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Qualitative spatial relationships cleaning for spatial data mining

Qualitative spatial relationships cleaning for spatial data ...

引用

International Conference on Machine Learning and Cybernetics, ICMLC 2005

作者： Sun, Hai-Bin Li, Wen-Hui Key Laboratory of Symbol Computation and Knowledge Engineering of the Ministry of Education College of Computer Science and Technology Jilin University Changchun 130012 China

ISBN: (纸本)078039092X

In this article, we investigate the problem of preparing qualitative spatial relations before implementing spatial data mining by checking consistency in a constraint network, which includes topological and cardinal directional relations between pairs of spatial objects. We aim to explore potential spatial relations and possible inconsistency among the data of relationships for enforcing the correctness of spatial data mining. This task is carried out through qualitative spatial reasoning method, specifically consistency checking. We try to lay the theoretical foundation for this kind of problem. Instead of using conventional composition tables, we investigate the interactions between topological and cardinal directional relations with the aid of rules. These rules are shown to be sound, i.e. the deductions are logically correct. Based on these rules, an improved constraint propagation algorithm is introduced to enforce the path consistency. An example is presented to show the utility of these rules. © 2005 IEEE.

关键词： Data mining

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Super-resolution reconstruction from fluorescein angiogram sequences

Super-resolution reconstruction from fluorescein angiogram s...

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International Conference on Intelligent Computing, ICIC 2005

作者： Guo, Xiaoxin Xu, Zhiwen Lu, Yinan Liu, Zhanhui Pang, Yunjie Key Laboratory of Symbol Computation and Knowledge Engineering Jilin University Ministry of Education Qianjin Road 10# Changchun 130012 China

ISBN: (纸本)9783540282266

Intensity degradations are a familiar problem for fluorescein angiogram sequences. In this paper, we attempt to super-resolve a fluorescein angiogram, and to keep the high intensity pixels from degrading. To this end, we incorporate a new constraint, called intensity constraint, to Miller's regularization formulation with a smoothness constraint. Considering the specified requirement for fluorescein angiograms, we also modify the Q-th order converging algorithm for implementation purpose. In our scheme, including its formulation and implementation, super-resolution reconstruction can not only handle the traditional problems, such as blur, decimation, and noise, but also achieve an important feature, intensity preservation. The experiments show that our approach has satisfactory results in the two aspects. © Springer-Verlag Berlin Heidelberg 2005.

关键词： Image reconstruction

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A Distributed Q-Learning Algorithm for Multi-Agent Team Coordination

A Distributed Q-Learning Algorithm for Multi-Agent Team Coor...

引用

International Conference on Machine Learning and Cybernetics (ICMLC)

作者： Jing Huang Bo Yang Da-You Liu Key Laboratory of Symbolic Computation and Knowledge Engineering of Ministry of Education Jilin University Changchun China

Q-learning is an effective model-free reinforcement learning algorithm. However, Q-learning is centralized and competent only for single agent learning but not multi-agent learning because in later case the size of state-action space is huge and will grow exponentially with the number of agents increasing. In the paper we present a distributed Q-learning algorithm to solving this problem. In our algorithm, the tasks of learning optimal action policy are distributed to each agent in team but not a central agent. In order to reduce the size of action-state space of multi-agent team we introduce a state-action space sharing strategy of agent team, through which one agent in team can use the states already explored by other agents before and need not take time to explore these states again. Additionally, our algorithm has the ability to allocate sub-goals dynamically among agents according to environment changing, which can make agent team coordinate more efficiently. Experiments show the efficiency of our algorithm when it is applied to the benchmark problem of predator-prey pursuit game, also called pursuit game, in which a team of predators coordinate to capture a prey.

关键词： Machine learning algorithms Pursuit algorithms Multiagent systems educational institutions Computer science educational technology Laboratories knowledge engineering Computer science education Learning systems

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Reasoning about ceteris paribus preference with constraint hierarchy framework

Reasoning about ceteris paribus preference with constraint h...

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International Conference on Machine Learning and Cybernetics (ICMLC)

作者： Yong-Gang Zhang Ji-Gui Sun Key Laboratory for Symbolic Computation and Knowledge Engineering of Ministry of Education Jilin University Changchun China

CP-networks provide a convenient means for expressing preferences in reasoning, but it is not good at handling preferences with hard constraints. The paper proposes a new approach, which transforms the CP-network with hard constraints into one constraint hierarchy, therefore one could process preferences and constraints in a single formalism with fruitful constraint solving algorithms. Furthermore, illustrates it with some examples, proves that the transformation preserves the ceteris paribus property and presents some complexity results. Finally compares it with related work and concludes the paper.

关键词： Artificial intelligence Graphical models Bayesian methods Sun educational institutions Computer science educational technology Laboratories knowledge engineering Computer science education

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A Fuzzy neural network system based on generalized class cover and particle swarm optimization

A Fuzzy neural network system based on generalized class cov...

引用

International Conference on Intelligent Computing, ICIC 2005

作者： Huang, Yanxin Wang, Yan Zhou, Wengang Yu, Zhezhou Zhou, Chunguang College of Computer Science and Technology Jilin University Key Laboratory for Symbol Computation and Knowledge Engineering of the National Education Ministry Changchun 130012 China

A voting-mechanism-based fuzzy neural network system is proposed in this paper. When constructing the network structure, a generalized class cover problem is presented and its two solving algorithm, an improved greedy algorithm and a binary particle swarm optimization algorithm, are proposed to get the class covers with relatively even radii, which are used to partition fuzzy input space and extract fewer robust fuzzy IF-THEN rules. Meanwhile, a weighted Mamdani inference mechanism is adopted to improve the efficiency of the system output and a real-valued particle swarm optimization-based algorithm is used to refine the system parameters. Experimental results show that the system is feasible and effective. © Springer-Verlag Berlin Heidelberg 2005.

