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作者： Chang, Dongxia Zhao, Yao Zheng, Changwen Zhang, Xianda Institute of Information Science Beijing Jiaotong University Beijing Key Laboratory of Advanced Information Science and Network Technology Beijing 100044 China National Key Lab of Integrated Information System Technology Institute of Software Chinese Academy of Sciences Beijing 100080 China Tsinghua Department of Automation Tsinghua University Beijing 100084 China

In this paper, a genetic clustering algorithm is described that uses a new similarity measure based message passing between data points and the candidate centers described by the chromosome. In the new algorithm, a variable-length real-value chromosome representation and a set of problem-specific evolutionary operators are used. Therefore, the proposed GA with message-based similarity (GAMS) clustering algorithm is able to automatically evolve and find the optimal number of clusters as well as proper clusters of the data set. Effectiveness of GAMS clustering algorithm is demonstrated for both artificial and real-life data set. Experiment results demonstrated that the GAMS clustering algorithm has high performance, effectiveness and flexibility. © 2011 Elsevier Ltd. All rights reserved.

关键词： Clustering algorithms

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A high-speed real-time HTTP performance measurement architecture based on network processor

A high-speed real-time HTTP performance measurement architec...

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2011 International Conference on ICT Convergence, ICTC 2011

作者： Yang, Xin Chen, Xiaming Jin, Yaohui State Key Lab. of Advanced Optical Communication System and Network Shanghai Jiao Tong University Shanghai China

ISBN: (纸本)9781457712678

In this paper, we propose an architecture for highspeed real-time passive HTTP traffic performance measurement. High-speed real-time measurement is hard to realize due to the requirement of high capturing and processing power. We introduce network processor to solve this problem. Then we deploy the system at the Internet access link of a campus network, and demonstrate the processing capability and feasibility of this architecture through the measurement results. © 2011 IEEE.

关键词： HTTP

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Combining sFlow and tracker traffic analysis: A novel estimation approach for network-wide BitTorrent distribution

Combining sFlow and tracker traffic analysis: A novel estima...

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13th Asia-Pacific network Operations and Management Symposium: Managing Clouds, Smart networks and Services, APNOMS 2011

作者： Ye, Wei Luo, Xuan Xie, Rui Zhang, Haibin Jiang, Kaida Jin, Yaohui State Key Lab. of Advanced Optical Communication System and Network Shanghai Jiaotong University Shanghai China Network and Information Center Shanghai Jiaotong University Shanghai China

ISBN: (纸本)9781457716706

BitTorrent(BT) has emerged as one of the most popular protocols for content sharing in recent years. Most BT applications are network-oblivious which brings great challenges to traffic engineering. As basic input information, network-wide BT traffic distribution is of vital importance for service providers (SP) or carriers to enforce appropriate control policies. Direct online measurement of network-wide BT traffic faces scalability issue, for it requires deploying application identification deep packet inspection (DPI) device on every subject link. In this paper, we propose a novel approach to estimate network-wide BT traffic distribution through combining sFlow and Tracker traffic analysis. Owing to a noticeable increase of BT traffic using random port numbers, sFlow alone is no longer sufficient for BT recognition. We tackle this problem by combining sFlow with information collected from BT tracker's traffic. With assistance of this information, BT samples can be accurately distinguished from other sFlow samples. The efficacy of our approach is evaluated through experiments on backbone links of campus network. Evaluation results show that our approach can reach a high accuracy in network-wide BT traffic estimation. © 2011 IEEE.

关键词： Bandpass filters

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Dynamic scheduling for workflow applications over virtualized optical networks

Dynamic scheduling for workflow applications over virtualize...

