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Clustering facilitated web services discovery model based on supervised term weighting and adaptive metric learning

International Journal of Web Engineering and technology 2013年第1期8卷 58-80页

作者： Chen, Lei Yang, Geng Zhu, Wei Zhang, Yingzhou Yang, Zhen College of Computer Nanjing University of Posts and Telecommunications Nanjing 210003 China State Key Laboratory of Networking and Switching Technology Beijing University of Posts and Telecommunications Beijing 100876 China Key Lab of Broadband Wireless Communication and Sensor Network Technology Nanjing University of Posts and Telecommunications Nanjing 210003 China

With the explosive growth of web services, the research on how to rapidly find the desired services becomes increasingly important and challenging. In this paper, we focus on non-semantic web services discovery and present an efficient clustering facilitated web services discovery model (CFWSFinder). Compared with the existing models, CFWSFinder has several characteristics. First, in services representing process, CFWSFinder imports WordNet and latent semantics index to represent non-semantic web services as the low-dimensional compact semantic feature vectors;Second, in services clustering process, CFWSFinder employs a modified Kernel batch self-organising map (KBSOM) neural network to minimise the services discovery duration;Third and most importantly, in services matching process, by using the category label information achieved from services clustering process, CFWSFinder can adopt supervised term weighting scheme and adaptive metric learning method to ameliorate the services discovery precision. Finally, experimental results performed on the real-world web services collection demonstrate the feasibility of the CFWSFinder. Copyright © 2013 Inderscience Enterprises Ltd.

关键词： Web services

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Fairness-oriented physical layer network coding in cooperative multiple access channels due to MRC and SIC

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The Journal of China Universities of Posts and Telecommunications 2012年第6期19卷 45-51页

作者： CHENG Yu-lun YANG Long-xiang Jiangsu Key Laboratory of Wireless Communications Nanjing University of Posts and Telecommunications Key Laboratory of Broadband Wireless Communication and Sensor Network Technology Nanjing University of Posts and Telecommunications

This paper investigates the impacts of network coding （NC） on user fairness from the network perspective in multiple access channels. Firstly, simultaneous outage is exploited as the metric to evaluate user fairness. To optimize it, a fairness-oriented physical layer NC scheme is proposed, in which users＇ signals are superimposed in specific calculated proportion at relay and then decoded by maximal ratio combination （MRC） and serial interference cancellation （SIC） at destination. Furthermore, the influence of power allocation coefficient error on simultaneous outage is also analyzed to reveal its correlation with user fairness. Simulation results indicate that the proposed scheme can supply approximately equal performance promotion for each cooperation-participated user and outperform those without fairness consideration in terms of the employed metric.

关键词： cooperative system user fairness simultaneous outage MRC SIC

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A trust information search model based on simulated annealing in P2P network

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Information technology Journal 2013年第15期12卷 3289-3293页

作者： Xu, He Huang, Han-Chen Wang, Ruchuan College of Computer Nanjing University of Posts and Telecommunications Jiangsu Nanjing 210003 China Jiangsu High Technology Research Key Laboratory Wireless Sensor Networks Jiangsu Nanjing 210003 China Key Lab of Broadband Wireless Communication and Sensor Network Technology Nanjing University of Posts and Telecommunications Ministry of Education Jiangsu Province Nanjing 210003 China Department of Leisure Management Yu Da University Miaoli 36143 Taiwan

Trust information search algorithm is one of the most important components of P2P trust model. Considering the large number of nodes and the wide range of information each node contains in P2P network, efficient search algorithm can improve the network efficiency and attract more users to join P2P network. Moreover, efficient search algorithm can also let each node in the network know the current state of the network in time. This study designs an SABS (Simulated Annealing Based Search) model based on Simulated Annealing (SA) to search the trust information in P2P network. Simulation results show that this model can obtain the optimal path and the shortest distance of the network with appropriate parameter values. © 2013 Asian network for Scientific Information.

