检索结果-内蒙古大学图书馆

3rd Workshop on Hyperspectral Image and Signal Processing: Evolution in Remote Sensing, WHISPERS 2011

作者： Villa, Alberto Li, Jun Plaza, Antonio Bioucas-Dias, Jose M. GIPSA-lab Signal and Image Dept. Grenoble Institute of Technology - INPG France Faculty of Electrical and Computer Engineering Iceland University of Iceland Iceland Instituto de Telecomunicações Instituto Superior Técnico TULisbon 1900-118 Lisboa Portugal Hyperspectral Computing Laboratory Department of Technology of Computers and Communications University of Extremadura E-10071 Caceres Spain

Spectral unmixing is a fast growing area in hyperspectral image analysis. Many algorithms have been recently developed to retrieve pure spectral components (endmembers) and determine their abundance fractions in mixed pixels, which dominate hyperspectral images. However, possible connections between spectral unmixing concepts and classification algorithms have been rarely investigated. In this work, we propose a new method to perform semi-supervised hyperspectral image classification exploiting the information retrieved with spectral unmixing. The proposed method integrates a well-established discriminative classifier (multinomial logistic regression) with linear spectral unmixing. Furthermore, the proposed method uses a new active sampling approach which takes into account spatial context when generating new samples. The proposed method is experimentally validated using both simulated and real hyperspectral data sets. © 2011 IEEE.

关键词： Classification (of information)

来源：评论

学校读者我要写书评

暂无评论

Hierarchically characterizing CUDA program behavior

Hierarchically characterizing CUDA program behavior

引用

IEEE International Workshop/Symposium on Workload Characterization

作者： Zhibin Yu Hai Jin Nilanjan Goswami Tao Li Lizy K. John Service Computing Technologies and System Lab/Cluster and Grid Computing Lab Huazhong University of Science and Technology Wuhan China Intelligent Design of Efficient Architecture Lab University of Florida Gainesville FL USA Department of Electrical and Computer Engineering University of Texas Austin Austin TX USA

CUDA has become a very popular programming paradigm in parallel computing area. However, very little work has been done for characterizing CUDA kernels. In this work, we measure the thread level performance, collect the basic block level characteristics, and glean the instruction level properties for about 35 programs from CUDA SDK, Parboil, and Rodinia benchmark suites. In addition, we define basic block vectors, synchronization vectors and thread similarity matrix to capture the characteristics of CUDA programs efficiently. We find that CUDA programs have some unique characteristics at each level compared to sequential programs.

关键词： Graphics processing unit Vectors Kernel Instruction sets Programming USA Councils Educational institutions

来源：评论

学校读者我要写书评

暂无评论

Looking around with your brain in a virtual world

Looking around with your brain in a virtual world

引用

IEEE Symposium on Computational Intelligence, Cognitive Algorithms, Mind, and Brain

作者： Bos, Danny Plass-Oude Duvinage, Matthieu Oktay, Oytun Saa, Jaime Delgado Guruler, Huseyin Istanbullu, Ayhan Van Vliet, Marijn Van De Laar, Bram Poel, Mannes Roijendijk, Linsey Tonin, Luca Bahramisharif, Ali Reuderink, Boris HMI Group Faculty of EEMCS University of Twente Netherlands TCTS Lab Electrical Engineering University Mons Belgium Electronics and Communications Corlu Engineering Namik Kemal University Turkey Faculty of Engineering and Natural Sciences VPA Lab Sabanci University Turkey IEE Group of Robotics and Intelligent Systems Universidad del Norte Colombia Department of Electronics and Computer Education Faculty of Technical Education Mugla University Turkey Faculty of Computer Engineering Balikesir University Turkey Radboud University Nijmegen Donders Institute for Brain Cognition and Behaviour Nijmegen Netherlands CNBI École Polytechnique Fédérale de Lausanne Switzerland Radboud University Nijmegen Institute for Computing and Information Sciences Nijmegen Netherlands

ISBN: (纸本)9781424498918

Offline analysis pipelines have been developed and evaluated for the detection of covert attention from electroen-cephalography recordings, and the detection of overt attention in terms of eye movement based on electrooculographic measurements. Some additional analysis were done in order to prepare the pipelines for use in a real-time system. This real-time system and a game application in which these pipelines are to be used were implemented. The game is set in a virtual environment where player is a wildlife photographer on an uninhabited island. Overt attention is used to adjust the angle of the first person camera, when the player is tracking animals. When making a photograph, the animal will flee when it notices it is looked at directly, so covert attention is required to get a good shot. Future work will entail user tests with this system to evaluate usability, user experience, and characteristics of the signals related to overt and covert attention when used in such an immersive environment. © 2011 IEEE.

