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中国物理学会2013年秋季学术会议

作者： Qing-He Zhang Bei-Chen Zhang Michael Lockwood Jφran Moen J.Michael Ruohoniemi Evan G.Thomas Shun-Rong Zhang Rui-Yuan Liu Mark Lester Shandong Provincial Key Laboratory of Optical Astronomy and Solar-Terrestrial Environment School of Space Science and Physics Shandong University at Weihai Shandong China SOA Key Laboratory for Polar Science Polar Research Institute of China Shanghai China SOA Key Laboratory for Polar Science Polar Research Institute of China Shanghai China Department of Meteorology University of Reading Earley Gate P.O. Box 243 RG6 6BB UK Department of Physics University of Oslo Blindern Oslo Norway Bradley Department of Electrical & Computer Engineering Virginia Tech Blacksburg VA USA MIT Haystack Observatory Westford MA 01886 USA Department of physics and Astronomy University of Leicester Leicester UK

关键词： Polar Ionoshpere polar cap patches “tongue” of ionization (TOI) magnetic reconnection

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Studies on the Formation and Evolution of Polar Cap Ionization Patches

Studies on the Formation and Evolution of Polar Cap Ionizati...

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第三届全球华人空间/太空天气科学大会

作者： Qing-He Zhang Bei-Chen Zhang Michael Lockwood Jran Moen J.Michael Ruohoniemi Evan G.Thomas Shun-Rong Zhang Rui-Yuan Liu Mark Lester School of Space Science and Physics Shandong University at Weihai SOA Key Laboratory for Polar Science Polar Research Institute of China Department of Meteorology University of Reading Earley Gate P.O. Box 243 RG6 6BB UK Department of Physics University of Oslo Blindern Oslo Norway Bradley Department of Electrical & Computer Engineering Virginia Tech Blacksburg VA USA MIT Haystack Observatory Westford MA 01886 USA Department of physics and Astronomy University of Leicester Leicester UK

Session:空间天气科学前沿-电离层Type of presentation:口头报告Key word:Patches of ionization are common in the polar ionosphere where their motion and associ-ated density gradients give variable disturbances to High Frequency(HF)radio communic-ations,over-the-horizon radar location errors,and disruption and errors to satellite naviga-tion and *** formation and evolution

关键词： Studies on the Formation and Evolution of Polar Cap Ionization Patches

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MatchMaker: A friend recommendation system through TV character matching

MatchMaker: A friend recommendation system through TV charac...

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2012 IEEE Consumer Communications and Networking Conference, CCNC'2012

作者： Li, Bian Holtzman, Henry Huynh, Tuan Montpetit, Marie-Jose Media Laboratory Massachusetts Institute of Technology Cambridge MA United States Electrical Engineering and Computer Science Department Research Laboratory of Electronics Massachusetts Institute of Technology Cambridge MA United States

ISBN: (纸本)9781457720710

MatchMaker is an automated collaborative filtering system that recommends friends to people on Facebook by analyzing and matching people's online profile with the profiles of TV characters. The goal of MatchMaker is to produce friend recommendations with rich contextual information through collaborative filtering in the existing social network. Using relationships in TV programs as a parallel comparison matrix, MatchMaker projects these relationships into reality to help people find friends whose personality and characteristics have been voted to suit them well by their social network. MatchMaker also encourages more TV content viewing by using the social network context and connections to provoke people's curiosity of TV characters whom they have been matched with in their social network. © 2012 IEEE.

关键词： Collaborative filtering

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Learning visual saliency based on object's relative relationship

Learning visual saliency based on object's relative relation...

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19th International Conference on Neural Information Processing, ICONIP 2012

作者： Wang, Senlin Zhao, Qi Song, Mingli Bu, Jiajun Chen, Chun Tao, Dacheng Zhejiang Provincial Key Laboratory of Service Robot College of Computer Science Zhejiang University Hangzhou 310027 China Department of Electrical and Computer Engineering NUS Singapore Centre for Quantum Computation and Information Systems UTS Australia

ISBN: (纸本)9783642344992

As a challenging issue in both computer vision and psychological research, visual attention has arouse a wide range of discussions and studies in recent years. However, conventional computational models mainly focus on low-level information, while high-level information and their interrelationship are ignored. In this paper, we stress the issue of relative relationship between high-level information, and a saliency model based on low-level and high-level analysis is also proposed. Firstly, more than 50 categories of objects are selected from nearly 800 images in MIT data set[1], and concrete quantitative relationship is learned based on detail analysis and computation. Secondly, using the least square regression with constraints method, we demonstrate an optimal saliency model to produce saliency maps. Experimental results indicate that our model outperforms several state-of-art methods and produces better matching to human eye-tracking data. © 2012 Springer-Verlag.

