application of bid price control for evaluating incoming service requests is a common approach for capacity control in network revenue management. In this paper we introduce a customized version of the concept of self-adjusting bid prices and apply it to the area of cloud computing. Furthermore, we perform a simulation in order to test the efficiency of the proposed model.

关键词： Resource management Cloud computing Grid computing Consumer behavior Computational modeling Business Distributed computing Control systems Management information systems Conference management

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A higher order adaptive approach to tackle the swinging problem

A higher order adaptive approach to tackle the swinging prob...

引用

10th International Symposium of Hungarian Researchers on Computational Intelligence and Informatics, CINTI 2009

作者： Tar, József K. Rudas, Imre J. Bitó, János F. Tenreiro Machado, José A. Kozlowski, Krzysztof R. Telematics and Communications Informatics Knowledge Centre Hungary John Von Neumann Faculty of Informatics Institute of Intelligent Engineering Systems Budapest Tech Bécsi út 96/B H-1034 Budapest Hungary Department of Electrotechnical Engineering Institute of Engineering of Porto Rua Dr. Antonio Bernardino de Almeida 4200-072 Porto Portugal Poznan University of Technology Control and Systems Engineering Computing Science and Management Piotrowo 3a 60-965 Poznan Poland

In numerous practical applications precise control of a subsystem passively connected to a precisely controllable subsystem by elastic connection is needed. As typical example is a crane carrying its payload swinging on an elastic string can be mentioned. From the point of view of control technology this task is interesting since the connected degree of freedom has little damping and it is apt to keep swinging accordingly. The traditional approaches apply the input shaping technology to assist the human operator responsible for the manipulation task. In the present paper a novel adaptive approach applying fixed point transformations based iterations having local basin of attraction is proposed for simultaneously tackle the problems originating from the imprecisions of the available dynamic model of the system to be controlled and the swinging phenomenon. In the simulation investigations presented a simple model consisting of two connected masspoints is considered: one of them can directly by controlled by control forces, the other one (in the role of the payload) is dragged by the controlled point via an elastic spring. The control considers the 4th time-derivative of the trajectory of the dragged system.

关键词： Degrees of freedom (mechanics)

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Heat-stimulus correction for pulsed-infrared thermography

Heat-stimulus correction for pulsed-infrared thermography

引用

Thermosense XXXI

作者： Benítez, Hernan D. Ibarra-Castanedo, Clemente Bendada, Abdel Hakim Maldague, Xavier Pontificia Universidad Javeriana-Cali Grupo DESTINO Calle 18 No 118-250 Cali Colombia Université Laval Computer Vision and Systems Laboratory Québec City QC G1K7P4 Canada Department of Science and Engineering of Computing Colombia

ISBN: (纸本)9780819475657

The modified DAC version with thermal quadrupoles can be considered an interesting alternative to thermal contrast computations since it provides an automated tool for depth retrieval and eliminates the need of selecting a non-defective area. In practice it is important to have heat stimulus with complex shapes and long durations (several seconds) in order to cover larger inspection areas, enhance thermal contrast between defective and sound areas and increase the depth of inspection inside the material. In this work we present a heat stimulus correction by using the thermal quadrupoles theory and its validation with several heat stimulus shapes and durations. © 2009 SPIE.

关键词： Nondestructive examination

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Emotion classification based on gamma-band EEG

Emotion classification based on gamma-band EEG

引用

Annual International Conference of the IEEE engineering in Medicine and Biology Society (EMBC)

作者： Mu Li Bao-Liang Lu Department of Computer Science and Engineering MOE-Microsoft Key Laboratory of Intelligent Computing and Intelligent Systems Shanghai JiaoTong University Shanghai China

In this paper, we use EEG signals to classify two emotions-happiness and sadness. These emotions are evoked by showing subjects pictures of smile and cry facial expressions. We propose a frequency band searching method to choose an optimal band into which the recorded EEG signal is filtered. We use common spatial patterns (CSP) and linear-SVM to classify these two emotions. To investigate the time resolution of classification, we explore two kinds of trials with lengths of 3s and 1s. Classification accuracies of 93.5% plusmn 6.7% and 93.0%plusmn6.2% are achieved on 10 subjects for 3s-trials and 1s-trials, respectively. Our experimental results indicate that the gamma band (roughly 30-100 Hz) is suitable for EEG-based emotion classification.

关键词： Electroencephalography Frequency Neuroscience Psychology Humans Computer displays Emotion recognition USA Councils Spatial resolution Signal resolution

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Abstraction Strategy of Software Knowledge Reuse for Adaptable Knowledge and Information systems

Abstraction Strategy of Software Knowledge Reuse for Adaptab...

引用

International Conference on Information and Multimedia Technology (ICIMT)

作者： Yinglin Wang Department of Computer Science and Engineering MOE-Microsoft Key Laboratory for Intelligent Computing and Intelligent Systems Shanghai Jiaotong University Shanghai China

Nowadays enterprise information and knowledge systems provide technical platforms for the integration and collaboration of business processes among multi-organizations of enterprises. However, software systems supporting enterprise business processes are hard to be adapted and deployed to satisfy the ever-changing requirements of enterprises. In this paper we put forward an adaptable enterprise information system framework in which we use four levels of abstractions. At the meta-meta model level, the ontology schema is used which provides the specification language for other more specific levels. At the meta-model level, the extended OSM model is used, and the generic elements obtained from analyzing the commonality of requirements are included. At the model level, the commonalities of sub-domains, such as the patterns of tasks in a specific domain are analyzed and generalized for future reuse. The intermediate specifications of the business processes and work flows are used in this level. At the application level, specific elements and requirements of the applications will be added and customized via the tools developed at the abstracted levels. A case study of knowledge management system based on this four level abstraction is discussed.

关键词： Information systems Knowledge management Management information systems Ontologies Enterprise resource planning ISO standards Online Communities/Technical Collaboration Information management Multimedia systems Computer science

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Towards creative design using collaborative interactive genetic algorithms

Towards creative design using collaborative interactive gene...

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Congress on Evolutionary Computation

作者： Juan C. Quiroz Sushil J. Louis Amit Banerjee Sergiu M. Dascalu Evolutionary Computing Systems Laboratory Department of Computer Science & Engineering University of Nevada Reno NV USA School of Science Engineering and Technology Pennsylvania State University Harrisburg PA USA

We present a computational model of creative design based on collaborative interactive genetic algorithms. We test our model on floorplanning. We guide the evolution of floorplans based on subjective and objective criteria. The subjective criteria consists of designers picking the floorplan they like the best from a population of floorplans, and the objective criteria consists of coded architectural guidelines. We support collaboration by allowing individual designers to view each others' designs during the evolutionary process and the sharing of designs via case injection. This methodology supports team design, and reflects the view of creativity that collaboration accounts for much of our intelligence and creativity. We present a description of the model and a comparative study of floorplans created individually versus collaboratively. Our results show that floorplans created collaboratively were considered to be more ldquorevolutionaryrdquo and ldquooriginalrdquo than those created individually.

关键词： Algorithm design and analysis Collaboration Genetic algorithms Computational modeling Collaborative work Space exploration Design methodology Process design Computer science Testing

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