关键词： Virtual reality

来源：评论

学校读者我要写书评

暂无评论

Passive black-box cryptanalysis of an ultralightweight protocol after eavesdropping one authentication session

引用

Cryptology and Information Security Series 2011年 6卷 3-17页

作者： Hernandez-Castro, Julio Cesar Peris-Lopez, Pedro Tapiador, Juan E. Phan, Raphael C.-W. Li, Tieyan School of Computing University of Portsmouth Buckingham Building Lion Terrace Portsmouth PO1 3HE United Kingdom Information Security and Privacy Lab Technical University Delft Netherlands Department of Computer Science University of York United Kingdom Department of Electronic and Electrical Engineering Loughborough University United Kingdom Institute for Infocomm Research ASTAR Singapore Singapore

ISBN: (纸本)9781607507215

We present a black-box attack that is able to fully recover the secret values shared between entities involved in an authentication protocol. First, we explain how this black-box technique can be successfully applied against the class of protocols commonly known as ultralightweight protocols. Then, the effectiveness of this attack is shown by successfully cryptanalyzing the David-Prasad ultralightweight protocol [1], which is one of the most recent proposals in this research area. We show how we can recover the secret static identifier ID - the most valuable information which the protocol is designed to conceal - after eavesdropping only one protocol session. Our attack compares favorably to previous attacks against this protocol, and constitutes an interesting alternative for the very realistic scenario of attackers having access only to messages exchanged during a single authentication session. We also show how this disclosure attack can be used to mount a very powerful traceability attack that also improves on previous results. © 2011 The authors and IOS Press. All rights reserved.

关键词： Cryptography

来源：评论

学校读者我要写书评

暂无评论

Investigating resilient high performance reconfigurable computing with minimally-invasive system monitoring

Investigating resilient high performance reconfigurable comp...

引用

2010 4th International Workshop on High-Performance Reconfigurable computing Technology and Applications, HPRCTA'10, Held in Conjunction with SC10

作者： Huang, Bin Schmidt, Andrew G. Mendon, Ashwin A. Sass, Ron Reconfigurable Computing Systems Lab. Department of Electrical and Computer Engineering University of North Carolina Charlotte NC United States

ISBN: (纸本)9781424495177

As researchers push for Exascale computing, one of the emerging challenges is system resilience. Unlike fault-tolerance which corrects errors, recent reports suggest that resilient systems will need to continue to make progress on an application despite faults. A first step in developing a resilient system is to have robust, scalable system monitoring. The work described here presents a novel, minimally-invasive system monitor that operates over a separate network. We analytically characterize the performance for an arbitrary set of nodes and demonstrate a working implementation of the design. We argue that the hardware approach is inherently superior to the ad hoc, software techniques currently employed in practice. © 2010 IEEE.

关键词： Fault tolerance

来源：评论

学校读者我要写书评

暂无评论

CantorSim: Simplifying acceleration of micro-architecture simulations

CantorSim: Simplifying acceleration of micro-architecture si...

引用

International Symposium on Modeling, Analysis and Simulation of computer and Telecommunication Systems

作者： Yu, Zhibin Jin, Hai Chen, Jian John, Lizy K. Service Computing Technology and System Lab Huazhong University of Science and Technology Wuhan 430074 China Department of Electrical and Computer Engineering University of Texas at Austin Austin TX 78712 United States

