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International Conference on ASIC

作者： Dexue Zhang Xiaoyang Zeng Zongyan Wang Weike Wang Xinhua Chen State Key Lab. of ASIC & System Fudan University Shanghai China College of Information Science and Engineering Shandong University of Science and Technology Qingdao China Qingdao ShanHai Microelectronics Co. Ltd. Qingdao China

Many-core SoC (MCSoC) design is one of chip design trends and challenges. Modeling and simulation for large scale MCSoC design is the key to get it right the first time. NoC is the most important component of future MCSoC. A novel modeling tool, MCVP-NoC (Many-Core Virtual Platform with Networks-on-Chip support) was designed for large scale MCSoC modeling, and can be used in design space exploration, early software development and system verification. MCVP-NoC was built on systemC, OVP(Open Virtual Platform) and TLM2.0, integrated with Orion2.0 for power and area estimation. MCVP-NoC can run real software code, and can be used to evaluate the performance of the MCSoC design under real application load.

关键词： Decoding software computer architecture Analytical models system-on-chip Estimation Nickel

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Motion image sequence space-time super resolution reconstruction based on Zernike-moment

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Zhongnan Daxue Xuebao (Ziran Kexue Ban)/Journal of Central South University (science and Technology) 2013年第SUPPL.2期44卷 294-299页

作者： Liu, Honggang Du, Junping Liang, Meiyu Wang, Chao Cao, Shouxin Beijing Key Lab. of Intelligent Telecommunication Software and Multimedia School of Computer Science Beijing University of Posts and Telecommunications Beijing 100876 China

A method of spatial super-resolution was proposed based on the fuzzy registration. Firstly, the compensated frame that is blurred was obtained using optical flow and motion compensation methods. Then, pixels were divided into two classes, related pixels and non-related pixels, through correlation judgment strategy. Moreover, the local patch motion was analyzed. For simple motion patch, gray vector was used to represent the local features. For complex motion patch, in order to improve the registration accuracy, the Zernike-moment was calculated to characterize the patch. Experimental results show that the proposed method can not only compensate the fuzzy frame, but also improve the performance of reconstruction.

关键词： Pixels

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Multi-source image fusion algorithm based on SCDPT

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Zhongnan Daxue Xuebao (Ziran Kexue Ban)/Journal of Central South University (science and Technology) 2013年第SUPPL.2期44卷 289-293页

作者： Song, Fuzhao Du, Junping Hou, Lisha Wang, Qian Bai, Erwei Lu, Cheng Beijing Key Lab. of Intelligent Telecommunication Software and Multimedia School of Computer Science Beijing University of Posts and Telecommunications Beijing 100876 China

An image fusion algorithm based on SCDPT was proposed, which is under the background of the space docking. The image fusion rule was proposed based on matching degrees-integrated energy region, and applied to the method to the high-frequency coefficients created by SCDPT decomposition. The experimental results of subjective evaluation criterion as well as objective evaluation criterion show that the improved fusion rule for SCDPT algorithm can achieve satisfactory fusion results both with standard pictures and space pictures compared to the traditional wavelet method and UDCT.

关键词： Image fusion

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A novel discrete differential evolution based cost aware data redundancy scheme for cloud providers

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Journal of Computational Information systems 2013年第22期9卷 8879-8888页

作者： Zhong, Ruiming Liu, Chuanyi Wang, Chunlu Fang, Binxing Xiang, Fei School of Computer Science Beijing University of Posts and Telecommunications Beijing 100876 China School of Software Engineering Beijing University of Posts and Telecommunications Beijing 100876 China Key Lab. of Trustworthy Distributed Computing and Service of the Ministry of Education of China Beijing University of Posts and Telecommunications Beijing 100876 China

Data availab.lity is a desirable feature for all cloud providers. However, data reliability and disaster recovery cost are always two incompatible goals because adoption of data redundancy will bring incremental cost. The emergence and development of hybrid clouds provide a novel disaster recovery solution for all cloud providers. The option of moving data out of their own data centers and into other clouds is an excellent solution which should be taken into consideration. This paper introduces a proxy called hybrid clouds based storage proxy (HCS), which transparently spreads the storage load over many clouds both private and external. With help of HCS, a cloud provider is able to implement the data redundancy with lower cost by renting the virtual resource from external clouds. In order to guarantee the data availab.lity with the minimal DR (disaster recovery) cost, a novel discrete differential evolution based cost aware data redundancy scheme is proposed for cloud provider. The experimental results show that the proposed algorithm performs much better in DR cost and resource utilization compared with other data redundancy schemes. © 2013 Binary Information Press.

关键词： Recovery

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A high-performance algorithm for frequent itemset mining

A high-performance algorithm for frequent itemset mining

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13th International Conference on Web-Age Information Management, WAIM 2012

作者： Qu, Jun-Feng Liu, Mengchi State Key Lab. of Software Engineering School of Computer Wuhan University Wuhan 430072 China

ISBN: (纸本)9783642322808

Frequent itemsets, also called frequent patterns, are important information about databases, and mining efficiently frequent itemsets is a core problem in data mining area. Pattern growth approaches, such as the classic FP-Growth algorithm and the efficient FPgrowth*algorithm, can solve the problem. The approaches mine frequent itemsets by constructing recursively conditional databases that are usually represented by prefix-trees. The three major costs of such approaches are prefix-tree traversal, support counting, and prefix-tree construction. This paper presents a novel pattern growth algorithm called BFP-growth in which the three costs are greatly reduced. We compare the costs among BFP-growth, FP-Growth, and FPgrowth*, and illuminate that the costs of BFP-growth are the least. Experimental data show that BFP-growth outperforms not only FP-Growth and FPgrowth*but also several famous algorithms including dEclat and LCM, ones of the fastest algorithms, for various databases. © 2012 Springer-Verlag.