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2011 IEEE Conference on Computer Communications Workshops, INFOCOM WKSHPS 2011

作者： Ding, Jingyu Wang, Yan Le, Jiajin Jin, Yaohui School of Computer Sci. Tech. Donghua Univ. China Huawei Technology China State Key Lab of Advanced Optical Communication System and Network Shanghai Jiao Tong University China

ISBN: (纸本)9781457702488

Joint scheduling of both computation and communication resources for workflow based distributed computing application over optical networks has been studied recently. Most algorithms proposed in previous work are mainly based on static scheduling strategies with assumption that detail resource information and accurate performance prediction is available. In this paper, we propose to employ shared virtualized optical network (VON) for the task scheduling problem. Both customers and carriers can benefit from such architecture with better flexibility and scalability. Based on a new Scheduled Result Graph (SRG) concept, we propose a computation and communication delay aware rescheduling (C2DAR) scheme to deal with the dynamics from shared VON resources. We evaluate the performance of dynamic scheduling scheme over shared VON in comparison to the static scheduling over dedicated VON and entire optical network respectively. Simulation results also show that C2DAR scheme outperforms traditional computation delay aware rescheduling (CDAR) scheme under shared VON scenario. © 2011 IEEE.

关键词： Scheduling algorithms

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ESICM LIVES 2016: part one Milan, Italy. 1-5 October 2016 Abstracts

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INTENSIVE CARE MEDICINE EXPERIMENTAL 2016年第SUPPL 1期4卷 1-1页

作者： [Anonymous] Academic Medical Center University of Amsterdam Amsterdam Netherlands UMCU Utrecht Netherlands Autonomous University of Barcelona Barcelona Spain Hospital São Francisco Xavier Lisbon Portugal CHU Henri Mondor Medical ICU Créteil France Université de Paris Est-Créteil Groupe de Recherche Clinique CARMAS Créteil France Hôpital Tenon APHP Medical and Surgical ICU Paris France Université Paris Diderot Sorbonne Paris Cité UMR 1153 Paris France Interdepartmental Division of Critical Care University of Toronto Toronto Canada University Health Network University of Toronto Critical Care Medicine Toronto Canada University of Milan - Bicocca Health Sciences School of Medicine and Surgery Monza Italy St Michael’s Hospital University of Toronto Anesthesia Toronto Canada CHU d’Angers Medical ICU Angers France Interdepartmental Division of Critical Care University of Toronto Saint Michael’s Hospital and Keenan Research Centre Toronto Canada University of Birmingham Institute for Inflammation and Ageing Birmingham UK University of Sheffield Mathematics and Statistics Help Centre Sheffield UK Heart of England NHS Foundation Trust Intensive Care Medicine Birmingham UK Department of Surgery University Hospitals Birmingham NHS Trust Birmingham UK University Hospitals Birmingham NHS Trust Anaesthesia and Critical Care Medicine Birmingham UK Queen’s University of Belfast Wellcome-Wolfson Institute for Experimental Medicine Belfast UK Royal Victoria Hospital Intensive Care Medicine Belfast UK University of Warwick Warwick Clinical Trials Unit Coventry UK University of Bari ‘Aldo Moro’ Bari Italy Hospital Israelita Albert Einstein São Paulo Brazil Mayo Clinic Jacksonville USA Mahidol University Faculty of Tropical Medicine Bangkok Thailand University Medical Center Utrecht Intensive Care Utrecht Netherlands University Medical Center Utrecht Julius Center for Health Sciences and Primary Care Utrecht Netherlands Academic Medical Center University of Amste

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A real-valued quantum genetic niching clustering algorithm and its application to color image segmentation

A real-valued quantum genetic niching clustering algorithm a...

