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International Conference on Computational Intelligence and software engineering (CiSE)

作者： Jianfeng Du Yi-Dong Shen Guilin Qi Guangdong University of Foreign Studies (GDUFS) Guangzhou China State Key Laboratory of Computer Science Institute of Software Chinese Academy and Sciences Beijing China School of Computer Science and Engineering South-East University Nanjing China

Consistent query answering (CQA) in relational databases under cardinality-based semantics is a well-known approach to dealing with inconsistency between databases and certain integrity constraints (ICs). It computes from a given database all consistent answers to a query that are satisfied by all the C-repairs, where a C-repair is a database that satisfies all the given ICs and minimizes the cardinality of the set of tuples in the symmetric difference with the given database. In this paper we address the problem of CQA in databases with universal constraints under cardinality-based semantics. This problem has no worst-case optimal solutions by now. We present a novel method for such problem which is worst-case optimal in terms of time data complexity and is further optimized by a decomposition-based framework. Experimental results on synthetic databases demonstrate the advantages of the proposed method.

关键词： Databases Semantics Maintenance engineering Computational modeling Integrated circuit modeling Complexity theory

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Application of Logical Petri Nets in Web Service composition

Application of Logical Petri Nets in Web Service composition

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IEEE International Conference on Mechatronics and Automation

作者： ChangYan Zhu YuYue Du College of Information Science and Engineering Shandong University of Science and Technology Qingdao China State Key Laboratory of Computer Science institute of Software Chinese Academy and Sciences Beijing China Shandong University of Science and Technology Qingdao China

In the process of Web service composition, there are several cases about working up an atomic Web service; as well as the outputs of Web service have many possibilities because of the different requirements from users. In order to address these uncertainties, Logical Petri Net(LPN) is introduced into the system of Web service composition, these problems can be well solved using the LPN's feature-passing value indeterminacy. And a model of Web service composition is proposed with the technology of ontology and Agent. Based on this model, an approach of Web service composition is presented in this paper.

关键词： Web services Ontologies Petri nets Information processing Delay OWL Fires

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An evolutionary multi-objective approach for dynamic mission planning

An evolutionary multi-objective approach for dynamic mission...

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Congress on Evolutionary Computation

作者： Lam Thu Bui Zbignew Michalewicz Department of Software Engineering Faculty of IT Quy Don University Vietnam Polish Japanese Institute of Information Technology Warsaw Poland School of Computer Science University of Adelaide Adelaide SA Australia Institute of Computer Science Polish Academy of Sciences Warsaw Poland

In this paper, we propose a computational approach for adaptation in mission planning, an important process in the chain of command and control. In this area, it has been highly regarded that military missions are often dynamic and uncertain. This characteristic comes from the nature of battlefields where the factors of enemies and terrains are not easy to be determined. Hence, it is necessary to generate plans that can adapt quickly to the changes during the missions, while avoiding paying a high cost. In addressing such an adaptation process, the issue of multi-objectivity can not be avoided. Our approach first mathematically models the dynamic planning problem with two criteria: the mission execution time and the cost of operations. Based on this quantification, we introduce an evolutionary multi-objective mechanism to adapt the current solution to new situations resulted from changes. We carried out a case study on this newly proposed approach. A modified military scenario of a mission was used for testing. The obtained results strongly support our proposal in finding adaptive solution dealing with the changes.

关键词： Planning Optimal scheduling Uncertainty Robustness Evolutionary computation Markov processes

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Efficient Data Delivery in Mobile Sensor Networks

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通讯和计算机（中英文版） 2010年第5期7卷 23-29页

作者： Yongping Xiong Jianwei Niu Jian Ma Limin Sun Institute of Computing Technology Chinese Academy of Sciences Beijing 100080 China Graduate University of the Chinese Academy of Sciences Beijing 100039 China School of Computer Science and Engineering Beihang University Beijing 100191 China Nokia Research Center Beijing 100176 China Institute of Software Chinese Academy of Sciences Beijing 100190 China

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Enhancing fairness: A novel C2C e-commerce community member reputation algorithm based on transaction social networks

Enhancing fairness: A novel C2C e-commerce community member ...

