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Identifying query interfaces of deep web entries automatically

Journal of Computational information Systems 2009年第3期5卷 1477-1485页

作者： Cui, Zhiming Fang, Wei Huang, Li Xian, Xuefeng Zhang, Shukui Jiangsu Provincial Key Laboratory of Computer Information Processing Technology Soochow University Suzhou 215006 China Institute of Intelligent Information Processing and Application Soochow University Suzhou 215006 China

A large number of high-quality web information is deeply hidden in the Web, which can not be indexed by conventional search engines, be called Deep Web. Because query interface is the only entrance to the Deep Web, we should find Deep Web query entries firstly. In this paper, we propose a new strategy that automatically and accurately identifies Deep Web entries based on Maximum Entropy and Bayes classifier from features that extracted from web form, link and page. Our experiments over real web pages show that the new approach can classify Deep Web entries accurately and efficiently. 1553-9105/ Copyright © 2009 Binary information Press.

关键词： Search engines

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An efficient strategy for enhancing robustness and immunization in wireless sensor networks

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Journal of Networks 2009年第3期4卷 170-177页

作者： Shu-Kui, Zhang Sheng-Rong, Gong Zhi-Ming, Cui Quan, Liu Institute of Computer Science and Technology Soochow University Suzhou 215006 China Jiangsu Provincial Key Laboratory of Computer Information Processing Technology Soochow University Suzhou 215006 China

To provide cost-effective protection for sensor networks, We introduce an immunization method where the percentage of required vaccinations for immunity are close to the optimal value of a targeted immunization scheme. Our strategy retains the advantage of being purely local, without the need of knowledge on the global network structure. The method consists of selecting the vertex with the highest degree within a distance d and asking for a neighbor that has more links than himself or more than a given threshold and immunizing him. Analysis and simulation results show that the above method is valid. It enhances network robustness against virus and provide useful hints in the search of optimal immunization strategies as the development and deploying of a sensor network system. © 2009 ACADEMY PUBLISHER.

关键词： Complex networks

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Application of learning Vector quantization network on web pages classification in agricultural website

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Journal of information and Computational Science 2009年第1期6卷 139-145页

作者： Fu, Zetian Wang, Chuanyi Zhao, Ming Liu, Lixin Zhang, Xiaoshuan China Agricultural University Beijing 100083 China Jiangsu Provincial Key Laboratory of Computer Information Processing Technology Suzhou University Suzhou 215000 China

VQ (Learning Vector Quantization) is kind of supervised and competitive learning artificial neural network and adopted in many domains, such as pattern categorization, products classification, mechanical detection. This paper proposes a new application, which integrates LVQ network with Central Vector classification method on agricultural products web pages classification as key function of the vertical search engine. The experiment shows that LVQ has higher precision compared with CPN network and the precision increases more quickly with the increasing of training numbers. © 2009 Binary information Press.

关键词： Websites

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An Improved AODV Routing Protocol Based on Remaining Power and Fame

An Improved AODV Routing Protocol Based on Remaining Power a...

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International Conference on Electronic computer technology

作者： Daming Feng Yanqin Zhu Provincial Key Laboratory of Computer Information Processing Technology Soochow University Suzhou China Soochow University Suzhou Jiangsu CN

ISBN: (纸本)9781424435623

Almost all proposed routing protocols are based on minimum hops in mobile ad hoc network. But through the research on the real communication of wireless nodes, we find that sometimes the path which has the minimum hops from the source to the destination may not be the best path. Considered the remaining power and the node selfishness, we propose an improved AODV routing protocol, I-AODV in this paper. We use a new term, node status, regard the node status as a function of the remaining power and the fame and regard the node status as the basic condition for choosing the next hop in the new routing protocol.

关键词： Routing protocols Ad hoc networks Monitoring Mobile ad hoc networks laboratories computer networks information processing Mobile communication Wireless communication Data communication

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A policy language for expressing access control properties in PDAC model

A policy language for expressing access control properties i...

