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3rd International Conference on Swarm Intelligence, ICSI 2012

作者： Zhu, Zexuan Shen, Linlin Sun, Yiwen He, Shan Ji, Zhen City Key Laboratory of Embedded System Design College of Computer Science and Software Engineering Shenzhen University Shenzhen 518060 China Shenzhen Key Lab. of Biomedical Engineering School of Medicine Shenzhen University 518060 China School of Computer Science University of Birmingham Edgbaston Birmingham B15 2TT United Kingdom

ISBN: (纸本)9783642309755

This paper proposes a three-dimensional Gabor feature extraction for pixel-based hyperspectral imagery classification using a memetic algorithm. The proposed algorithm named MGFE combines 3-D Gabor wavelet feature generation and feature selection together to capture the signal variances of hyperspectral imagery, thereby extracting the discriminative 3-D Gabor features for accurate classification. MGFE is characterized with a novel fitness evaluation function based on independent feature relevance and a pruning local search for eliminating redundant features. The experimental results on two real-world hyperspectral imagery datasets show that MGFE succeeds in obtaining significantly improved classification accuracy with parsimonious feature selection. © 2012 Springer-Verlag.

关键词： Feature Selection

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Energy and thermal aware mapping for mesh-based NoC architectures using multi-objective ant colony algorithm

Energy and thermal aware mapping for mesh-based NoC architec...

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IEEE International Conference on computer Research and Development

作者： Liu, Yanhua Ruan, Ying Lai, Zongsheng Jing, Weiping Dept. of Electronic Computer and Software Systems Institute of Microelectronics Circuit and System East China Normal University Shanghai China Dept. of Electronic Engineering Jiangsu Provincial Key Lab. of ASIC Design Nantong University Nantong China

ISBN: (纸本)9781612848372

Where IP cores to be mapped must be carefully solved for any given application in order to optimize different performance metrics in Network-on-Chip (NoC) design flow. The optimization of different performance metrics simultaneously may cause a negative effect on each other because of the strong correlation between these performance metrics. In this paper, we propose a multi-objective ant colony algorithm (MOACA) that maps IP cores onto mesh-based NoC architectures. This algorithm is an efficient way to find the pareto-optimal front which optimizes energy consumption and hotspot temperature of NoC. The algorithm has been implemented and evaluated for synthetic generated benchmarks. Experimental results confirm the efficiency, accuracy and scalab.lity of the algorithm. © 2011 IEEE.

关键词： Network-on-chip

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A novel clustering algorithm based on multi-sampling max-min distance and dynamic tunneling method

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Journal of Information and Computational Science 2009年第2期6卷 637-642页

作者： Lv, Jia Chongqing Key Lab. of Operations Research and System Engineering College of Mathematics and Computer Science Chongqing Normal University Chongqing 400047 China

In view of the limitations that k-means clustering algorithm is sensitive to the initial points and liable to fall into local minimum point, a clustering algorithm based on multi-sampling max-min distance and dynamic tunneling method is proposed. In this algorithm, max-min distance approach combined with multi-sampling technology is used to choose the starting cluster centers optimally, and dynamic tunneling method, whose feature is its ability to search global optimum solution, is applied to skip through local minima of objective function via drilling tunnel. It is proved validity and feasibility by experiment. Copyright ©2009 Binary Information Press.

关键词： Global optimization

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A differential public PUF design for lightweight authentication 16

A differential public PUF design for lightweight authenticat...

