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检索条件"机构=Key Laboratory of Ministry of Education for Data Engineering and Knowledge Engineering"

共 3244 条记录，以下是3061-3070 订阅

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Application of Aggregated knowledge Concept in Automatic knowledge Acquisition from Chinese Web Pages

Application of Aggregated Knowledge Concept in Automatic Kno...

引用

International Symposiums on Information Processing (ISIP)

作者： Haiyan Che Jigui Sun Xi Bai Lian Shi Key Laboratory of Symbolic Computation and Knowledge Engineering of Ministry of Education Jilin University Changchun Jilin China Jilin University Changchun Jilin CN

ISBN: (纸本)9781424430536;9780769531519

Proper ontology definition is the prerequisite for efficient knowledge acquisition. For the complex knowledge that could not be described by simple binary relation, we advocated a methodology for aggregated knowledge acquisition, describing how to define the ontology for such aggregated knowledge concept and how to acquire knowledge basing on such definition. Experiment shows that this methodology is effective in automatic knowledge acquisition from Chinese free text.

关键词： knowledge acquisition Web pages Ontologies Natural languages Semantic Web Information processing Application software Sun educational institutions Computer science

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AN ATTRIBUTE DISCRETIZATION ALGORITHM BASED ON ROUGH SET AND INFORMATION ENTROPY

AN ATTRIBUTE DISCRETIZATION ALGORITHM BASED ON ROUGH SET AND...

引用

2008 International Conference on Machine Learning and Cybernetics(2008机器学习与控制论国际会议)

作者： HE LIU DA-YOU LIU XIAO-HU SHI YING GAO College of Computer Science and Technology Jilin University Changchun 130012 China Key Laboratory for Symbolic Computation and Knowledge Engineering of Ministry of Education Changchun 130012 China

Attribute discretization is one of the key issues for the Rough Set theory. First, a method is proposed to compute an initial cut points set. The indistinguishable relation of decision tables did not change, and the number of elements in the initial cut points set was reduced. Then, the cut point information entropy was defined to measure the importance of a cut point. Finally, an attribute discretization algorithm based on the Rough Set and information entropy was proposed. The consistence of decision tables did not change, and the mixed decision table was considered, which contains continuous and discrete attributes. The experimental results show that this algorithm is effective and is competent for processing the large-scale datasets.

关键词： Attribute Discretization Rough Set Information Entropy Cut Point

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Object Localization Based on Global Structure Constraint Model and Optimal Algorithm

Object Localization Based on Global Structure Constraint Mod...

引用

International Conference on Innovative Computing, Information and Control (ICICIC)

作者： Miao Liu Dongwei Guo Jie Ma Xiaohua Liu Dan Li Chunguang Zhou College of Computer Science and Technology Jilin University Changchun China Key Laboratory of Symbolic Computation and Knowledge Engineering of Ministry of Education Jilin University Changchun China

ISBN: (纸本)9781424431977;9780769531618

We present a novel object localization approach based on the global structure constraint model (GSC) and optimal algorithm. In GSC, Objects are described as constellations of points satisfied with their specific global structure constraints. The spatial relations among all the patches having stable color information and their representative color information around patches are encoded. Then, the searching algorithm, i.e. genetic algorithm, is used to locate target objects in images by finding out the exactly matched position. In the experiment, we tested the approach on a collection of human face images and the results demonstrated the approach is simple, effective and efficient.

关键词： Computational modeling Image color analysis Face Shape Computer vision Artificial neural networks Image resolution

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Dynamic Policy Updating Based on One-Point Coverage Random Sets Theory

Dynamic Policy Updating Based on One-Point Coverage Random S...

引用

International Workshop on knowledge Discovery and data Mining (WKDD)

作者： Wei Da Yan-heng Liu Lian-deng Li Xue-jie Liu Hai-yan Hu Key Laboratory of Symbolic Computation and Knowledge Engineering of Ministry of Education Jilin University Changchun Jilin China College of Computer Science and Technology Jilin University Changchun Jilin China

Aiming at the dynamic policy trigger problem in policy based network management, this thesis first introduces the uncertain information generated by one-point coverage random sets theory and also the unified framework of fuzzy information. On the basis of which, according to the feature of policy based network management, a model used to update the predicted information using present known information, experience, and knowledge is designed. At the same time, this thesis put forward that, take the semblance of policy as constant probability in product space conditional event algebra, so as to execute information fusion of multiple sets of related policy. In the end, compared with the policy based inference system and then analyze the result.

关键词： Set theory Resource management Fuzzy set theory Technology management Fuzzy sets knowledge management Algebra Environmental management Probability Probabilistic logic

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Notice of Retraction: Experimental Research on a New Authentication Protocol for Wireless Communication Network Based on WiMAX

Notice of Retraction: Experimental Research on a New Authent...

引用

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

作者： Ruixue Li Zhiyi Fang Peng Xu Wei Xiao Wei Wang College of Computer Science and Technology Key Laboratory of Symbolic Computation and Knowledge Engineering of Ministry of Education Jilin University Changchun China School of Computer Northeast Normal University Changchun China

This article has been retracted by the publisher.

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Availability Analysis and Evaluation of Flexible Supply Chain System

Availability Analysis and Evaluation of Flexible Supply Chai...

