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Symposia and Workshops on Ubiquitous, Autonomic and Trusted Computing, UIC-ATC

作者： Aravind Kota Gopalakrishna Tanir Özçelebi Antonio Liotta Johan J. Lukkien System Architecture and Networking (SAN) Department of Mathematics and Computer Science Eindhoven University of Technology The Netherlands Electro-Optical Communications Department of Electrical Engineering Eindhoven University of Technology The Netherlands

The concept of intelligent lighting facilitates the use of machine learning models to adapt the lighting application behavior based on changing context. Ideally, a complete dataset without missing values is used to train the learning algorithm. Nevertheless, it is common to have missing data values in the dataset, e.g. due to lack of rich enough user interfaces such as smart phones. In this paper, we study various probabilistic approaches to treat missing feature values in a dataset collected from an office breakout area. This dataset is used to train the learning model to provide intelligent lighting solutions. We evaluate the performance of five different approaches by simulation, using four rule-based classification algorithms and various proportions of missing data. We find that none of these approaches gives best performance over the necessary range of conditions, and that an adaptive strategy is more suited.

关键词： Lighting Probabilistic logic Training Data models Computational modeling Adaptation models Smart phones

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A Model Analyzing Method for OWL-S Services Composition Based on High Level Petri Net

A Model Analyzing Method for OWL-S Services Composition Base...

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International Symposium on Knowledge Acquisition and Modeling, KAM

作者： Shaoran Dong Zengzhi Li State key Laboratory of Networking and Switching Technology Beijing University of Posts and Telecommunications Beijing China Institute of Computer System Architecture and Network Xi''an Jiaotong University Xi'an China

To analyze model of Web services composition, firstly analyze and abstract dataflow and control construct in OWL-S process to build high level Petri net model, then describe Petri net in Poses++ language, at last simulate Petri net with Poses++ to check data type and deadlock and calculate service performance. The experiment shows that this model analyzing method is able to accomplish type checking and deadlock and performance analyzing.

关键词： Performance analysis Web services system recovery Data analysis Petri nets Ontologies OWL Analytical models Knowledge acquisition Computer networks

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Particle Swarm Algorithm for the Quality of Service-Oriented Web Services Selection

Particle Swarm Algorithm for the Quality of Service-Oriented...

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International Symposium on Knowledge Acquisition and Modeling, KAM

作者： Hong Xia Zengzhi Li State key Laboratory of Networking and Switch Technology Beijing University of Posts and Telecommunications Beijing China Institute of Computer System Architecture and Network Xi''an Jiaotong University Xi'an Shaanxi China

Existing Web services composition technology, lack of services selecting. A particle swarm optimization algorithm based on the multi-objective optimization strategies was provided to address quality of services to choose the issue of global optimization. It is to transform Web services select the overall optimization problem with QoS into a multi-objective constrained optimization problem based on Qos, using multi-objective PSO intelligent theory, by a number of Qos parameters optimized at the same time, and ultimately produce a set of constraints to meet the Pareto optimal solution. The experimental results show the feasibility and efficiency of the algorithm.

关键词： Particle swarm optimization Web services Quality of service Constraint optimization Pareto optimization Service oriented architecture Switches Constraint theory Logic Optimization methods

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SDN-based optimization model of virtual machine live migration over layer 2 networks 2nd

SDN-based optimization model of virtual machine live migrati...

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2nd International Conference on Computer, Communication and Computational Sciences, IC4S 2017

作者： Cui, Hongyan Zhang, Bo Chen, Yuyang Yu, Tao Xia, Zongguo Liu, Yunjie State Key Laboratory of Networking and Switching Technology Beijing University of Posts and Telecommunications Beijing100876 China Beijing Laboratory of Advanced Information Networks Beijing China Key Laboratory of Network System Architecture and Convergence Beijing China Institute of Network Science and Cyberspace Tsinghua University Tsinghua China School Official University of Massachusetts Boston Boston United States