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2021 International Conference on Synthesis, Modeling, Analysis and Simulation Methods and Applications to Circuit Design, SMACD 2021 and 16th Conference on PhD Research in Microelectronics and Electronics, PRIME 2021

作者： Duan, Shengyu Sai, Gaole School of Computer Engineering and Science Shanghai University Shanghai200444 China State Key Laboratory of Computer Architecture Institute of Computing Technology Chinese Academy of Sciences China Guangdong Provincial Key Lab of Robotics and Intelligent System Shenzhen Institutes of Advanced Technology Chinese Academy of Sciences China CAS Key Laboratory of Human-Machine Intelligence-Synergy Systems Shenzhen Institutes of Advanced Technology China

ISBN: (纸本)9783800755899

Physical Unclonable Functions (PUFs) have emerged as a promising primitive to provide a hardware keyless security mechanism for integrated circuit applications. Public PUFs (PPUFs) address the crucial PUF vulnerability of requiring databases to store the secrete reference information. This paper investigates one of the PPUF families, differential PPUF (dPPUF), which exploits complexly interacted logic to create time gap between actual execution and simulation, and to prevent simulation attacks. Conventional dPPUFs have high costs. We observe the repressers have large impact on simulation time, but take a great proportion in current dPPUF structure. We thereby present a represser network with specially designed interconnection and shared logic, to maintain a high circuit complexity and to reduce the area cost. We show the proposed dPPUF has similar resilience over simulation attacks as the conventional design. Area cost can be reduced by up to 44%, and thus the proposed design can be used for lightweight authentication. © VDE VERLAG GMBH.

关键词： Authentication

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Anomaly Detection for User Behavior in Wireless Network Based on Cross Entropy

Anomaly Detection for User Behavior in Wireless Network Base...

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

作者： Chunxiao Zhang Yihong Hu Xinning Zhu Zhigang Guo Junfei Huang Beijing Key Lab. of Network System Architecture and Convergence Beijing University of Posts and Telecommunications Beijing China State Key Lab. of Networking and Switching Technology Beijing University of Posts and Telecommunications Beijing China

ISBN: (纸本)9781467372121

Wi-Fi technology is becoming more and more popular and anomaly detection for user behavior is much required in many fields such as public security, therefore anomaly detection for offline user behavior based on Wi-Fi is attracting many researchers' attention. There are already some researches in anomaly detection focusing on single user behavior, while the distribution of group user behaviors is considered in this paper. A novel method using cross entropy model which is usually used for networking attacking in computer network is proposed to detect anomalies of offline user behavior in wireless network. Moreover, to make the anomaly detection availab.e in different scenes, cross entropy model is optimized by using membership function of fuzzy mathematic. Experiments conducted in campus, hotel and office satisfy the expected results, which verify the feasibility and efficiency. And the result retrieved from optimized model is better than that of original model.

关键词： Entropy Hidden Markov models Mathematical model Analytical models Mobile communication IEEE 802.11 Standard Computational modeling

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Research of deep packet inspection system based on the MapReduce

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Journal of Computational Information systems 2013年第7期9卷 2587-2594页

作者： Wang, Jinsong Wei, Jun Lin, Sheng Huang, Wei Tianjin Key Lab. of Intelligent Computing and Novel Software Technology Tianjin University of Technology Tianjin 300384 China Key Laboratory of Computer Vision and System Ministry of Education Tianjin University of Technology Tianjin 300384 China

In this paper, we propose a deep packet inspection system based on the MapReduce. The MapReduce which is a parallel distributed programming model developed by Google applies the technology of deep packet inspection. Network protocol analysis technique is invoked to realize detect, effectively reducing the packet number to be matched. Furthermore, cache technology is adopted to store attack signature from database in order to reduce the frequency of reading the rules from library file which improved the detection efficiency. Experimental results show that effectiveness of the proposed system with the high-speed network traffic. Copyright © 2013 Binary Information Press.

关键词： MapReduce

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Construct pairwise test suites based on the Bak-Sneppen model of biological evolution

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World Academy of Science, Engineering and Technology 2009年 35卷 224-229页

作者： Yuan, Jianjun Jiang, Changjun Department of Computer Science and Technology The Key Lab. of 'Embedded System and Service Computing' Ministry of Education of China Tongji University Shanghai 201804 China

Pairwise testing, which requires that every combination of valid values of each pair of system factors be covered by at lease one test case, plays an important role in software testing since many faults are caused by unexpected 2-way interactions among system factors. Although meta-heuristic strategies like simulated annealing can generally discover smaller pairwise test suite, they may cost more time to perform search, compared with greedy algorithms. We propose a new method, improved Extremal Optimization (EO) based on the Bak-Sneppen (BS) model of biological evolution, for constructing pairwise test suites and define fitness function according to the requirement of improved EO. Experimental results show that improved EO gives similar size of resulting pairwise test suite and yields an 85% reduction in solution time over SA.

