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An extended system method for consistent fundamental matrix estimation

An extended system method for consistent fundamental matrix ...

引用

International Conference on Intelligent Computing, ICIC 2005

作者： Zhong, Huixiang Feng, Yueping Pang, Yunjie Key Laboratory of Symbol Computation and Knowledge Engineering Jilin University Ministry of Education Changchun 130012 China

ISBN: (纸本)9783540282266

This paper is concerned with solution of the consistent fundamental matrix estimation in a quadratic measurement error model. First an extended system for determining the estimator is proposed, and an efficient implementation for solving the system-a continuation method is developed to fix on an interval in which a local minimum belongs. Then an optimization method using a quadratic interpolation is used to exactly locate the minimum. The proposed method avoids solving total eigenvalue problems. Thus the computational cost is significantly reduced. Synthetic and real images are used to verify and illustrate the effectiveness of the proposed approach. © Springer-Verlag Berlin Heidelberg 2005.

关键词： Computer systems

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DualRank: A dual-phase algorithm for optimal profit mining in retailing market

引用

10th Asian Computing Science Conference, ASIAN 2005

作者： Xu, Xiujuan Jia, Lifeng Wang, Zhe Zhou, Chunguang Key Laboratory of Symbol Computation and Knowledge Engineering Jilin University Ministry of Education Changchun 130012 China

ISBN: (纸本)3540307672

We systematically propose a dual-phase algorithm, DualRank, to mine the optimal profit in retailing market. DualRank algorithm has two major phases which are called mining general profit phase and optimizing profit phase respectively. In the first phase, the novel sub-algorithm, ItemRank, integrates the random distribution of items into profit mining to improve the performance of item order. In the other phase, two novel optimizing sub-algorithms are proposed to ameliorating results generated in the first phase. According to the cross-selling effect and the self-profit of items, DualRank algorithm could solve the problem of item order objectively and mechanically. We conduct detailed experiments to evaluate DualRank algorithm and experiment result confirms that the new method has an excellent ability for profit mining and the performance meets the condition which requires better quality and efficiency. © Springer-Verlag Berlin Heidelberg 2005.

关键词： Data mining

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CommonCube-based conceptual modeling of ETL processes

CommonCube-based conceptual modeling of ETL processes

引用

5th International Conference on Control and Automation, ICCA'05

作者： Li, Zehai Sun, Jigui Yu, Haihong Zhang, Jian College of Computer Science and Technology Jilin University 130012 Changchun China Key Laboratory of Symbolic Computation and Knowledge Engineer Ministry of Education 130012 Changchun China

ISBN: (纸本)0780391381

ETL tools are responsible for the extraction of data from sources, their cleansing and loading into a target data warehouse. However, nowadays, the design and development of ETL processes are performed in an in-house fashion, and need uniformed methodological foundations. In this paper, we will propose a novel conceptual model for the modeling of ETL processes. We employ CommonCubes to represent the cubes in a target data warehouse. CommonCubes release the design of ETL processes from overdependence on the physical schema of the target data warehouse, and enable the designers to pay more efforts to data transforming than data loading when designing ETL processes. Based on the constraint functions on source attributes and the transforming operations on target attributes, we define ETL mappings to capture the semantics of various relationship cardinalities between source attributes and target attributes, which provide a good basis for the design of ETL processes. © 2005 IEEE.

关键词： Data processing

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Operational semantics of ambient calculus

Operational semantics of ambient calculus

引用

SOSE 2005: IEEE International Workshop on Service-Oriented System engineering

作者： Zhang, Jing Jin, Ying Guo, De-Gui Liu, Lei Jin, Cheng-Zhi Key Laboratory of Symbolic Computation and Knowledge Engineering Ministry of Education of P.R.China Juin University Changchun 130012 China

ISBN: (纸本)0769524389

Mobile ambients is a process calculus for modeling mobile agents in wide-area networks. It has important theoretical and practical values in studying concurrent and mobile computation as well as the security of interactive systems. In this paper a frame structure is given for Mobile Ambients. First we introduce the concept of ambient calculus frame. Then we propose a construction method for translating an ambient definition into the frame definition, a transformation function is given based on the method. Next the movement and interaction of the code are discussed based on the frame structure. Finally an operating semantics is developed basing on the frame structure, an example of a frame and its execution are given. Introducing frame structure for ambient calculus is an attempt to provide languages support for asynchronous, distributed, and mobile programming. The ideas and methods in this paper can also be applied to other calculi with concurrency and mobility. © 2005 IEEE.