关键词： Eye tracking

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Editorial

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International Journal of Bio-Inspired Computation 2013年第4期5卷 197-198页

作者： Camacho, David Badica, Costin Bein, Doina Warnier, Martijn Computer Science Department Escuela Politecnica Superior Universidad Autonoma de Madrid C/Francisco Tomás y Valiente 28049 Madrid Spain Software Engineering Department Faculty of Automatics Computers and Electronics University of Craiova Bvd. Decebal 107 200440 Craiova Romania Applied Research Laboratory Information Science and Technology Division Pennsylvania State University 204 V Applied Science Building University Park PA 16802 United States Systems Engineering Section Faculty of Technology Policy and Management Delft University of Technology Jaffalaan 5 2628BX Delft Netherlands

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Finding nuggets in IP portfolios: Core patent mining through textual temporal analysis 12

Finding nuggets in IP portfolios: Core patent mining through...

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21st ACM International Conference on Information and Knowledge Management, CIKM 2012

作者： Hu, Po Huang, Minlie Xu, Peng Li, Weichang Usadi, Adam K. Zhu, Xiaoyan State Key Laboratory on Intelligent Technology and Systems Department of Computer Science and Technology Tsinghua University Beijing 100084 China Department of Computer Science and Technology Tsinghua University Beijing 100084 China ExxonMobil Research and Engineering Company Annandale NJ United States

ISBN: (纸本)9781450311564

Patents are critical for a company to protect its core technologies. Effective patent mining in massive patent databases can provide companies with valuable insights to develop strategies for IP management and marketing. In this paper, we study a novel patent mining problem of automatically discovering core patents (i.e., patents with high novelty and influence in a domain). We address the unique patent vocabulary usage problem, which is not considered in traditional word-based statistical methods, and propose a topic-based temporal mining approach to quantify a patent's novelty and influence. Comprehensive experimental results on real-world patent portfolios show the effectiveness of our method. © 2012 ACM.

关键词： Data mining

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Stepping towards noiseless Linux environment

Stepping towards noiseless Linux environment

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2nd International Workshop on Runtime and Operating systems for Supercomputers, ROSS 2012 - In Conjunction with: ICS 2012

作者： Akkan, Hakan Lang, Michael Liebrock, Lorie M. Ultrascale Systems Research Center New Mexico Consortium United States Ultrascale Systems Research Center Los Alamos National Laboratory United States Department of Computer Science and Engineering New Mexico Institute of Mining and Technology United States

ISBN: (纸本)9781450314602

Scientific applications are interrupted by the operating system far too often. Historically operating systems have been written efficiently to time-share a single resource, the CPU. We now have an abundance of cores but we are still swapping out the application to run other tasks and therefore increasing the application's time to solution. Current task scheduling in Linux is not tuned for a high performance computing environment, where a single job is running on all available cores. For example, checking for context switches hundreds of times per second is counter-productive in this setting. One solution to this problem is to partition the cores between operating system and application;with the advent of many-core processors this approach is more attractive. This work describes our investigation of isolation of application processes from the operating system using a soft-partitioning scheme. We use increasingly invasive approaches;from configuration changes with available Linux features such as control groups and pinning interrupts using the CPU affinity settings, to invasive source level code changes to try to reduce, or in some cases completely eliminate, application interruptions such as OS clock ticks and timers. Explained here are the measures that can be taken to reduce application interruption solely with compile and run time configurations in a recent unmodified Linux kernel. Although these measures have been available for a some time, to our knowledge, they have never been addressed in an HPC context. We then introduce our invasive method, where we remove the involuntary preemption induced by task scheduling. Our experiments show that parallel applications benefit from these modifications even at relatively small scales. At the modest scale of our testbed, we see a 1.72% improvement that should project into higher benefits at extreme scales. © 2012 ACM.

关键词： Linux

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Formation learning algorithms for mobile agents subject to 2-D dynamically changing topologies

Formation learning algorithms for mobile agents subject to 2...