关键词： Simulated annealing

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A watermark-aware trusted running environment for software clouds

A watermark-aware trusted running environment for software c...

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5th Annual ChinaGrid Conference, ChinaGrid 2010

作者： Fu, Junning Wang, Chaokun Yu, Zhiwei Wang, Jianmin Sun, Jia-Guang School of Software Tsinghua University Beijing 100084 China Tsinghua University Key Lab. for Information System Security School of Software TNLIST Beijing 100084 China Dept. of Computer Sci. and Tech. Tsinghua University Beijing 100084 China

ISBN: (纸本)9780769541068

A software cloud is ready-made for software delivery or Software as a Service (SaaS). As it becomes more and more popular, security problems of software running in the cloud also become an important issue. The threats, such as destroying system softwares and access violation, are frequently emerging in the field of software cloud. In this paper, we propose a watermark-aware trusted running environment to protect the softwares running in the cloud. We implement the scheme which mainly contains two parts: 1) embedding watermark into the Java programs running in the cloud;2) generating customized JVMs for recognizing the watermarked programs. Experimental results within a real private software cloud to demonstrate that our approach can provide a largescale protection with a small overhead. © 2010 IEEE.

关键词： computer software

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Improved continuation power flow method for AC/DC power system

Improved continuation power flow method for AC/DC power syst...

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2011 IEEE Electrical Power and Energy Conference, EPEC 2011

作者： Liu, Chongru Bose, Anjan Han, Minxiao Chen, Xiuyu School of Electrical and Electronic Engineering North China Electric Power University Beijing China State Key Lab. of Power System Tsinghua University Beijing China School of Electrical Engineering and Computer Science Washington State University Pullman WA United States

ISBN: (纸本)9781457704048

An improved continuation power flow method for the AC/DC system is proposed in this paper. The three level control strategies and the coordination of the control modes for DC systems are presented. Firstly, the load-type continuation power flow is introduced in brief. Secondly, the concept of the three-level control and their coordination are proposed. The reactive power control strategy is classified into two categories: 1) Reactive Power under Control and 2) Voltage Magnitude under Control. If the control angle is out of its range, the converter transformer tap should be changed to restore the angle. The voltage or reactive power demand is achieved by coordinating the three level control strategies. Finally, the details of the proposed method are proposed. Numerical simulations show that the approach presented in this paper has advantages in terms of convergence and speed. © 2011 IEEE.

关键词： Level control

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Dynamics of a congestion control model in a wireless access network

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Nonlinear Analysis: Real World Applications 2013年第1期14卷 671-683页

作者： Dong, Tao Liao, Xiaofeng Huang, Tingwen State Key Lab. of Power Transmission Equipment and System Security College of Computer Science Chongqing University Chongqing 400044 China College of Software and Engineering Chongqing University of Posts and Telecommunications Chongqing 400065 China Texas AandM University at Qatar Doha P.O. Box 23874 Qatar

In this paper, a congestion control algorithm with heterogeneous delays in a wireless access network is considered. We regard the communication time delay as a bifurcating parameter to study the dynamical behaviors, i.e., local asymptotical stability, Hopf bifurcation and resonant codimension-two bifurcation. By analyzing the associated characteristic equation, the Hopf bifurcation occurs when the delay passes through a sequence of critical value. Furthermore, the direction and stability of the bifurcating periodic solutions are derived by applying the normal form theory and the center manifold theorem. In the meantime, the resonant codimension-two bifurcation is also found in this model. Some numerical examples are finally performed to verify the theoretical results. © 2012 Published by Elsevier Ltd.

关键词： Codimension-two bifurcation Congestion control Hopf bifurcation Stability Wireless access network

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