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IADIS International Conference WWW/Internet 2010

作者： Feng, Wangsen Zhang, Bei Xia, Yunni Li, Jiajing Meng, Tao Key Laboratory of Network and Software Security Assurance of Ministry of Education Computing Center Peking University Beijing 100871 China College of Computer Science Chongqing University Chongqing 400044 China School of Mechanical Electronic and Information Engineering China University of Mining and Technology Beijing 100083 China Institute of Computing Technology Chinese Academy of Sciences Beijing 100190 China

ISBN: (纸本)9789728939250

Today, almost all the C2C e-commerce community member reputation evaluating algorithms are time sensitive. The reputation of a community member is accumulated after transactions and the increment of reputation after a successful transaction is computed based on the score given by his or her transaction partner. Since people always tend to do business with those with high reputation value, the reputation of members joined in C2C community at different time will vary greatly although they may provide the same commodity quality and service. It is unfair to new comers. In this paper, we propose a novel algorithm to overcome the shortcoming. Based on the transaction social network, our algorithm employs the random walk strategy to compute member reputation and enhance system fairness. © 2010 IADIS.

关键词： Electronic commerce

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The Risk Assessment of Crime Prevention System Based on Risk Entropy Model

The Risk Assessment of Crime Prevention System Based on Risk...

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International Conference on computer Research and Development (ICCRD)

作者： Guo Xi Hu Ruimin Peng Yongjun Dai Jingjing School of Computer Science Wuhan University of China Wuhan China National Engineering Research Center for Multimedia Software Wuhan University of China Wuhan China Communication and Command Academy of PLA Wuhan China

ISBN: (纸本)9781424469925;9780769540436

With the rapid development of industrialization and urbanization, crime prevention issues become serious in China each day. Although various security facilities have played a positive role in the field of crime prevention, defects exist in poorly designed systems targeting personnel protection, physical protection, and electronic protection. Therefore, it is a major strategic task to improve risk assessment techniques and promote the objective evaluation of the risk in such area. In this paper, we present the concept of risk entropy based on the Shannon information theory, derive the risk entropy model of security node, and further analyze the expression and calculation of security node risk entropy. On the other hand, we generate the abstract security network simulation model to study the path dependence of the calculation method on security network risk entropy with a broad crime prevention system formed by connecting security node with traffic network. Finally, we complete the risk assessment of crime prevention system according to the security network. The results show that the risk entropy model is in line with the objective reality. We believe this model can not only break through bottlenecks in the technology of objective risk assessment but also bear important scientific significance in the applications of scientific prediction and effective prevention for public safety emergency response system.

关键词： Risk management Entropy Information security Protection Personnel Information theory Information analysis Risk analysis Joining processes Telecommunication traffic

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Adaptive and impulsive cluster synchronization of a general complex dynamical network

Adaptive and impulsive cluster synchronization of a general ...

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IEEE International Conference on Networking, Sensing and Control

作者： Bingxiong Shi Junan Lu Jinhu Lu Xinghuo Yu College of Mathematics and Statistics and State Key Laboratory of Software Engineering Wuhan University of China Wuhan China School of Electrical and Computer Engineering RMIT University Melbourne Australia Key Laboratory of Systems and Control Institute of Systems Science Chinese Academy and Sciences Beijing China School of Electrical and Computer Engineering RMIT University Melbourne VIC Australia

ISBN: (纸本)9781424464500;9781424464531

Recently, cluster synchronization has attracted an increasing interest in various disciplines, including mathematics, physics, and engineering sciences. This paper further investigates the cluster synchronization of a complex dynamical network by using adaptive and impulsive control techniques, respectively. Based on a complex dynamical network with two different clusters, several adaptive and impulsive cluster synchronization criteria are then proposed. It should be especially pointed out that the dynamics and its dimensions of the individual dynamical systems are different in the two different clusters. Also, some numerical simulations are given to verify the effectiveness of the above theoretical results.

