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International Conference on Fuzzy Systems and Knowledge Discovery (FSKD)

作者： Fayu Wang Key Laboratory of Computer Vision and System Ministry of Education Ministry of Education Tianjin China Tianjin Key Lab of Intelligent Computing & Novel Software Technology Tianjin university of technology Tianjin China

Association rules mining is a popular and well researched method in data mining research field , its purpose is to mine interesting relations between attributes in transaction database. Classic Apriori algorithm is one of the most influential association rules in mining boolean frequent itemsets algorithms, However, it has some disadvantages such as inefficient in generating candidate itemsets and frequently scanning database, it is not suitable for mining multiple dimensional data model which rise in recent years. A “second cut” method is proposed, which is on the basis of the Apriori algorithm. The algorithm applies to multidimensional mining association rules, and to some extent improved the efficiency of the algorithm. Referring to the manufacturing resource planning system (MRP) features of the retail points, the article sets up the sales association analysis data model based on the above algorithm. It proves that it can increase the sales dramatically by applying this methodology to the real business environment.

关键词： Association rules Itemsets Algorithm design and analysis Manufacturing Planning

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Design and implementation of a kind of EUPS for mobile service

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Journal of Information and Computational Science 2010年第11期7卷 2248-2257页

作者： Zhang, Xiaodan Zhang, Degan Qiao, Xiaodong Liang, Bing Peng, Hongtao Institute of Scientific and Technical Information of China Beijing 100038 China Tianjin Key Lab. of Intelligent Computing and Novel software Technology Tianjin University of Technology Tianjin 300191 China Key Laboratory of Computer Vision and System Ministry of Education Tianjin University of Technology Tianjin 300191 China Beijing Petroleum Managers Training Institute Beijing 100096 China

In order to support mobile service of long-distance monitoring and controlling UPS based on Web, a kind of design and implementation solution of embedded UPS (EUPS) system is brought forward in this paper. The design and implementation of system is based on ATmega161 and RTL8019AS with TCP/IP protocol suite for communication. In the EUPS system, an embedded file system is designed and implemented which can store the data and index information on a serial EEPROM chip in structured way and communicate with MCU through I2C bus. By embedding the file system into UPS system or other information appliances, users can browse and manipulate local data on the web client side. Based on our experimental tests, the performance of EUPS can meet the requirements of Web-based mobile services. © 2010 Binary Information Press.

关键词： Websites

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Detecting and Tracking Moving Targets on Omnidirectional Vision

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Transactions of Tianjin University 2009年第1期15卷 13-18页

作者：杨淑莹葛为民张成何丕廉 School of Computer Science and Technology Tianjin University Tianjin Key Lab of Intelligent Computing and Novel Software Technology Tianjin University of Technology

A method was presented to implement the detecting and tracking of moving targets through omnidirec-tional vision. The method combined optical flow with particle filter arithmetic, in which optical flow field was used to detect and locate moving targets and particle filter was used to track the detected moving objects. According to the circular image character of omnidirectional vision, the calculation equation of optical flow field and the tracking arithmetic of particle filter were improved based on the polar coordinates at the omnidirectional center. The edge of a randomly moving object could be detected by optical flow field and was surrounded by a reference region in the particle filter. A dynamic motion model was established to predict particle state. Histograms were used as the fea-tures in the reference region and candidate regions. The mutual information (MI) and Gaussian function were com-bined to calculate particle weights. Finally, the state of tracked object was computed by the total particle states with weights. Experiment results show that the proposed method could detect and track moving objects with better real-time performance and accuracy.

关键词： omnidirectional vision optical flow particle filter mutual information

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Research on context-aware computing with uncertainty for proactive service

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International Journal of Modelling, Identification and Control 2009年第3期8卷 248-255页

作者： Zhang, De-Gan Tianjin Key Lab of Intelligent Computing and Novel Software Technology Tianjin University of Technology Tianjin 300191 China Key Laboratory of Computer Vision and System Tianjin University of Technology Ministry of Education Tianjin 300191 China Key Lab of Industrial Controlling Technology Zhejiang University Hangzhou 310027 China

It is known to all that context-aware computing with uncertainty is an important part of pervasive computing for proactive service. Because multi-source evidence context-aware information with uncertainty is dynamic and changing randomly, in order to ensure the QoS of different application fields based on pervasive computing, we modified the fusion method of evidence information after considering context's reliability, time efficiency and relativity, which has improved the classic fusion rule of D-S evidence theory when used in the pervasive computing paradigm. After extending the process, we overcome the shortcoming of classic D-S evidence theory. All these suggested technologies have been successfully used in our project. The efficiency of our researches has been tested by application practice and validation of the demo. Copyright © 2009, Inderscience Publishers.

关键词： Ubiquitous computing

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NBGVF: Normally biased gradient vector flow external force for active contours

NBGVF: Normally biased gradient vector flow external force f...

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2009 International Conference on Information Engineering and Computer Science, ICIECS 2009

作者： Lu, Shaopei Wang, Yuanquan Tianjin Key Lab of Intelligent Computing and Novel Software Technology School of Computer Science Tianjin University of Technology Tianjin 300191 China

ISBN: (纸本)9781424449941

Gradient vector flow (GVF) has been one effective external force for active contours, but it is based on isotropic diffusion. The recently proposed NGVF external force just took into account the diffusion along normal direction of the level line, so it is sensitive to noise and could smear the weak boundaries. In this article, we present a novel one called normally biased gradient vector flow (NBGVF) which keeps the diffusion along the tangential direction of the level line and biases that along the normal direction. The biasing weight of the diffusion along the normal direction approaches zero at boundaries and is 1, even larger, in homogeneous regions. Consequently, the NBGVF can preserve weak edges and smooth out noise while maintaining other desirable properties of GVF and NGVF such as enlarged capture range, insensitivity to initialization and convergence to u-shape concavity. These properties are evaluated on synthetic and real images. ©2009 IEEE.