关键词： Neural networks

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A DYNAMIC CONSTRAINT SOLVING SCHEME FOR SEMI ON-LINE SCHEDULING PROBLEMS

A DYNAMIC CONSTRAINT SOLVING SCHEME FOR SEMI ON-LINE SCHEDUL...

引用

IFIP TC12 WG12.5-Second IFIP Conference on Artificial Intelligence Applications and Innovations(AIAI2005)

作者： Juyang Zhang Jigui Sun Yonggang Zhang College of Computer Science & Technology Jiiin University Key Laboratory for Symbolic Computation and Knowledge Engineering of Ministry of Education

Most of real-life scheduling problems are semi on-line scheduling,where we do not know all the time variables of jobs in ***,solving such dynamic problems is a hot topic of research in Constraint *** this paper we analyze the constraints in the semi on-line scheduling problems and introduce the concept of monotonic about constraints which appear in general dynamic constraint *** designed a generic dynamic constraint solving algorithm for solving the scheduling *** give an example of its application to semi on-line discrete resource-constrained scheduling problem(ship-loading problem).

关键词： Scheduling Semi On-line Constraint Solving Monotonic

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Image registration based on pseudo-polar FFT and analytical fourier-mellin transform

Image registration based on pseudo-polar FFT and analytical ...

引用

International Conference on Intelligent Computing, ICIC 2005

作者： Guo, Xiaoxin Xu, Zhiwen Lu, Yinan Liu, Zhanhui Pang, Yunjie College of Computer Science and Technology Key Laboratory of Symbol Computation and Knowledge Engineering of the Ministry of Education Jilin University Qianjin Street 2699 Changchun 130012 China

ISBN: (纸本)9783540282266

This paper proposes a novel registration algorithm based on Pseudo-Polar Fast Fourier Transform (FFT) and Analytical Fourier-Mellin Transform (AFMT) for the alignment of images differing in translation, rotation angle, and uniform scale factor. The proposed algorithm employs the AFMT of the Fourier magnitude to determine all the geometric transformation parameters with its property of the invariance to translation and rotation. Besides, the proposed algorithm adopt a fast high accuracy conversion from Cartesian to polar coordinates based on the pseudo-polar FFT and the conversion from the pseudo-polar to the polar grid, which involves only ID interpolations, and obtain a more significant improvement in accuracy than the conventional method using cross-correlation. Experiments show that the algorithm is accurate and robust regardless of white noise. © Springer-Verlag Berlin Heidelberg 2005.

关键词： Image processing

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Consistency check between behaviour models

Consistency check between behaviour models

引用

International Symposium on Communications and Information Technologies (ISCIT)

作者： Hongyuan Wang Tie Feng Jiachen Zhang Ke Zhang Key Laboratory Symbolic Computation and Knowledge Engineering of Ministry of Education College of Computer Science and Technology Jilin University Changchun China

In UML, a modeling language popularly used to describe models at different abstraction levels, sequence diagram and statechart are both used to represent systems' behavior models. A consistency problem may arise due to the fact that sequence diagram represent interactive behavior of all objects, whereas statechart represent the complete behavior of one specific object. This paper proposes an approach checking the consistency between sequence diagrams and state diagrams. In our approach, statechart is formalized using finite state processes and sequence diagram is represented using messages trace. An existing tool LTSA is used to support our method.

关键词： Object oriented modeling Unified modeling language Laboratories knowledge engineering Computer science education Systems engineering education educational institutions Computer science educational technology Software design

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A PKI-based lightweight workflow model

A PKI-based lightweight workflow model

引用

International Conference on Control and Automation (ICCA)

作者： Jian Zhang Jigui Sun Niya Li Chengquan Hu Zehai Li College of Computer Science and Technology Jilin University and with the Key Laboratory of Symbolic Computation and Knowledge Engineering of Ministry of Education Jilin University China

The workflow model is the abstract expression of the workflow or the business process. Following the WfMC reference model, a PKI-based lightweight workflow model named as PBLW is put forward in this paper. The framework of PBLW is proposed. Based on the time constraint directed graph, the workflow theory model in formalization is described in detail, and the time constraint problems are discussed in order to enhance the time management ability of the workflow model. Furthermore, in order to express the complicated secure access control constraint of the workflow, a conditioned RBAC model based on PKJ technology is presented, according to the traditional RBAC security access control model. Finally, the workflow engine driven algorithms for the workflow instance are given. By the actual inspection and users' feedback, it proves that this model can express the basic requirements of a majority of the process applications.

关键词： Engines Time factors educational technology Laboratories knowledge engineering Computer science education Constraint theory Access control Workflow management software Computer science

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Applying change impact analysis and design metrcs in CBR based software design improvement

Applying change impact analysis and design metrcs in CBR bas...

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International Symposium on Communications and Information Technologies (ISCIT)

作者： Tie Feng Jiachen Zhang Wenjin Li Key Laboratory Symbolic Computation and Knowledge Engineering of Ministry of Education College of Computer Science and Technology Jilin University Changchun Jilin China

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