引用

ISECS International Colloquium on Computing, Communication, Control, and Management, CCCM

作者： MingHua Jiang Shuqing Ma Jingli Zhou Ming Hu College of Computer Science Wuhan University of Science and Engineering Wuhan China Key Laboratory of Data Storage System Ministry of Education Huazhong University of Science and Technology Wuhan China

As complexity and demand for new products grow, companies are realizing that their supply chains need to be more flexible. Currently, in supply chain system, users' reliance has driven a universal user expectation that all the information be readily availability whenever and wherever they want. Evaluating and thinking about managing such availability are therefore becoming one of the important factors to improve the performance of the supply chain system. So, how to effectively analyze and evaluate service availability of supply chain system is a challenging problem for investigators. In this paper, the architecture of web-based services of flexible supply chain system is interpreted elaborately, and then an imperfect coverage service model for this system is designed and analyzed exhaustively. The result achieved from this model can help designers find the right tradeoffs for achieving availability of users required while providing acceptable levels of performance.

关键词： Supply chains Availability Servers databases Web server Business Computer architecture

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An improved particle swarm optimization algorithm for flowshop scheduling problem

An improved particle swarm optimization algorithm for flowsh...

引用

International Conference on Information and Automation (ICIA)

作者： Bo Li Changsheng Zhang Ge Bai Erliang Zhang a. The computing center of Changchun Institute of Technology b. Key Laboratory of Symbol Computation and Knowledge Engineering of the Ministry of Education c. Aviation university of air force Changchun China

The flowshop scheduling problem has been widely studied in the literature and many techniques have been applied to it, but few algorithms have been proposed to solve it using particle swarm optimization algorithm (PSO) based algorithm. In this paper, an improved PSO algorithm (IPSO) based on the ldquoall differentrdquo constraint is proposed to solve the flowshop scheduling problem with the objective of minimizing makespan. It combines the particle swarm optimization algorithm with genetic operators together effectively. When a particle is going to stagnates, the mutation operator is used to search its neighborhood. The proposed algorithm is tested on different scale benchmarks and compared with the recently proposed efficient algorithms. The results show that both the solution quality and the convergent speed of the IPSO algorithm precede the other two recently proposed algorithms. It can be used to solve large scale flowshop scheduling problem effectively.

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Research on Hiberarchy Trusted Network Based on the Grade Division

Research on Hiberarchy Trusted Network Based on the Grade Di...

引用

2008 3rd International Conference on Intelligent System and knowledge engineering(第三届智能系统与知识工程国际会议)(ISKE 2008)

作者： Jian Wang Yanheng Liu Jing Zhang Jianqi Zhu Tianzhe Dong College of Computer Science and Technology Jilin UniversityChangchunJilin130012China Key Laboratory of Symbolic Computation and Knowledge Engineering of Ministry of Education Jilin UniversityChangchunJilin130012China

A framework of hiberarchy trusted network basedon the grade division was put forward,and thepartition rules of trusted attributes as well as themethods of grade division were explained in ***,the potential applications of this frameworkin trusted network were discussed,and the accessprocedure of terminals in hiberarchy trusted networkwas given based on the existing research *** show that by the proposed framework,notonly the safety and reliability of network can beensured,but also the flexibility of ways to accessnetwork is strengthened,and that the framework canprovide supports for interoperability of differentequipment suppliers.

关键词： knowledge engineering Information security Intelligent systems Intelligent networks Network servers Communication system security data security Access protocols Routing Transport protocols

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The Application of PSC-CEA in the Process of Resource Allocation Dynamic Policy Triggering during the Switchover of Mobile IP

The Application of PSC-CEA in the Process of Resource All...

引用

International Conference on MultiMedia and Information Technology, MMIT

作者： Wei Da Liu Yan-heng Yu Xue-Gang Hao Jian-ying Li Lian-deng Key Laboratory of Symbolic Computation and Knowledge Engineering of Ministry of Education Jilin University Jilin China Jilin University Changchun Jilin CN College of Computer Science and Technology Jilin University China

This paper demonstrates the necessity of the use of PSC-CEA for dynamic policy triggering in the process of mobile IP switching; in the mean time, according to the characteristics of policy based network management, propose a dynamic policy trigger model, and designs a mechanism which is used to update dynamic policy according to known information, experience and knowledge to satisfy the QoS of mobile services and use current network resource sufficiently.

关键词： Resource management Quality of service Space technology Mobile computing Extraterrestrial measurements Technology management Switches Algebra Technology forecasting Information technology

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Modeling Cascading Failures in Congested Internet

Modeling Cascading Failures in Congested Internet

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The 9th International Conference for Young Computer Scientists(第九届国际青年计算机大会)

作者： Jian Wang Yanheng Liu Xin Sun Yu Jiao College of Computer Science and Technology Jilin University Changchun Jilin 130012 China Key Laboratory of Symbolic Computation and Knowledge Engineering of Ministry of Education Jilin University Changchun Jilin 130012 China

Internet is a complex network with the characteristic of self-organized criticality. The cascading dynamics of Internet are presented and two reasons are pointed out, which may cause cascading failures. Different from betweenness centrality, a congestion function to represent the extent of congestion is proposed. By introducing the concept of "delay time", the correlation between permanent removing and non-removing is built. And a new evaluation function of network efficiency based on congestion function is given in order to measure the damage of cascading failures. Moreover some effects of network structure and size, delay time on congestion propagation are also investigated, and cascading process composed of three phases and some factors affecting cascade propagation are uncovered.

关键词： Internet complex network cascading failures propagation model network topology.

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