关键词： Simulated annealing

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Adaptive Video Back Projection Super-resolution Method Using Non-local Prior

Adaptive Video Back Projection Super-resolution Method Using...

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2012 IEEE 11th International Conference on Signal Processing(ICSP 2012)

作者： Yilun Zhang Zongliang Gan Xiuchang Zhu Mingming Cao Key Lab of Broadband Wireless Communication and Sensor Network Technology Ministry of EducationNanjing University of Posts and Telecommunications

ISBN: (纸本)9781467321969

In this paper, a novel video back projection super- resolution method using non-local prior is proposed. Our approach has three steps. First, we make initial motion estimation with block-matching and fine block matching to search for the pixels with similar structural content from video sequences. In this process, an adaptive technique is introduced to avoid redundant search. Second, we do initial interpolation to the input video sequences and a bilateral filtering is applied to the interpolation frames to achieve edge-preserving image smoothing. Third, a video non-local means filter is applied to modify the error image in iteration step of the iterative back projection. The experimental result shows that the proposed method can increase image details, moreover, the chessboard effect and ringing effect along image edges can be removed and sharp and clear edges in visual perception will be obtained.

关键词： non-lcoal back projection video motion estimation super-resolution

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Novel Back-projection Framework for Single Image Super-Resolution

Novel Back-projection Framework for Single Image Super-Resol...

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2012 IEEE 11th International Conference on Signal Processing(ICSP 2012)

作者： Bin Zhao Zongliang Gan Yanbin Zhang Feng Liu Huanjuan Wang Key Lab of Broadband Wireless Communication and Sensor Network Technology Ministry of EducationNanjing University of Posts and Telecommunications

ISBN: (纸本)9781467321969

A novel back-projection framework for single image super-resolution is proposed in this paper. In our framework, the edge of the high-resolution image is firstly detected by the canny edge detection algorithm and the bilateral filtering algorithm, and the high-resolution image is divided into edge area and flat area. Then the edge area of the high resolution image is filtered by the adaptive kernel regression denoising algorithm in the iterative back-projection process. And the flat area of the high resolution image is reconstructed by the iterative back- projection method. Experimental results demonstrate that the proposed method can reconstruct high quality images in both the measure of objective quality and the subjective perception.

关键词： super-resolution iterative back-projection adaptive kernel regression denoising algorithm

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RESEARCH ON ADAPTIVE COMPRESSION CODING FOR network CODING IN wireless sensor network

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Journal of Electronics(China) 2012年第5期29卷 415-421页

作者： Liu Ying Yang Zhen Mei Zhonghui Kong Yuanyuan Key Lab of Broadband Wireless Communication and Sensor Network Technology Ministry of Education Nanjing University of Posts & Telecommunications

Based on the sequence entropy of Shannon information theory, we work on the network coding technology in wireless sensor network (WSN). In this paper, we take into account the similarity of the transmission sequences at the network coding node in the multi-sources and multi-receivers network in order to compress the data redundancy. Theoretical analysis and computer simulation results show that this proposed scheme not only further improves the efficiency of network transmission and enhances the throughput of the network, but also reduces the energy consumption of sensor nodes and extends the network life cycle.

关键词： network coding wireless sensor network (WSN) Sequence similarity Sequence entropy

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Novel Colorization Method Based on Correlation Neighborhood Similarity Pixels Priori

Novel Colorization Method Based on Correlation Neighborhood ...