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International Conference on computer Science & Education (ICCSE)

作者： Xian Wu Peide Qian School of Computer Science and Technology Jiangsu Provincial Key Laboratory for Computer Information Processing Technology Soochow University Suzhou China School of Computer Science and Technology Soochow University Suzhou China

An access control policy defines what is authorized, and an access control mechanism implements the policy to ensure that all accesses are in accordance with the underlying policy. Nowadays, many researcher are working for expressing access policies in a formal way. But it is still an open problem. This paper defines a policy language, which is named as PDPL to express access policies and access control properties in PDAC model [1]. This language unifies ldquoBANrdquo logic with past- and future- time temporal logic. We give the syntax and semantics of PDPL, and provided some examples with their English equivalents. This logic language can express belief and authorization in access control model. And it can deal with delegations of decision-making directly. It is easy for us to formulate the properties of interest in distributed systems of PDAC model through PDPL. This logical language is part of a formal system, and it will be used in an automatic model checker in the future.

关键词： Access control Logic Natural languages computer science Educational technology Engines Contracts Body sensor networks Authorization computer science education

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A Fast 2D Otsu Thresholding Algorithm Based on Improved Histogram

A Fast 2D Otsu Thresholding Algorithm Based on Improved Hist...

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Chinese Conference on Pattern Recognition (CCPR)

作者： Ningbo Zhu Gang Wang Gaobo Yang Weiming Dai School of Computer and Communication Hunan University Changsha Hunan China Provincial Key Laboratory for Computer Information Processing Technology Soochow University Soochow Jiangsu China

Otsu adaptive thresholding is widely used in classic image segmentation. Two-dimensional Otsu thresholding algorithm is regarded as an effective improvement of the original Otsu method. To reduce the high computational complexity of 2D Otsu method, a fast algorithm is proposed based on improved histogram. Two-dimensional histogram is projected onto the diagonal, which forms 1D histogram with obvious peak and valley distribution. Then two-dimensional Otsu method is applied on a line that is vertical to the diagonal to find the optimal threshold. Furthermore, three look-up tables are utilized to improve the computational speed by eliminating the redundant computation in original two-dimensional Otsu method. Theoretical analysis and experimental simulation show that the proposed approach greatly enhances the speed of thresholding and has better immunity to salt and pepper noise.

关键词： Histograms Image segmentation Computational efficiency laboratories information processing Computational complexity Computational modeling Analytical models Image processing computer vision

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Exploring Syntactic Features for Pronoun Resolution Using Context-Sensitive Convolution Tree Kernel

Exploring Syntactic Features for Pronoun Resolution Using Co...

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International Conference on Asian Language processing (IALP)

作者： Kong Fang Yancui Li Guodong Zhou Qiaoming Zhu Jiangsu Provincial Key Lab for Computer Information Processing Technology School of Computer Science and Technology Soochow Univ. Suzhou China College of Information Technology Henan Institute of Science and Technology Xinxiang Henan China Jiangsu Provincial Key Lab. for Comput. Inf. Process. Technol. Soochow Univ. Suzhou Suzhou China

This paper proposes to use a convolution kernel over parse tree to model syntactic structure information for pronoun resolution. Our study reveals that the syntactic structure features embedded in a parse tree are very effective for pronoun resolution and these features can be well captured by the context-sensitive convolution tree kernel. Evaluation on the ACE 2003 corpus shows that among all structured syntactic feature space, shortest path tree achieves the best performance. Then we incorporate more features into SPT, result shows that SPT can use successfully with normal features. Finally, we compare our system with other pronoun resolution systems, our results are outstanding in success rate than normal features and tree kernel-based method of Yang.

