检索结果-内蒙古大学图书馆

作者： Wang, Yan Qiao, Shanping Sun, Hongwei Liu, Jinglu Sch. of Info. Sci. and Engineering Jinan University Jinan 250022 China Computer Center Jinan University Jinan 250022 China School of Science Jinan University Jinan 250022 China

This article puts forward a model of Mutative Scale Chaos Genetic Algorithm. Using this model to guide the colony to evolve can improve the capability of Genetic Algorithm without changing the searching mechanism of it It is applied to optimize BP network weights and threshold value. The simulative result has proved well that this method is simple, quick and easy to program. It has the quicker astringency speed and less calculation than the old algorithm, and is an effective means of optimizing the neural network weights and threshold value.

关键词： Backpropagation

来源：评论

学校读者我要写书评

暂无评论

Wavelet-transform-based strategy for generating new Chinese fonts

Wavelet-transform-based strategy for generating new Chinese ...

引用

Proceedings of the 2003 IEEE International Symposium on Circuits and Systems

作者： Feng, Jiu-Chao Tse, Chi K. Qiu, Yuhui Sch. of Electron./Info. Engineering South China University of Technology Guangzhou 510641 China Department of Electronic Engineering Hong Kong Polytechnic University Hong Kong Hong Kong Department of Computer Science Southwest China Normal University Chongqing 400715 China

Based on the cubic B-spline curve, new Chinese fonts are generated by wavelet transforms in this paper. The outlines of Chinese fonts are first transformed into B-spline curves. Then, using wavelet transforms, the control points of each curve are decomposed into hierarchies containing the detailed features of the Chinese fonts. Using the synthesis procedure of wavelet transforms, new fonts can be generated by modifying details at selected hierarchies.

关键词： Wavelet transforms

来源：评论

学校读者我要写书评

暂无评论

A quadrature rule for the finite Hilbert transform via trapezoid type inequalities

引用

Journal of Applied Mathematics and Computing 2003年第1-2期13卷 67-84页

作者： Dragomir, N.M. Dragomir., S.S. Farrell, P.M. Baxter, G.W. Optical Technology Research Lab. School of Electrical Engineering Victoria University of Technology PO Box 14428 Melbourne City Vic. 8001 Australia Sch. of Computer Science and Math. Victoria University of Technology PO Box 14428 Melbourne City Vic. 8001 Australia ALTAMAR Networks in Melbourne Melbourne Vic. Australia

A quadrature rule for the finite Hilbert Transform via trapezoid type inequalities is obtained. Some numerical experiments for different divisions of the interval [a, b] are also presented.

关键词： Finite Hilbert transform Trapezoid inequality

来源：评论

学校读者我要写书评

暂无评论

Universal Approximation with Fuzzy ART and Fuzzy ARTMAP

Universal Approximation with Fuzzy ART and Fuzzy ARTMAP

引用

International Joint Conference on Neural Networks 2003

作者： Verzi, Stephen J. Heileman, Gregory L. Georgiopoulos, Michael Anagnostopoulos, Georgios C. Computer Science Department University of New Mexico Albuquerque NM 87131 United States Department of Electrical Engineering University of New Mexico Albuquerque NM 87131 United States Sch. of Elec. Eng./Computer Science University of Central Florida Orlando FL 32816 United States Department of Electrical Engineering Florida Institute of Technology Melbourne FL 32901 United States

A measure of success for any learning algorithm is how useful it is in a variety of learning situations. Those learning algorithms that support universal function approximation can theoretically be applied to a very large and interesting class of learning problems. Many kinds of neural network architectures have already been shown to support universal approximation. In this paper, we will provide a proof to show that Fuzzy ART augmented with a single layer of perceptrons is a universal approximator. Moreover, the Fuzzy ARTMAP neural network architecture, by itself, will be shown to be a universal approximator.

关键词： Fuzzy control

来源：评论

学校读者我要写书评

暂无评论

Occlusion detection and stereo matching in a stochastic method

Occlusion detection and stereo matching in a stochastic meth...

