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检索条件"机构=Key Laboratory for Symbol Computation and Knowledge Engineering of the Ministry of Education"

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The regulation of gene expression in E-cell

The regulation of gene expression in E-cell

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3rd International Conference on Natural computation, ICNC 2007

作者： Xinhua, Lu Jigui, Sun Ying, Ren Shuai, Lu College of Computer Science and Technology Jilin University Changchun 130012 China Key Laboratory of Symbolic Computation and Knowledge Engineering Ministry of Education Jilin University Changchun 130012 China Public Teaching Center Heping Division Jilin University Changchun 130012 China

ISBN: (纸本)0769528759

Gene expression is the transformational procedure from genetic information of genome to proteome which affect the life activities of cells. The Regulation of gene expression determines the structure, quantity and functions of proteome. Existing electronic cell (E-Cell) models seldom relate to simulation on the regulations of gene expressions. In this paper, the E-Cell model we propose, named Analog-Cell, in order to reappear the life activities of cells and discover new biological rules, simulates the main regulation mechanisms in gene expression through defining regulation factors, enzymes and rational reaction rules, thus Analog-Cell obtains recommendable simulative results. © 2007 IEEE.

关键词： Gene expression

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Complex knowledge System Modeling Based on Hierarchical Fuzzy Petri Net

Complex Knowledge System Modeling Based on Hierarchical Fuzz...

引用

Web Intelligence and Intelligent Agent Technology Workshops (WI-IAT)

作者： Hongjun Pan Jigui Sun College of Computer Science Key Laboratory of Symbolic Computation and Knowledge Engineering of Ministry of Education Jilin University Changchun China

The difficulties of modeling complex knowledge system lie in a large quantity of knowledge rules and the difficulty in organizing rules and grasping their mutual logical relationships. This article proposed a concept of hierarchical fuzzy Petri nets (HFPN), which is more suitable for modeling complex knowledge system than other fuzzy Petri net models. In addition, the concepts of abstract place and abstract transition in HFPN are allowed to describe and analyze the knowledge system at diverse abstract levels. Therefore, using HFPN, the iterative and incremental methods can be applied to modeling complex knowledge system. In addition, structured approach can be naturally applied to the process of modeling knowledge system.

关键词： knowledge based systems Fuzzy systems Petri nets Intelligent agent educational technology Conferences Fuzzy logic Sun educational institutions Computer science

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Dynamic Policy Scheme for Resource Allocation in Mobile IP Handoff

Dynamic Policy Scheme for Resource Allocation in Mobile IP H...

引用

International Conference on Natural computation (ICNC)

作者： Xue-jie Liu Yan-heng Liu College of Computer Science and Technology Key Laboratory of Symbolic Computation and Knowledge Engineering of Ministry of Education Jilin University Changchun China

For the problem of multimedia applications not obtain assuring service immediately after mobile IP handoff we propose dynamic policy and design the dynamic policy scheme of resource management in mobile IP. Based on the prediction information of the mobile node, the mechanism automatically produces dynamic policies to do admission control and to prepare resources before handoff occurs. And then it uses core policies existed as reference and applies product space conditional event algebra to trigger enforcement of dynamic policy. When the resources in access domain fell short of mobile nodes' requisition, it adopts "step back" arithmetic to update dynamic policies to further adjust resource possession according to the priority to assure the services credibility. By analysis, it is shown that this scheme can guarantee QoS of applications with higher priority and significantly improve the success rate of handoff. Also this management model is much more flexible than traditional methods.

关键词： Resource management Mobile computing Application software educational institutions Computer science educational technology Laboratories knowledge engineering Computer science education Admission control

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Dynamic Variable Ordering Based Concurrent Search for Distributed CSPs

Dynamic Variable Ordering Based Concurrent Search for Distri...