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2012 IEEE 11th International Conference on Signal Processing(ICSP 2012)

作者： Huanjuan Wang Zongliang Gan Yanbin Zhang Xiuchang Zhu Key Lab of Broadband Wireless Communication and Sensor Network Technology Ministry of EducationNanjing University of Posts and Telecommunications

ISBN: (纸本)9781467321969

Colorization is a computer-aided process of automatically adding colors to grayscale images or videos according to the colors scribbled on by the user. In this paper, we propose a novel colorization method which based on correlation neighborhood similarity pixels priori. First, according to a key observation that similar intensities neighboring pixels have similar colors, our method searches the similarity neighborhood pixels group. Then, we compute the weighted coefficients of the neighborhood pixels in the luminance image and transmit the weighted coefficients to the chrominance. Finally, we obtain the chrominance values by solving a quadratic optimization problem which uses the colors scribbled on by the user as the linear constraints. The experimental results show that our approach is quite effective especially in the boundary parts. Moreover, our method can give better visually results when only a few colors scribbled on.

关键词： colorization optimization neighborhood similarity pixel joint correlation

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Adaptive Resource Allocation Method over OFDMA System for H.264 SVC Transmission

Adaptive Resource Allocation Method over OFDMA System for H....

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2012 IEEE 11th International Conference on Signal Processing(ICSP 2012)

作者： Qikun Zhao Lina Qi Zongliang Gan Hongbo Zhu Key Lab of Broadband Wireless Communication and Sensor Network Technology Ministry of EducationNanjing University of Posts and Telecommunications

ISBN: (纸本)9781467321969

This paper combines adaptive sub-carriers allocation, power allocation in OFDMA with the transmission of the H.264 SVC (Scalable Video Coding) encoded video sequences in order to support more user and provide better quality of service (Qos) to the subscribers. Firstly we compute the maximum number of users the system can support by our proposed CAC (call admission control), and then our proposed adaptive resource allocation algorithm is utilized to allocate resource to these users On the premise of meeting the most basic requirements of all the users, our proposed scheme can select appropriate resolution adaptively for users according to the channel information. Experimental results demonstrate that our scheme performs better than systems with a fixed resource allocation strategy.

关键词： OFMDA H.264 Adaptive Resource Allocation

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The Spectrum Allocation of Primary user Based on Bayesian Game

The Spectrum Allocation of Primary user Based on Bayesian Ga...

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2012 IEEE 11th International Conference on Signal Processing(ICSP 2012)

作者： Zhiqiang Fang Lina Qi Zhongliang Gan Hongbo Zhu Qikun Zhao Key Lab of Broadband Wireless Communication and Sensor Network Technology Ministry of EducationNanjing University of Posts and Telecommunications

ISBN: (纸本)9781467321969

In cognitive radio system, the Cournot game model is used for analyzing the spectrum allocation of primary users. Considering the noise is random, the spectrum allocation of primary user based on Bayesian game is proposed in this paper. First, the transmit power is viewed as one factor of the cost function. And considering the noise is uncertain, the high noise and the low noise are viewed as two different types of primary users. Then, we can obtain the strategy of primary user by using dynamic Bayesian game. The experimental results on spectrum allocation demonstrate the effectiveness of the proposed scheme.

关键词： cognitive radio Bayesian game spectrum allocation channel noise

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Intrusion detection technology of layered wireless sensor network based on Agent

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Telkomnika - Indonesian Journal of Electrical Engineering 2013年第8期11卷 4238-4243页

作者： Yu, Genjian Weng, Kunpeng Department of Computer Science Minjiang University Fuzhou 350108 China Institute of Communications Technology Fuchun Comminucations Co. Ltd Fuzhou 350108 China Key Lab of Broadband Wireless Communication and Sensor Network Technology Nanjing University of Posts and Telecommunications Ministry of Education 210003 China

The intrusion detection system and technology of classified layered-wireless sensor network was able to meet the high safety requirements of wireless sensor network, it is urgent for us to improve the identification and generalization of detection system about characters of intrusion. In this paper, we design an intelligent intrusion detection system which realizes intelligence, the effective and direct way was to add the methods, and it was used for identification and generalization of intrusion characters to the Agent function of intrusion detection. It could obtain credible judgment by updating and examining the database for the actions which the general misuse detection or anomaly detection was not sure if the intrusion was formed. © 2013 Universitas Ahmad Dahlan.

关键词： Intrusion detection

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