引用

Proceedings: 2003 International Conference on Image Processing, ICIP-2003

作者： Lee, Sang Hwa Park, Sang Yoon Cho, Nam Ik Kanatsugu, Yasuaki Park, Jong-Il Sch. of Elec. Eng./Computer Science Seoul National University Seoul Korea Republic of Object-based Broadcasting Syst. R.L. NHK Engineering Services Tokyo Japan Division of Electrical Engineering Hanyang Univ. Seoul Korea Republic of

This paper proposes a stochastic approach to estimate the occlusion and disparity fields of stereoscopic images. The fields are estimated by the Bayesian maximum a posteriori (MAP) framework and Markov random field (MRF) models. The occlusion field model is based on the stochastic observation that the probability distribution in MAP estimator is relatively unstable and uniform at occluded regions. The occlusion is explicitly modelled as MRF, and is estimated in an energy optimization method called stochastic diffusion. The detected occluded region is compensated for the re-estimated disparity field in the same stochastic diffusion and the dynamic programming approach. Experimental results show good occlusion detection and disparity estimation. These results show the novel stochastic approach is suitable for occlusion detection and disparity estimation.

关键词： Image processing

来源：评论

学校读者我要写书评

暂无评论

Simultaneous object extraction and disparity estimation using stochastic diffusion

Simultaneous object extraction and disparity estimation usin...

引用

Proceedings: 2003 International Conference on Image Processing, ICIP-2003

作者： Lee, Sang Hwa Cho, Nam Ik Kanatsugu, Yasuaki Park, Jong-Il Sch. of Elec. Eng./Computer Science Seoul National University Seoul Korea Republic of Object-based Broadcasting Syst. R.L. NHK Engineering Services Tokyo Japan Division of Electrical Engineering Hanyang Univ. Seoul Korea Republic of

This paper proposes a Bayesian Maximum A Posteriori (MAP) method to estimate disparity field and to extract objects in the stereoscopic images. The disparity and segmentation fields are modelled as the Markov random fields (MRFs), and are estimated by a stochastic approach called stochastic diffusion. The stochastic diffusion is a new energy minimization method to search for the solution fields in the MAP estimation. A clustering method utilizes the disparity field and color information to classify the regions into foreground objects or background. The line field is also included to improve the detection of the object boundaries. According to the some experiments, the proposed approach shows good performances in the foreground objects extraction even in the complex background.

关键词： Image segmentation

来源：评论

学校读者我要写书评

暂无评论

An End-to-End Multi-Path Smooth Handoff sch.me for Stream Media

An End-to-End Multi-Path Smooth Handoff Scheme for Stream Me...

引用

Proceedings of the First ACM International Workshop on Wireless Mobile Applications and Services on WLAN Hotspots, WMASH 2003

作者： Pan, Yi Lee, Meejeong Kim, Jaime Bae Suda, Tatsuya Sch. of Info. and Computer Science University of California Irvine CA 92697-3425 United States Dept. of Comp. Sci. and Engineering Ewha Womans University 11-1 Daehyun-Dong Seoul 120-750 Korea Republic of Computer Science Department California State University Northridge CA 91330 United States

ISBN: (纸本)1581137680

In the near future, wide variety of wireless networks will be merged into the Internet and allow users to continue their application with higher degree of mobility. In such environment, multimedia applications, which require smooth rate transmission, will become more popular. There are two main reasons that cause difficulties in the smooth transmission of stream media application when a user roams around the wireless mobile networks: 1) packets may get lost due to the re-routing caused by handoffs;2) due to the disparity in the amount of available bandwidth among wireless cells, handoffs may cause congestion. We propose an end-to-end multi-path transmission sch.me that provides a comprehensive solution for the smooth handoffs of stream media. In the proposed sch.me, multiple paths are acquired during the handoff period to reach a single mobile node. Multi-layer encoding technique is applied to make the stream media more adaptive to the heterogeneous network environment with different bandwidths. Protection of more important video layer through duplicated transmission is carefully designed for smooth handoff using multiple paths. The performance of the proposed multi-path handoff sch.me is evaluated and compared with existing sch.mes through extensive simulations. The simulation results show that the proposed sch.me improves the throughput and quality for stream media application during the handoff. Cost of the proposed sch.me is also carefully evaluated in terms of transmission efficiency.

关键词： Mobile telecommunication systems

来源：评论

学校读者我要写书评

暂无评论

A simulation study of TCP performance over IEEE 1394 home networks

A simulation study of TCP performance over IEEE 1394 home ne...