引用

IFIP International Conference on Network and Parallel Computing Workshops (NPC Workshops)

作者： Chunhui LIU Jigui SUN Jian GAO College of Computer Science and Technology Jilin University Changchun China Key Laboratory of Symbolic Computation and Knowledge Engineering Ministry of Education Changchun China

Concurrent search is an efficient technique for solving distributed constraint satisfaction problems (DisCSPs). dynamic variable ordering (DVO) impacts performance of search greatly. In this paper, we present a distributed dynamic variable ordering based concurrent search algorithm, in which domain sizes of variables are calculated approximately during search. Experiments on randomly generated DisCSPs demonstrate that the proposed algorithm improves concurrent search drastically.

关键词： Parallel processing educational institutions Computer science educational technology Laboratories Computer networks Concurrent computing Distributed computing knowledge engineering Computer science education

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A CLAUSE LEARNING ALGORITHM COMBINING IMMUNE MECHANISM TO INVENT PREDICATE

A CLAUSE LEARNING ALGORITHM COMBINING IMMUNE MECHANISM TO IN...

引用

2007 International Conference on Machine Learning and Cybernetics(IEEE第六届机器学习与控制论国际会议)

作者： PENG YU DA-YOU LIU College of Computer Science and Technology Jilin University Changchun 130012 China Key Laboratory of Symbolic Computation and Knowledge Engineering of Ministry of Education Jilin Uni

Aiming at the larger search space of learning clause in Inductive Logic Programming, we put forward the definitions of the predicate template and the clause template to reduce search *** suggest IMPI algorithm, which is a genetic algorithm combining immune mechanism and uses the clause template as genetic code to learn the clause template of required *** uses immune mechanism to invent new predicates, which can extend the hypothesis language, find better *** we design when to invent *** obtaining the clause template, we use a general method based on generalization and information gain sampling to convert clause template to *** design the corresponding fitness function and genetic *** indicates that this algorithm can reduce the search space, improve the efficiency of search algorithm and can learn recursion clause by theoretical analysis and experiment *** is an effective clause learning algorithm.

关键词： Inductive logic programming Clause template Immune mechanism Recursion clause Information gain Genetic algorithm

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A New Seamless Multi-resolution Simplification Method for the Terrain Model

A New Seamless Multi-resolution Simplification Method for th...

引用

Web Intelligence and Intelligent Agent Technology Workshops (WI-IAT)

作者： Huijie Zhang Jigui Sun Changsong Qi Nan Lv College of Computer Northeast Normal University Changchun China College of Computer Science & Technology Jilin University Changchun China College of Computer Science & Technology Key Laboratory of Symbol Computation and Knowledge Engineering of the Ministry of Education Jilin University China

This paper presents a fast method to construct the simplified terrain model with the multi-resolution. In this method, we adopt the normal quad-tree hierarchy to subdivide the original terrain surface into the multi- resolution levels. For the sake of implementing the compressive storage and the efficient index for the elevation data, a connotative hierarchy is proposed and its corresponding index strategies are deduced. On the basis of the connotative hierarchy, we focus on resolving the crack problem of the simplified model. We firstly create the space filling curve during the simplification process to accelerate the search for the potential cracks. Afterwards, the different approaches are utilized to process the cracks in terms of the dissimilar terrain features. For this reason, we put forward an evaluation function that can selfadaptively identify the terrain feature according to the normal vector angle of the adjacent nodes in the connotative hierarchy. Consequently, there are not redundant triangles in our seamless multi-resolution terrain model. The proposed approaches are experimented on the real data and the results show that our method is relatively efficient and robust. Besides, the seamless simplified model has less number of triangles than the other common algorithm.

关键词： Multiresolution analysis educational institutions Intelligent agent Computer science Surface cracks Filling Conferences Acceleration Robustness Sun

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A NEW TECHNIQUE FOR RAY TRACING POINT-BASED GEOMETRY

A NEW TECHNIQUE FOR RAY TRACING POINT-BASED GEOMETRY

引用

2007 International Conference on Machine Learning and Cybernetics(IEEE第六届机器学习与控制论国际会议)

作者： YONG QUAN ZHEN-HUA ZHANG WEN-HUI LI WEI LIU Computer Graphics Laboratory College of Computer Science and Technology Jilin University Qianwei Road Changchun 130012 P.R.China Key Laboratory for Symbolic Computation and Knowledge Engineering of Ministry of Education

In this paper a new technique for ray tracing point-based models is *** approach offers a higher ray tracing speed in comparison with previous *** pre-process, we add an important attribute to each point for the purpose of ray *** rendering, an algorithm of intersecting a ray with point geometry is demonstrated to get satisfied *** approach makes it possible to render high quality ray traced images with global *** performs well especially in the way of boundary *** have tested our idea for shadows, reflection and refraction.