关键词： Convolution Kernel information processing computer science Educational institutions information technology Paper technology Electronic mail Data mining labeling

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Research of secure intranet/internet access platform based on ontology

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Journal of Networks 2009年第10期4卷 1009-1016页

作者： Shen, Shigen Ye, Lihua Yue, Guangxue Yu, Fei College of Mathematics and Information Engineering Jiaxing University Jiaxing China College of Computer and Communication Hunan University Changsha China Department of Computer Science and Technology Huaihua University Huaihua China Jiangsu Provincial Key Laboratory of Computer Information Processing Technology Suzhou China

Faced with the general trend of centralization of information, the biggest challenge to enterprise is how to ensure that all fixed computers and different mobile devices anywhere can access securely and quickly enterprise's businesses. To solve this problem, an Ontology-based Secure intranet/Internet Access Platform (OSAP) is presented. Ontology has been applied to the field of software resources sharing. Software resource ontology is defined for building the foundation of Software Resource Ontology Sharing Model (SROSM) and the OSAP. The OSAP framework is presented by semantic modeling based on SROSM for providing users with better and higher QOS in sharing software resources. The OSAP is designed with OSAP Portal, Connection Module, Session Management Module, Security Module, RDP Module, and Bitmap Caching Module. The design ideas and functionalities of all modules are introduced. Based on the open Remote Desktop Protocol (RDP), the OSAP prototype is realized and key technologies including client display, data compression and security are described. To guarantee data transmission security and avoid access problem due to the firewall obstructing port 3389, the SSL protocol is employed to encapsulate RDP data packages between clients and OSAP as the RDP is used between OSAP and Terminal Services servers. Experimental results demonstrate that the OSAP has better performance involving response time, network usage, RAM usage and CPU usage. © 2009 ACADEMY PUBLISHER.

关键词： Ontology

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A Packet Loss Discrimination Algorithm in Wireless IP Networks

A Packet Loss Discrimination Algorithm in Wireless IP Networ...

引用

International Conference on Wireless Communications, Networking and Mobile Computing (WiCom)

作者： Hai-tao Zhao Yu-ning Dong Yang Li College of Communication and Information Engineering Nanjing University of Posts and Telecommunications Nanjing China Jiangsu Provincial Key Laboratory of Computer Information Processing Technology Suzhou University Suzhou China

In this paper, we propose an algorithm WMTA (wireless multimedia transmission algorithm) for multimedia transmission control over wireless-wired IP networks. The relationship between packet length and packet loss rate over the Markov wireless error model is investigated. Based on this character, the algorithm can detect the nature of packet losses by sending large and small packets alternately, and control the sending rate of nodes. Furthermore, by use of an updating factor K, the algorithm can adapt to the changes of network states quickly. Extensive computer simulations demonstrate that the proposed scheme is effective in satisfying the end to end quality of service and reducing the congestion loss rate in various network topologies.

关键词： IP networks Wireless networks Electronic mail Streaming media TCPIP Quality of service Propagation losses History Performance loss Educational institutions

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Linear support vector machine based on kernel function

引用

Journal of Computational information Systems 2009年第4期5卷 1089-1095页

作者： Gao, Shang Hu, Xuekun Zhang, Zaiyue Cao, Cungen School of Computer Science and Engineering Jiangsu University of Science and Technology Zhenjiang 212003 China Provincial Key Laboratory of Computer Information Processing Technology Soochow University Suzhou 215006 China Institute of Computing Technology The Chinese Academy of Sciences Beijing 100080 China

Support vector machine is kind of novel machine learning method, based on statistical learning theory, which becomes the hotspot of machine learning because of its excellent learning performance. The method of support vector machine has been developed for solving classification and regression problems. Training a support vector machine requires the solutions of a very large quadratic programming problem. The algorithm is usually slow when there are many data. In order to improve the running speed, three regression models based on kernel function are introduced. One of three models is changed into a system of linear equations problem, the other models are changed into linear programming problems and their dual problems are given. Simulation results show the effectiveness of the methods, and the computation complexity are largely reduced. The kernel function and the parameter of models selection are compared and analyzed by means of an example. © 2009 Binary information Press August, 2009.

关键词： Support vector machines

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