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American Control Conference

作者： Deyuan Meng Yingmin Jia Junping Du Jun Zhang Wenling Li Seventh Research Division and the Department of Systems and Control Beihang University (BUAA) Beijing 100191 P. R. China Beijing Key Laboratory of Intelligent Telecommunications Software and Multimedia School of Computer Science and Technology Beijing University of Posts and Telecommunications Beijing 100876 P. R. China School of Electronic and Information Engineering Beihang University (BUAA) Beijing 100191 P. R. China

ISBN: (纸本)9781479901777

In this paper, we consider a two-dimensional (2-D) formation problem for multi-agent systems subject to switching topologies that dynamically change along both a finite time axis and an infinite iteration axis. We present a distributed iterative learning control (ILC) algorithm via the nearest neighbor rules. By employing the 2-D approach, we develop both the asymptotic and exponentially fast convergence of our formation ILC, which can be guaranteed by conditions in terms of the spectral radius and the matrix norms, respectively.

关键词： Multi-agent systems ILC switching topologies formation learning algorithms learning algorithms Multi-agent systems International Labour Conference Mobile agents spectral radius

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Direct Observations of the Evolution of Polar Cap Ionization Patches

Direct Observations of the Evolution of Polar Cap Ionization...

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中国空间科学学会空间物理学专业委员会第十五届全国日地空间物理学研讨会

作者： Qing-He Zhang Bei-Chen Zhang Michael Lockwood Hong-Qiao Hu Jφran Moen Qing-He Zhang Bei-Chen Zhang Michael Lockwood Hong-Qiao Hu Jφran Moen John M.Ruohoniemi Evan G.Thomas Shun-Rong Zhang Hui-Gen Yang Rui-Yuan Liu Kathryn A.McWilliams Joseph.B.H.Baker SOA Key Laboratory for Polar Science Polar Research Institute of China Department of Meteorology University of ReadingEarley GateP.O.Box 243RG6 6BBUK Department of Physics University of OsloBlindernOsloNorway Bradley Department of Electrical & Computer Engineering Virginia TechBlacksburgVirginiaUSA MIT Haystack Observatory WestfordMA 01886USA Institute of Space and Atmospheric Studies University of SaskatchewanSaskatoonSaskatchewanCanada

Patches of ionization are common in the polar ionosphere where their motion and associated density gradients give variable disturbances to High Frequency(HF)radio communications,over-the-horizon radar location errors,and disruption and errors to satellite navigation and *** formation and evolution are poorly understood,particularly under disturbed space weather *** report direct observations of the full evolution of patches during a geomagnetic storm,including formation,polar cap entry,transpolar evolution,polar cap exit,and sunward return *** observations show that modulation of nightside reconnection in the substorm cycle of the magnetosphere helps form the gaps between patches where steady convection would give a"tongue"of ionization(TOI).

关键词： Direct Observations of the Evolution of Polar Cap Ionization Patches

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On the Performance Analysis of Energy Detection of Unknown Signals in Gamma Shadowed Ricean Fading Environments

On the Performance Analysis of Energy Detection of Unknown S...

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IEEE International Symposium on Personal, Indoor and Mobile Radio Communications

作者： Kostas P. Peppas George Efthymoglou Valentine A. Aalo Mohammed Alwakeel Sami Alwakeel Laboratory of Mobile Communications Institute of Informatics and Telecommunications National Centre for Scientific Research "Demokritos" Patriarhou Grigoriou & Neapoleos Agia Paraskevi 15310 Athens Greece Department of Digital Systems University of Piraeus 80 Karaoli & Dimitriou Street Piraeus 18534 Greece Department of Computer & Electrical Engineering and Computer Science Florida Atlantic University Boca Raton FL 33431 USA Sensor Networks and Cellular Systems (SNCS) Research Center University of Tabuk Tabuk Saudi Arabia

ISBN: (纸本)9781467362337

In this paper, we analyze the performance of an energy detector operating over Gamma shadowed Rice fading channels, namely Rice fading channels with the fluctuating line-of-sight components following the Gamma distribution. This composite multi-path/shadowing model has been shown to provide remarkably accurate fading characterization while leading to closed-form expressions for important channel statistics. For the considered system, we first derive analytical expressions for the average probability of detection, using either the probability density function method or the moments generating function method. The application of the former method, yields a rapidly convergent infinite series representation for the average probability of detection. The latter method is based on a contour integral representation for the Marcum Q-function. Finally, an infinite series representation for the area under the receiver operating characteristic curve is derived. Extensive numerically evaluated results, accompanied with Monte-Carlo simulations, are presented to corroborate the proposed analysis, for composite multi-path/shadowing scenarios of practical interest.

关键词： performance fluctuating proposed analysis

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