关键词： Mobile computing

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Information flow security for interactive systems

引用

International Conference on Embedded and Ubiquitous Computing, EUC 2005

作者： Jin, Ying Liu, Lei Zheng, Xiao-Juan Key Laboratory of Symbolic Computation and Knowledge Engineering Jilin University Ministry of Education of P.R. China Changchun 130012 China Software College Northeast Normal University Changchun 130117 China

ISBN: (纸本)3540308075

The use of the Internet raises serious behavioural issues regarding, for example, security and the interaction among agents that may travel across links. Model-building such interactive systems is one of the biggest current challenges in computer science. A general model, action calculi, has been introduced by Robin Milner to unify the various emerging disciplines of interactive behaviour. In this paper action calculi is used as an abstraction of interactive systems and information flow security properties of such systems are studied. At first an information flow analysis for static action calculi is presented to predict how data will flow both along and inside actions and its correctness is proved;Next basing on the result of the analysis information security properties of both static and dynamic action calculi are discussed;Finally a general relationship are established between the static notation of information flow security and the dynamic one. © IFIP International Federation for Information Processing 2005.

关键词： Interactive computer systems

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An integration of cotraining and KNN for LPU problem

An integration of cotraining and KNN for LPU problem

引用

2nd Indian International Conference on Artificial Intelligence, IICAI 2005

作者： Xin, RuiMing Zuo, WanLi Yang, Ping Key Laboratory of Symbol Computation and Knowledge Engineering College of Computer Science and Technology JiLin University Changchun 130012 China

ISBN: (纸本)0972741216

Under the framework of LPU (learning from positive data and unlabeled data), this paper originally proposes a three-step algorithm. First, Co-Training is employed for filtering out the "suspect positive" data from the unlabeled dataset U. If CoTraining filter out the most of positive data mixed in U, the remainder of U can be viewed as a negative set with a little noise. Second, a constrained KNN approach attempts to pick out the positive data from "suspect positive" dataset which is produced in first step. Those data picked out can be supplied to positive dataset P. Finally, a linear SVM will learn from both the purified U as negative and the expanded P as positive. Because of the algorithm's characteristic of automatic expanding positive dataset, the proposed algorithm especially performs well in situations where given positive dataset P is insufficient. A comprehensive experiment proves that our algorithm is preferable to the existing ones. Copyright © IICAI 2005.

关键词： Artificial intelligence

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Noise suppression of fluorescein angiogram sequences using bilateral filter

Noise suppression of fluorescein angiogram sequences using b...

引用

International Conference on Machine Learning and Cybernetics, ICMLC 2005

作者： Guo, Xiao-Xin Lu, Yi-Nan Xu, Zhi-Wen Liu, Zhan-Hui Wang, Yun-Xiao Pang, Yun-Jie Key Laboratory of Symbol Computation and Knowledge Engineering Jilin University Ministry of Education Qianjin Street 2699 Changchun 130012 China

ISBN: (纸本)078039092X

In this paper, a relatively flexible filter called extended bilateral filter is proposed, by which some particular filters can be designed via selecting an appropriate pixel of interest (POI) and defining a kernel for the filter according to some specified requirements. Based on the filter, a fluorescein-angiogram-oriented filter, high-intensity preserving (HIP) filter is introduced to solve the problems of high-intensity preservation when denoising. The results of the experiments show that the HIP filter has the ability of noise suppression, and the ability of high-intensity preservation, which can keep the intensities of bright pixels from degrading via distributing the weights adaptively according to the location and the intensity of each pixel. © 2005 IEEE.

关键词： Image processing

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An application of Fourier-Mellin transform in image registration

An application of Fourier-Mellin transform in image registra...

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Fifth International Conference on Computer and Information Technology, CIT 2005

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

Fourier-Mellin transform (FMT) is frequently used in content-based image retrieval and digital image watermarking. This paper extends the application of FMT into image registration and proposes an improved registration algorithm based on FMT for the alignment of images differing in translation, rotation angle, and uniform scale factor. The proposed algorithm can eliminate the conversion from Cartesian to log-polar coordinates, avoid the process of interpolation required in the conversion, and obtain a more significant improvement than the conventional method using cross-correlation. Experiments show that the algorithm is accurate and robust regardless of white noise. © 2005 IEEE.

关键词： Fourier transforms

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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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