ISBN: (纸本)9789811303432

Virtualization can provide significant benefits for service user by cutting the cost as well as enabling easy access. However, because the MAC table capacity of each host is limited, the traditional layer 2 networks have been unable to meet the needs of the numbers of virtual machines in the center. VXLAN has become an important layer 2 over layer 3 network transmission tunneling technology, a good solution to the data center internal virtual machine isolation and cross-data center transmission problems, but VXLAN does not propose a complete solution for virtual machine migration in the data center. Therefore, we design and implement the network model based on SDN, which optimizes the current VXLAN technology. This model separates the network plane from migration control plane, which can simplify the process of VXLAN and the complex network in data center. Moreover, we propose a detailed process for virtual machine migration supported by OpenFlow protocol. Some design in our model can really reduce the complexity of VXLAN technology and make it convenient for the users of virtual machine. © Springer Nature Singapore Pte Ltd. 2019.

关键词： Virtual machine

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A Distributed Supervisor Synthesis Approach Based on Weak Bisimulation

A Distributed Supervisor Synthesis Approach Based on Weak Bi...

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International Workshop on Discrete Event systems, WODES

作者： Rong Su J.G. Thistle System Architecture and Networking Group (SAN) in Department of Mathematics and Computer Science Eindhovan University of Technology Eindhoven Netherlands Department of Electrical and Computer Engineering University of Waterloo Waterloo ONT Canada

It is well known that space and time complexity is one of the main bottlenecks of supervisor synthesis. The model of a large system is usually too big to be explicitly expressed, owing to composition of local components' models, making supervisor synthesis difficult, if still possible. In this paper, we propose a distributed supervisor synthesis approach, where instead of computing a model of the entire system, a local abstraction of the system with respect to each local component is computed based on weak bisimulation. Then a local supervisor for each component is computed based on the component model and the abstract system model, by using well developed centralized supervisor synthesis approaches. The collection of all resulting local supervisors forms a distributed supervisor

关键词： Distributed computing Control system synthesis Automata Centralized control Control theory Computational complexity Encoding Data structures Boolean functions Network synthesis

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Verification Web Services Composition Based on OWL-S

Verification Web Services Composition Based on OWL-S

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International Symposium on Knowledge Acquisition and Modeling, KAM

In order to ensure the correctness and reliability of Web services composition based on OWL-S, verify the interaction protocol of Web services. It is provided that three lay architecture. Composition service based on OWL-S, GA model is the middle model and the Promela model is the verification model, SPIN as a model validator. The OWL-S composition Web services transform a top-down conversation protocol process into a GA model, use WAST tool into Promela model, the SPIN tool analysis and verification structure and performance of composition services. This method is flexibility and scalability which provide a solution for Web services composition model verification.

关键词： Web services XML Protocols State-space methods Scalability Service oriented architecture Computer architecture Switches Automata Asynchronous communication

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Breakout 404: A smart space implementation for lighting services in the office domain

Breakout 404: A smart space implementation for lighting serv...

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International Conference on Networked Sensing systems (INSS)

作者： Serge Offermans Aravind Kota Gopalakrishna Harm van Essen Tanir Özçelebi Intelligent Lighting Institute (ILI) Department of Industrial Design Eindhovan University of Technology Netherlands System Architecture and Networking (SAN) Department of Mathematics and Computer Science Eindhovan University of Technology Netherlands

Smart spaces provide enhanced user experience through sensing and adaptation to changing context. Hence, they allow distributed applications to show intelligent, autonomous and interactive behavior. Two important research topics within this field are machine learning and human-system interaction. This paper introduces a pilot smart space implementation on top of a Wireless Sensor and Actuator Network (WSAN) infrastructure that is specifically intended to investigate these two aspects. We investigate a scenario built around an office breakout area context. We describe the infrastructure setup, the novel user interfaces, the network architecture and the message exchange policies of the pilot implementation. We employ the opportunities of modern lighting systems in the proposed implementation.