关键词： Complex networks Mathematics Numerical simulation Physics Adaptive systems Programmable control Adaptive control Biology History Technological innovation

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A New Secret Sharing Scheme Based on Commutative Encrypted Function

A New Secret Sharing Scheme Based on Commutative Encrypted F...

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International Forum on Information Technology and Applications, IFITA

作者： Jun He Ximei Li Lijuan Li Chunming Tang Computer and Information Engineering Department HuaiHua Vocational and Technical College Huaihua Hunan China School of Computer and Communication Hunan University Changsha Hunan China School of Mathematics and Information Science Guangzhou University Guangzhou Guangdong China State Key Laboratory of Information Security Institute of Software Science Chinese Academy and Sciences Beijing China

With the characteristic that the commutativity of modular exponential function makes the specific order of secret distribution process less important and on basis of the abstruseness of discrete logarithm, this paper proposed a new secret sharing scheme. In the scheme, the participants themselves select the private keys, which can avoid the distributor's fraud and reduce the distribution's burden as well as ensure the scheme's reuse. The credible participants can join in or leave the participants collection at any time without restarting the scheme procedures.

关键词： Encryption computers Performance analysis Presses Data mining

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Design and Implementation of Granary Monitoring System Based on Wireless Sensor Network Node

Design and Implementation of Granary Monitoring System Based...

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2010 International Conference on Measuring Technology and Mechatronics Automation(ICMTMA 2010)(2010年检测技术与机电自动化国际会议)

作者： Yuanyuan Zhang Deyi Tai Lin Zhang Jian Ding Min Yuan Xiaowei Xu Xiang Zhen Department of Electronics & Electrical Engineering Hefei University HefeiAnhui 230022 China Department of Computer Science & Technology Hefei University HefeiAnhui 230022 China Nanjing Zhongxing Software Company Limited Nanjing Jiangsu 210090 China Hangzhou Academy of Environmental Science Hangzhou Zhejiang 310014 China

ISBN: (纸本)9781424450015

Aecording to the application requirements of granary environment, short-range wireless transmission method Is employed to design n temperature and humidity monitoring system of granary, which is based on Atmega128 microprocessor ud JN5139 wireless data transmission chip. JN5139 facilitates the design of the node of wireless sensor network, whose ultra-low power and high Integration help to reduce energy censumption. The node can not only monitor environmental parameters effectively, but also configure various sensors conveniently, thus having a strong versatility and easy networking ability. The experimental results show that the node of wireless monitor network, based on the ZigBee protocol, can be driven by 3v battery to carry out a single hop or multi-hop communications successfully, which proves the feasibility and validity of the system design.

关键词： Temperature and Humidity Monitoring System Clustered-Tree Network Zigbee JN5139 Wireless Sensor Network

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Lumiproxy:A Hybrid Representation of Image-Based Models

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Journal of computer science & Technology 2009年第3期24卷 578-587页

作者：盛斌朱鉴吴恩华张言辞 Department of Computer Science and Engineering The Chinese University of Hong Kong Faculty of Science and Technology University of Macao Institute of Software Chinese Academy of Sciences Department of Informatics University of Zurich

In this paper, we present a hybrid representation of image-based models combining the textured planes and the hierarchical points. Taking a set of depth images as input, our method starts from classifying input pixels into two categories, indicating the planar and non-planar surfaces respectively. For the planar surfaces, the geometric coefficients are reconstructed to form the uniformly sampled textures. For nearly planar surfaces, some textured planes, called lumiproxies, are constructed to represent the equivalent visual appearance. The Hough transform is used to find the positions of these textured planes, and optic flow measures are used to determine their textures. For remaining pixels corresponding to the non-planar geometries, the point primitive is applied, reorganized as the OBB-tree structure. Then, texture mapping and point splatting are employed together to render the novel views, with the hardware acceleration.

关键词： lumiproxy sampling surface fitting image-based rendering

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