ISBN: (纸本)9780769541976

Many techniques have been developed to accelerate micro-architecture simulation since it is becoming increasingly urgent as the complexity of workloads and simulated processors increases. However, most of popular techniques need profiles or trial simulations to determine parameters before real simulations. When the number of dynamic instructions of workloads such as SPEC CPU2006 is huge, the profiles or trial simulations often take a long time. What's worse, any changes of benchmarks need to repeat the above work. This paper proposes a novel approach based on fractals to solve this problem. It employs the generation procedure of trisection Cantor Set, a classic fractal, to select instructions simulated in detail. We implement a simulator named CantorSim using the trisection Cantor fractal approach. The simulator is evaluated with benchmark programs from SPEC CPU2000 and SPEC CPU2006. We show that our approach is micro-architecture independent as the same parameter value for a single program yields similar results on processors with different configurations. The unified analytical model used to determine sampling parameters for different benchmarks indicates the proposed approach can save a lot of time for preparing parameters. On the other hand, for SPEC CPU2000 and SPEC CPU2006, CantorSim is slightly faster than SMARTSim. The validated average CPI relative errors of the SPEC CPU2000 and SPEC CPU2006 are 3.2% and 2.2% respectively. Therefore, our proposed approach can simplify acceleration of simulations significantly without sacrificing speed and accuracy. © 2010 IEEE.

关键词： computer architecture

来源：评论

学校读者我要写书评

暂无评论

Reports of the AAAI 2010 conference workshops

Reports of the AAAI 2010 conference workshops

引用

作者： Aha, David W. Boddy, Mark Bulitko, Vadim D'Avila Garcez, Artur S. Doshi, Prashant Edelkamp, Stefan Geib, Christopher Gmytrasiewicz, Piotr Goldman, Robert P. Halevy, Alon Hitzler, Pascal Isbell, Charles Josyula, Darsana Kaelbling, Leslie Pack Kersting, Kristian Kunda, Maithilee Lamb, Luis C. Marthi, Bhaskara McGreggor, Keith Mihalkova, Lilyana Nastase, Vivi Natarajan, Sriraam Provan, Gregory Raja, Anita Ram, Ashwin Riedl, Mark Russell, Stuart Sabharwal, Ashish Smaus, Jan-Georg Sukthankar, Gita Tuyls, Karl Van Der Meyden, Ron Adaptive Systems Section Naval Research Laboratory Washington DC United States Adventium Labs. Minneapolis MN United States Department of Computer Science University of Alberta Canada City University London United Kingdom University of Georgia United States University of Bremen Germany School of Informatics University of Edinburgh United Kingdom University of Illinois Chicago United States Smart Information Flow Technologies LLC Minneapolis MN United States Structured Data Group Google Research United States Department of Computer Science Wright State University Dayton OH United States School of Interactive Computing Georgia Institute of Technology Atlanta GA United States Department of Computer Science Bowie State University United States Department of Computer Science and Engineering Massachusetts Institute of Technology United States Statistical Relational Mining Group Fraunhofer IAIS Germany Department of Computer Science Federal University of Rio Grande Do sul Brazil Willow Garage Inc. CA United States Computer Science Department University of Maryland College Park United States Heidelberg Institute for Theoretical Studies Heidelberg Germany Department of Computer Science University of Wisconsin Madison United States University College Cork Ireland Cork Complex Systems Lab. Ireland Department of Software and Information Systems University of North Carolina Charlotte United States Department of Computer Science and Engineering University of California Berkeley United States Department of Computer Science Cornell University United States Institute for Computational Sustainability United States University of Freiburg Germany School of Electrical Engineering and Computer Science University of Central Florida United States Maastricht University Netherlands University of New South Wales NICTA Australia

The AAAI-10 workshop program was held on July 11-12, 2010, at the Westin Peachtree Plaza in Atlanta, Georgia. The workshop program included 13 workshops covering a wide range of topics in artificial intelligence. There were several presentations on particular formalisms for combining the levels of planning from the perspectives of classical planning, motion planning, POMDPs, search-based planning, and temporal logic-based constraints. Henry Lieberman from Massachusetts Institute of Technology Media laboratory presented work developing a platform for knowledge acquisition and usage from expert users, built upon experience with eliciting information from nonexperts in a collaborative manner. The objective of the AAAI Workshop on Goal-Directed Autonomy (GDA) was to encourage discussion and novel contributions on intelligent agents that can self-select their goals. Jeremy Baxter from QinetiQ focused on user interaction, while Nick Hawes described a goal-directed reasoning framework for controlling a mobile robot.