关键词： Points Neighbor radius Ray tracing Intersection algorithm Boundary representation

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Translating PDDL Tasks into Multi-valued Conformant Planning Tasks

Translating PDDL Tasks into Multi-valued Conformant Planning...

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International Conference on Fuzzy Systems and knowledge Discovery (FSKD)

作者： Jingjing Zhao Jigui Sun Minghao Yin College of Computer Science and Technology Key Laboratory of Symbolic Computation and Knowledge Engineering of Ministry of Education Jilin University Changchun China College of Business Administration Changchun University of Technology China

In this paper, we formally define the problem of conformant planning with multi-valued state variables, namely multi-valued conformant planning task (MCPT), and present an algorithm for transforming conformant planning problems specified in Planning Domain Definition Language (PDDL) into MCPTs. The algorithm can deal with the uncertainties of initial conditions and disjunctive goals according to two important relaxed conditions.

关键词： Technology planning Uncertainty educational institutions educational technology State-space methods Computer science Laboratories knowledge engineering Computer science education Path planning

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Anomaly Intrusion Detection Methods for Peer-to-Peer System

Anomaly Intrusion Detection Methods for Peer-to-Peer System

引用

IFIP International Conference on Network and Parallel Computing Workshops (NPC Workshops)

作者： Daxin Tian Yanheng Liu Bin Li College of Computer Science and Technology Key Laboratory of Symbolic Computation and Knowledge Engineering of Ministry of Education Jilin University Changchun Jilin China College of Mathematics Science Jilin University Changchun China

Peer-to-peer systems and applications are the hotspot of research of network applications. As peer-to-peer system has no central system and is deployed on an open network, new concerns regarding security have been raised. As an additional security measure, the intrusion detection system would help determine whether unauthorized users are attempting to access, have already accessed, or have compromised the network Intrusion detection, as the second line of defense, is an indispensable tool for highly survivable networks. In this paper two anomaly intrusion detection methods are proposed for peer-to-peer system. The main characters of the methods are that they can detect intrusion in real-time without any expert knowledge and attack signatures. One method uses hidden Markov model to check reflector DoS attacks, another based on adaptive resonance theory, which can learn the normal behavior with unsupervised method. The experimental P2P system is built on FreePastry 1.401 and JDK 1.5.0. The results have indicated that the methods can find DoS attacks immediately and find new intruders with low false alarm rate.

关键词： Intrusion detection Peer to peer computing Computer crime Hidden Markov models Resonance Protection Communication system security educational institutions Application software Authentication

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Text Categorization Method Based on Improved Mutual Information and Characteristic Weights Evaluation Algorithms

Text Categorization Method Based on Improved Mutual Informat...

引用

International Conference on Fuzzy Systems and knowledge Discovery (FSKD)

作者： Zhili Pei Xiaohu Shi Maurizio Marchese Yanchun Liang College of Computer Science and Technology Key Laboratory of Symbol Computation and Knowledge Engineering of the Ministry of Education Jilin University Changchun China College of Mathematics & Computer Science National University of Inner Mongolia Tongliao China Department of Information and Communication Technology University of Trento Povo TN USA

The improvement of text categorization by statistical methods can be performed from two main directions, namely the feature selection and the evaluation of characteristic weights. In this paper, we propose an enhanced text categorization method based on a modified mutual information algorithm and evaluation algorithm of characteristic weights which improves both aspects. The proposed method is applied to the benchmark test set Reuters-21578 Top10 to examine its effectiveness. Numerical results show that the precision, the recall and the value of F1 of the proposed method are all superior to those of existing conventional methods.

关键词： Text categorization Mutual information Frequency shift keying Frequency estimation Computer science Statistical analysis Testing educational institutions Communications technology Performance evaluation

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