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2011 IEEE International conference on Intelligent Computation and Bio-Medical Instrumentation, ICBMI 2011

作者： Chang, Dongxia Zhao, Yao Zheng, Changwen Institute of Information Science Beijing Jiaotong University Beijing Key Laboratory of Advanced Information Science and Network Technology Beijing 100044 China National Key Lab. of Integrated Information System Technology Institute of Software Chinese Academy of Sciences Beijing 100080 China

ISBN: (纸本)9780769546230

This paper proposes a novel genetic clustering algorithm, called a real-valued quantum genetic niching clustering algorithm (RQGN), which is based on the concept and principles of quantum computing, such as the qubits and superposition of states. Our algorithm can automatically clustering a data set into clusters without the need to know the number of clusters in advance. A dynamic identification of the niches is performed at each generation to automatically evolve the optimal number of clusters as well as the cluster centers of the data set. After getting the niches of the population, a Q-gate with adaptive selection of the angle for every niches is introduced as a variation operator to drive individuals toward better solutions. The experimental results show that RQGN algorithm has high performance, effectiveness and flexibility. © 2011 IEEE.

关键词： Clustering algorithms

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On the Feasibility of Reconfigurable Photonic network on Chip

On the Feasibility of Reconfigurable Photonic Network on Chi...

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Conference on Lasers and Electro-Optics/Pacific Rim, CLEOPR 2009

作者： Jin, Yaohui Tang, Jianxiong Chang, Zhijuan Gao, Yu Hu, Weisheng State Key Lab of Advanced Optical Communication System and Network Shanghai Jiao Tong university Shanghai 200240 China

Reconfigurable photonic network formulti-processor on chip communication is considered. Withdifferent application pattern, this architecture can significantlyimprove the latency performance of multi-processor chips. &... 详细信息

ISBN: (纸本)9781424438303

关键词： network-on-chip

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The design and implementation of distributed resource manager in optical grid networks

The design and implementation of distributed resource manage...

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2009 Asia Communications and Photonics Conference and Exhibition, ACP 2009

作者： Chen, Siwei Hu, Weisheng Guo, Wei Jin, Yaohui State Key Lab. of Advanced Optical Communication System and Network Shanghai Jiao Tong University Shanghai China

Effective management of large amount of heterogeneous resources in optical grid is critical to the performance of the grid. This article proposes a distributed system for an integrated management of both application a... 详细信息

ISBN: (纸本)9781557528773

关键词： Photonics

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Deflection routing in multi-channel photonic network on chip architecture

Deflection routing in multi-channel photonic network on chip...

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network Architectures, Management, and Applications VII

作者： Tang, Jianxiong Jin, Yaohui Chang, Zhijuan State Key Lab of Advanced Optical Communication System and Network Shanghai Jiao Tong University Shanghai 200240 China

ISBN: (纸本)9780819480354

Ultralow-latency and less power consumption have become necessary in multi-processor interconnection network on chip, photonic interconnection as a solution to meet above requirement, provides high performance interconnection on chip. But the photonic network on chip architecture design and performance is limited because photonic interconnection hasn't buffer, photonic network architecture must be designed to relieve this limitation. In this paper, we present a multi-channel photonic network on chip architecture employing deflection routing, optical data packets can inject/eject from processor core by four channels at the same time. Simulation result shows this network architecture has 60% latency decrease compared to generic photonic network on chip, and the photonic network architecture is only consume 7% power of the electronic interconnection network on chip with the same scale. © 2009 SPIE-OSA-IEEE.

关键词： network-on-chip

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Dynamic overlay routing based on active probing measurements: An emulation study

Dynamic overlay routing based on active probing measurements...

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network Architectures, Management, and Applications VII

作者： Zhang, Xinxin Ye, Wei Jin, Yaohui State Key Lab of Advanced Optical Communication System and Network Shanghai Jiao Tong Univ. Shanghai China

ISBN: (纸本)9780819480354

Recent studies have shown that path diversity provided by overlay networks brings about possibilities to choose alternate optimal path against default one. In the present paper, we present a novel routing mechanism which chooses path based on a composite metric, whose comprising individual metrics are determined by active probing measurements including delay, jitter and bandwidth on the overlay network in a real-time fashion. The applicability of this mechanism is examined under overlay emulation environment, which is supported by the performance data collected from a real enterprise overlay network. © 2009 SPIE-OSA-IEEE.

关键词： network routing

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