关键词： Motion planning

来源：评论

学校读者我要写书评

暂无评论

Rapid radio: A framework for human-assisted signal classification and receiver implementation

Rapid radio: A framework for human-assisted signal classific...

引用

IEEE National Conference on Aerospace and Electronics (NAECON)

作者： Jorge Surís Adolfo Recio Peter Athanas Configurable Computing Lab Bradley Department of Electrical and Computer Engineering Virginia Polytechnic Institute and State University Blacksburg VA USA

ISBN: (纸本)9781424444946

An analysis-based framework for the rapid development of a radio receiver for signals with unknown parameters is pro-posed, exploiting the reconfiguration capabilities of FPGAs. The framework guides a non-expert user through the process of signal classification and FPGA-based receiver implementation. System efficiency is traded off with implementation time in order to allow fast radio creation. A set of high-level transformations are applied to the unknown signal based on different hypothesis about the modulation scheme. The results of the transformations are presented to the user, who can steer the process of analysis. The parameters of the radio are then mapped by means of an Implementation Engine to modules implemented in a general purpose FPGA-based receiver.

关键词： Pattern classification Receivers Signal analysis Field programmable gate arrays Signal design Prototypes Graphical user interfaces Engines Data mining Phase modulation

来源：评论

学校读者我要写书评

暂无评论

EW-PESQ: A quality assessment method for speech signals sampled at 48 kHz

引用

AES: Journal of the Audio engineering Society 2010年第4期58卷 251-268页

作者： Bispo, Bruno C. Esquef, Paulo A.A. Biscainho, Luiz W.P. De Lima, Amaro A. Freeland, Fabio P. De Jesus, Rafael A. Said, Amir Lee, Bowon Schafer, Ronald W. Kalker, Ton Department of Electrical and Computer Engineering University of Porto Porto Portugal Coordination of Systems and Control National Laboratory for Scientific Computing LNCC/MCT Petrópolis RJ Brazil LPS-PEE/COPPE Federal University of Rio de Janeiro Rio de Janeiro RJ Brazil Nova Iguaçu RJ Brazil Rio de Janeiro RJ Brazil PETROBRAS/E and P Rio de Janeiro RJ Brazil Multimedia Communications and Networking Lab Hewlett-Packard Laboratories Palo Alto CA United States

Extended models of the W-PESQ method are presented which are capable of assessing the subjective quality of noisy speech signals sampled at 48 kHz. Two methods are proposed: a version backward compatible with the W-PESQ standard, called EW-PESQ(E), and another, called EW-PESQ(R), in which the original psychoacoustic models are entirely replaced with alternative formulations available in the literature. Performance figures of both the EW-PESQ(E) and the EW-PESQ(R) in predicting the subjective quality of extrawide-band speech (sampled at 48 kHz) corrupted with broad-band and environmental noise are reported. In both cases the results obtained reveal a strong correlation (approximately 97%) with mean opinion scores.

关键词： Speech communication

来源：评论

学校读者我要写书评

暂无评论

A grid-based approach to formation reconfiguration in cluttered environments 10

A grid-based approach to formation reconfiguration in clutte...

引用

2009 10th European Control Conference, ECC 2009

作者： Miklic, Damjan Bogdan, Stjepan Fierro, Rafael Electrical and Computer Engineering Department University of New Mexico AlbuquerqueNM87131-0001 United States Faculty of Electrical Engineering and Computing University of Zagreb Zagreb10000 Croatia MARHES Lab Electrical and Computer Engineering Department University of New Mexico AlbuquerqueNM87131-0001 United States

ISBN: (纸本)9783952417393

In this paper, we propose an architecture for formation reconfiguration of a team of autonomous agents navigating within an obstacle-populated environment. Our approach is based on abstracting the agent formation by a rectangular grid. We develop a coordination strategy that ensures collision-free transitions between arbitrarily defined formations. This coordination strategy is based on a well-established control design methodology for manufacturing systems. Group navigation is achieved by integrating a waypoint planner with a novel grid-based formation reconfiguration controller. The proposed hybrid architecture is capable of driving a group of agents through a cluttered environment, while maintaining specified formation constraints. Simulation results verify the validity of our methodology. © 2009 EUCA.

关键词： Autonomous agents

来源：评论

学校读者我要写书评

暂无评论

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案：

请选择收藏分类：

通借通还

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：