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Learning Markov equivalence classes of Bayesian Network with immune genetic algorithm

Learning Markov equivalence classes of Bayesian Network with...

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IEEE Conference on Industrial Electronics and Applications (ICIEA)

作者： Haiyang Jia Dayou Liu Juan Chen Jinghua Guan College of Computer Science and Technology Key Laboratory for Symbolic Computation and Knowledge Engineering of Ministry of Education Jilin University Changchun Jilin China

Bayesian Networks is a popular tool for representing uncertainty knowledge in artificial intelligence fields. Learning BNs from data is helpful to understand the casual relation between variables. But Learning BNs is a NP hard problem. This paper presents an immune genetic algorithm for learning Markov equivalence classes, which combining dependency analysis and search-scoring approach together. Experiments show that the immune operators can constrain the search space and improve the {1.al performance.

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On-Line Diagnosis of Discrete-Event Systems: A Hierarchical Approach

On-Line Diagnosis of Discrete-Event Systems: A Hierarchical ...

引用

IEEE Conference on Robotics, Automation and Mechatronics

作者： Xiangfu Zhao Dantong Ouyang School of Computer Science and Technology Key Laboratory of Symbolic Computation and Knowledge Engineering of Ministry of Education Jilin University Changchun Jilin China

Hierarchy is a remedy way to reduce the demanding complexity of model-based diagnosis. In this paper, an approach to diagnosis of discrete-event systems in a hierarchical way is proposed, inspired by the concept "D-holon" and the concept "Silent Closure" presented in the literatures recently. Each extended silent closure can be seen as a special type of D-holons, called SCL-D-holon. Every hierarchical level is an SCL-D-holon built off line. When on line diagnosing a discrete-event system, only related SCL-D-holons will be called instead of all the SCL-D-holons generally, thus the space complexity is reduced. In comparison to on line creating silent closures, the efficiency is improved as well.

关键词： Discrete event systems Fault diagnosis Computer science educational technology Laboratories knowledge {1. Computer science education Systems engineering {1. Automata Monitoring

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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...

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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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Object Localization Based on Global Structure Constraint Model and Optimal Algorithm

Object Localization Based on Global Structure Constraint Mod...

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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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AN ATTRIBUTE DISCRETIZATION ALGORITHM BASED ON ROUGH SET AND INFORMATION ENTROPY

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

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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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Detecting DNA-binding Domain From Sequence and Secondary Structure Information Using Kernel-based Technique

Detecting DNA-binding Domain From Sequence and Secondary Str...

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2008 3rd International Conference on Intelligent System and knowledge {1.(第三届智能系统与知识工程国际会议)(ISKE 2008)

作者： Wang Fei Chen Lusheng Shanghai key laboratory of Intelligent Information Processing Fudan UniversityPRC Department of Computer Science and EngineeringFudan UniversityPRC Key Laboratory of Symbolic Computation and Knowledge Engineering of Ministry of EducationJilin Universi

DNA-binding proteins play an important role invarious intra-and extra-cellular *** key in theprotein is DNA-binding region also called DNA-bindingdomain(DBD).However,it is hard to search the DBDsby means of homology search or hidden Markov modelsbecause of a wide variety of the *** this work,we develop a kernel-based machine learning method bycombination of multiple "l-vs-l" binary classifiers forDNA binding domain *** result shows that93.73％ accuracy is achieved for multicategory classifierand no less than 90％ accuracy for each binary *** comparison,our classifier performs better than othermachine learning methods.

关键词： Support vector machines Sequences Hidden Markov models Learning systems DNA knowledge {1. Partial response channels Protein engineering Support vector machine classification Intelligent systems

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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...

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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...

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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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Research on Hiberarchy Trusted Network Based on the Grade Division

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

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2008 3rd International Conference on Intelligent System and knowledge {1.(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 {1. Information security Intelligent systems Intelligent networks Network servers Communication system security Data security Access protocols Routing Transport protocols

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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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