关键词： Lighting Machine learning Wireless sensor networks Atmosphere Wireless communication Context Actuators

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A real-time large-volume content delivery system using globally distributed storage

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Journal of the National Institute of Information and Communications Technology 2015年第2期62卷 101-111页

作者： Ogura, Tsuyoshi Kaneko, Kunitake Kitamura, Masahiko Kimiyama, Hiroyuki Fujii, Tatsuya Takahara, Atsushi Media Processing Systems Research Group Media Innovation Laboratory NTT Network Innovation Laboratories Japan Faculty of Science and Technology Keio University Application Oriented Networking Network Architecture Japan NTT Network Innovation Laboratories Network Virutalizations System Design Method Resillient System Japan

We are studying the method of developing a platform that delivers large-volume contents efficiently in a many-to-one transmission style, by combining network virtualization technology and the handling of LDGM error correction code. This paper describes its key technologies such as packet routing by using multiple virtual networks, data transmission using redundancy coding, and evaluation of communication qualities, and shows their current outcomes.

关键词： Error correction

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Streaming media traffic characterizations analysis in mobile Internet

Streaming media traffic characterizations analysis in mobile...

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International Symposium on Wireless Personal Multimedia Communications (WPMC)

作者： Hongyan Cui Jia Wang Fangfang Sun Yunjie Liu Kwang-Cheng Chen Key Lab. of network system architecture and convergence Beijing University of Posts and Telecommunications State Key Lab. of Networking and Switching Technology Department of Electrical Engineering National Taiwan University

ISBN: (纸本)9781479964123

In spite of great efforts to expand the network infrastructure, it is still hard to catch the rapid growing need to serve tremendous subscribers with significant traffic. To effectively allocate the resource among mobile telecommunication operators and Internet Service Providers (ISP), grasping the highly dynamic traffic patterns can enable effective network planning and optimization for state-of-the-art mobile Internet. We employ traffic behavior analysis method to analyze and model the Internet traffic. Due to the subscribers' number of streaming media accounting over 60% of the entire traffic, we conduct a complete study to analyze this kind of traffic. By contrast, we also give the analysis result of another application, Instant Message (IM). Applying our newly proposed clustering methodology, we describe the regional characteristic of applications. This research subsequently enables more subtle and efficient mobile Internet operating modes to benefit operators and ISPs.

关键词： Streaming media IP networks Mobile communication Internet Cities and towns Servers Wireless communication

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Research on WiFi User Dwell Time Distribution

Research on WiFi User Dwell Time Distribution

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Symposia and Workshops on Ubiquitous, Autonomic and Trusted Computing, UIC-ATC

作者： Jie Meng Yihong Hu Guochu Shou Zhigang Guo Junfei Huang Beijing Key Laboratory of Network System Architecture and Convergence Beijing University of Posts and Teleconnnunications Beijing China State Key Laboratory of Networking and Switching Technology Beijing University of Posts and Teleconnnunications Beijing China

ISBN: (纸本)9781467372121

In order to study the distribution law of human mobility time attribute and identify the individual identity according to the law, six months real data is collected in different scenarios through the Wireless-Data-Collection-Analysis-system developed by our laboratory. On the basis of AIC, we analyze the time distribution from the perspectives of wireless hotspot group users and individual users respectively. From the perspective of the group users, we verify that the users' daily cumulative dwell time meets the power-law distribution model. According to each user's average daily dwell time, we analyze the probability distribution of the average daily dwell time and conclude that it is consistent with the power-law with exponential cut off. From the angle of an individual user, we analyze the distribution of its daily dwell time in different time sections. The result shows that the daily dwell time probability distribution of the users who work on time is consistent with the multi-peak Gaussian distribution, and the moment of the highest peak point of different individuals are close. However, the distribution of the daily dwell time for those who do not need to work on time is related to the average daily dwell time. The shorter the average daily dwell time is, the better the distribution is in line with the long-tailed distribution.

关键词： Mobile communication Mathematical model Wireless communication Exponential distribution IEEE 802.11 Standard Mobile handsets Data models

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