关键词： Image segmentation

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Redundant data composition of peers in p2p streaming systems using cauchy reed-solomon codes

Redundant data composition of peers in p2p streaming systems...

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6th International Conference on Fuzzy Systems and Knowledge Discovery, FSKD 2009

作者： Xu, Guangping Wang, Fayu Zhang, Hua Li, Jingxing Key Lab of Intelligent Computing and New Software Technology Tianjin University of Technology Tianjin 300191 China Key Laboratory of Computer Vision and System Ministry of Education Tianjin University of Technology Tianjin 300191 China

ISBN: (纸本)9780769537351

Erasure codes are used in many distributed applications. This paper applies Cauchy Reed-Solomon codes to P2P streaming systems which is different from classical Reed-Solomon codes. Due to churn in these systems, streaming data composition is vital for system management. We mainly concern about how to apply the coding into these systems and present the interaction among the peers and effective buffer management. This distributed sources increase the selection on disseminated encoded data and therefore statistically enhances the overall performance. © 2009 IEEE.

关键词： Reed-Solomon codes

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Image structure adaptive gradient vector flow for active contours

Image structure adaptive gradient vector flow for active con...

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2009 International Conference on Information Engineering and Computer Science, ICIECS 2009

作者： Li, Kun Wang, Yuanquan Tianjin Key Lab. of Intelligent Computing and Novel Software Technology School of Computer Science Tianjin University of Technology Tianjin 300191 China

ISBN: (纸本)9781424449941

The gradient vector flow (GVF) is an effective external force for active contours, but it's smoothness constraint doesn't take any image structure into account and the resulting diffusion equation is isotropic which would oversmooth weak edges. In this article, a novel external force named image structure adaptive gradient vector flow (ISAGVF) is proposed for active contours. The proposed ISAGVF employs certain smoothness constraint which is able to be adaptive to image structure, such that the ISAGVF snake would outperform the GVF snake in terms of noise robustness, weak edge preserving and narrow and deep concavity convergence, while possessing some other desirable properties such as enlarged capture range and insensitivity to initialization. Experiments on synthetic and real images manifest these properties of ISAGVF snake. ©2009 IEEE.

关键词： Tensors

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A wavelet-domain structure similarity for image quality assessment

A wavelet-domain structure similarity for image quality asse...

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2009 2nd International Congress on Image and Signal Processing, CISP'09

作者： Lixiong, Liu Yuanquan, Wang Yuwei, Wu Beijing Lab. of Intelligent Information Technology School of Computer Science Beijing Institute of Technology Beijing China Tianjin Key Lab. of Intelligent Computing and Novel Software Technology Tianjin University of Technology Tianjin China

ISBN: (纸本)9781424441310

Recent studies have found that adoption of structure similarity index (SSIM) was successful in reflecting human visual characteristic better compared with traditional PSNR metrics. However this method shows some defects when evaluating the quality of blurred images and compressed degraded images at low bit rate. Good quality results were hardly achieved as they do not match the human vision system (HVS) well. This paper is to introduce a new image quality assessment algorithm based on wavelet-domain structure similarity (WDSSIM). The relative importance of the edge information under different scales is considered sufficiently in image quality assessment. The experimental results have demonstrated better consistency with the subjective perception for a large range of image types. ©2009 IEEE.

关键词： Image quality

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A unique multi-functional landmark for autonomous navigation

A unique multi-functional landmark for autonomous navigation

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5th International Conference on Natural Computation, ICNC 2009

作者： Wang, Dan Jia, Yunwei Cao, Zuoliang Tianjin Key Lab. of Intelligent Computing and Novel Software Technology Tianjin University of Technology Ministry of Education China School of Mechanical Engineering Tianjin University of Technology China

ISBN: (纸本)9780769537368

To save time, improve flexibility and guarantee accuracy of the navigation system of the mobile robots, a multifunction landmark and a new navigation algorithm are proposed in this paper. With the new algorithm and landmark the mobile robots can be located by only a single landmark, and can be navigated in a large area by serial landmarks. The simple configuration and the convenient material of the landmark increased the system 's flexibility and decreased the complexity of the algorithm. From the experimental results it can be concluded that the navigation system has fast navigation speed and high navigation accuracy. © 2009 IEEE.

关键词： Navigation systems

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The earthquake probability prediction based on weighted factor coefficients of principal components

The earthquake probability prediction based on weighted fact...

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5th International Conference on Natural Computation, ICNC 2009

作者： Xueli, Wei Xiaofeng, Cui Chun, Jiang Xinbo, Zhou Tianjin Key Lab. of Intelligent Computing and Novel Software Technology Tianjin University of Technology Tianjin 300191 China Earthquake Administration of Tianjin Tianjin 300201 China

ISBN: (纸本)9780769537368

Considering there are many seismicity factors with information overlap, we apply a gray generating -A generating GM model which has higher precision to mine the potential law of these factors, and apply principal component analysis(PCA) approach to reduce the dimension of these factors, choose several seismicity factors which represent most of the information that the original seismicity factors carry, by utilizing Bayes posterior probability discriminant analysis, to predict the largest magnitude for certain region and period numerically and synthetically. As an example, we predicte the annual largest magnitude for North China(30°∼ 42°E, 108°∼125°N). The application results show the practical value of this model in the medium-short-term earthquake prediction. © 2009 IEEE.

关键词： Principal component analysis

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