关键词： Data mining

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Usability analysis of Web Service behavior based on interface automata

Usability analysis of Web Service behavior based on interfac...

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2012 IEEE 3rd International Conference on software Engineering and Service science, ICSESS 2012

作者： Zhang, Yan Yu, Xiaofeng Zhang, Tian Department of Computer Science and Technology Beijing Electronic Science and Technology Institute Beijing 100070 China State Key Lab. for Novel Software Technology Nanjing University Nanjing 210093 China School of Business State Key Lab. for Novel Software Technology Nanjing University Nanjing 210093 China Department of Computer Science and Technology State Key Lab. for Novel Software Technology Nanjing University Nanjing 210093 China

ISBN: (纸本)9781467320054

In the Web Service world, it is an important technique that taking the usable behaviors in the existed web services provides some value-added functions by the service composition. Therefore, the usability analysis of web service behaviors is a significant problem to be solved. Based on our early study about behavior derivation for software components by interface automata (IA), a method is given for checking whether there are usable behaviors in a web service or not according to a user's requirement. A behavior is usable if it can be preserved in a composite web service under some constraints, otherwise it is unusable. Web services are described by BPEL4WS and the user's requirements are specified by MSCs. The key step in our proposal is to build an IA model for the web service behaviors. Thus, we give the transformation rules from BPEL4WS to IA. By using the algorithm of constructing an environment for an IA which had been given in our early works, the usability of a web service behaviors is checked. A case study from real application is used to validate our proposal. © 2012 IEEE.

关键词： Web services

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Discriminant graph based linear embedding

Discriminant graph based linear embedding

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8th International Conference on Intelligent Computing Technology, ICIC 2012

作者： Li, Bo Liu, Jin Dong, Wen-Yong Zhang, Wen-Sheng School of Computer Science and Technology Wuhan University of Science and Technology 430081 Wuhan China State Key Lab. for Novel Software Technology Nanjing China State Key Lab. of Software Engineering Wuhan China Institute of Automation Chinese Academy of Science Beijing China

ISBN: (纸本)9783642315879

LLE is a nonlinear dimensionality reduction method, which has been successfully applied to data visualization. Based on the assumption of local linearity, LLE can compute the weights between the KNN nodes using the local least reconstruction errors, which increase the computational cost. In this paper, a method titled Discriminant Graph Based Linear Embedding (DGBLE) is proposed to set the weights between the nodes in the KNN graph directly to reduce the computational expense. Moreover, lab.l information can also be taken into account to improve the discriminant power of the original LLE. Experiments on some benchmark data show that the proposed method is feasible and effective. © 2012 Springer-Verlag.

关键词： Data visualization

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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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Abnormal network traffic detection approach based on alive entropy

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Tongxin Xuebao/Journal on Communications 2013年第SUPPL.2期34卷 51-57页

作者： Mu, Xiang-Kun Wang, Jin-Song Xue, Yu-Feng 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

A novel alive entropy-based detection approach was proposed, which detects the abnormal network traffic based on the values of alive entropies. The alive entropies calculated based on the NetFlow data coming from the network traffic of input and output of a whole system, which is essentially a monitored network. In order to decrease false positive rate of abnormal network traffic, different scales are selected to compute the values of alive entropies in different sizes of network traffic. With the low false positive rate of abnormal network traffic, the abnormal network traffic can be effectively detected. Experiments carried out on a real campus network were used to evaluate the effectiveness of the proposed approach. A comparative study illustrates that the proposed approach may easily detect the abnormal network traffic with random characteristics in comparison with some "conventional" approaches reported in the literatures.

关键词： Entropy

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Unistroke gestures on multi-touch interaction: Supporting flexible touches with key stroke extraction 12

Unistroke gestures on multi-touch interaction: Supporting fl...

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2012 17th ACM International Conference on Intelligent User Interfaces, IUI'12

作者： Jiang, Yingying Tian, Feng Zhang, Xiaolong Liu, Wei Dai, Guozhong Wang, Hongan Intelligence Engineering Lab. Institute of Software Chinese Academy of Sciences Beijing China Pennsylvania State University United States State Key Lab. of Computer Science Institute of Software Chinese Academy of Sciences Beijing China

ISBN: (纸本)9781450310482

Gesture inputs on multi-touch tabletops usually involve multiple fingers (more than two) and casual touchdowns or liftoffs of fingers. This flexibility of touch gestures allows more natural user interaction, but also poses new challenges for accurate recognition of multi-touch gestures. To address these challenges, we propose a new approach to recognize flexible multi-touch stroke gestures on tabletops. Based on a user study on multi-touch unistroke gestures, we develop a gesture recognition method by extracting key strokes embedded in flexible multi-touch input. Our evaluation study result shows that this method can greatly improve the recognition accuracy of flexible multi-touch unistroke gestures on tabletops. Copyright © 2012 ACM.

关键词： Gesture recognition

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