引用

作者： Lee, C. Jang, J. Park, E.K. Makki, S. Sch. of Interdisciplinary Comp./Eng. University of Missouri Kansas City MO 64110 United States Department of Computer Engineering DongEui University Pusan 614-714 Korea Republic of Department of Computer Science Roy. Melbourne Inst. of Technology Melbourne Vic. 3001 Australia

TCP typically offers reasonable end-to-end performance to users regardless of the bandwidth and error characteristics of particular network technology. The robustness of TCP has contributed to its success in the Internet environment. The role of communications is already well established in the office environment. With the advent of cheap, affordable broadband communications and the increasing complexity of consumer goods, it seems natural to extend the network into homes. In-home networking means a high-speed communication among the digital appliances within a home. Introduction of application over high-speed home network using TCP/IP protocol is increasing. The integrated environment of Internet and home network is demanding as well. We have validated TCP model over high-speed home network environment, investigated the throughput behavior of TCP over IEEE 1394 home networks, and evaluated a potential solution for high performance of TCP over IEEE 1394 home networks. The simulation model has produced several interesting results in the performance of TCP over IEEE 1394 home network. © 2002 Published by Elsevier science B.V.

关键词： Network protocols

来源：评论

学校读者我要写书评

暂无评论

Bayesian web document classification through optimizing association word 16th

引用

16th International Conference on Industrial and engineering Applications of Artificial Intelligence and Expert Systems, IEA/AIE 2003 Proceedings

作者： Ko, Su Jeong Choi, Jun Hyeog Lee, Jung Hyun Sch. of Comp. Sci. and Engineering Inha University Yong-hyen dong Namgu Inchon Korea Republic of Division of Computer Science Kimpo College San 14-1 Ponae-ri Wolgot-myun Kimpo Kyonggi-do Korea Republic of

ISBN: (纸本)3540404554

Previous Bayesian document classification has a problem because it does not reflect semantic relation accurately in expressing characteristic of document. In order to resolve this problem, this paper suggests Bayesian document classification method through mining and refining of association word. Apriori algorithm extracts characteristic of test document in form of association words that reflects semantic relation and it mines association words from learning documents. If association word from learning documents is mined only with Apriori algorithm, inappropriate association word is included within them. Accordingly it has disadvantage of lack of accuracy in document classification. In order to complement the disadvantage, we adopt method to refine association words through use of genetic algorithm. Naïve Bayes classifier classifies test documents based on refined association words.

关键词： Artificial intelligence

来源：评论

学校读者我要写书评

暂无评论

Rational Action in Agent Programs with Prioritized Goals 03

Rational Action in Agent Programs with Prioritized Goals

引用

Proceedings of the Second International Joint Conference on Autonomous Agents and Multiagent Systems, AAMAS 03

作者： Sardiña, Sebastian Shapiro, Steven Dept. of Computer Science University of Toronto Toronto Ont. M5S 3G4 Canada Sch. of Comp. Sci. and Engineering University of New South Wales Sydney NSW 2052 Australia

ISBN: (纸本)9781581136838

Agent theories and agent programs are two very different styles of specification of agent behavior. The former are declarative in nature, while the latter have an imperative flavor, In this paper, we combine ideas from both areas, yielding a powerful mode of agent specification that also gives the specifier a good deal of control over the complexity of the specified agent. In particular, we extend Shapiro et al.'s agent theory to handle prioritized goals and then integrate it with the IndiGolog agent programming language. The result is a new IndiGolog construct that transforms a given nondeterministic, concurrent program δ into a new program δ′ that can be described as a rational implementation of the original program, in the sense that δ′ is an implementation of δ, and furthermore, δ′ is the most rational of all implementations of 6 relative to a given set of prioritized goals and the agent's knowledge. With this construct, we can specify an agent that will attempt to achieve as many goals as possible in priority order even if the agent does not know of a plan that is guaranteed to achieve all the goals. In this case, the agent will select a plan that she thinks has the best chance of achieving the goals.

关键词： Intelligent agents

来源：评论

学校读者我要写书评

暂无评论

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案：

请选择收藏分类：

通借通还

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：