检索结果-内蒙古大学图书馆

Conference of the North American Fuzzy Information Processing Society - NAFIPS

作者： M. Makrehchi M. Kamel Pattern Analysis and Machine Intelligence Lab Department of Systems Design Engineering University of Waterloo Waterloo ONT Canada Department of Systems Design Engineering University of Waterloo Waterloo Ontario Canada

An unsupervised keyword extraction method based on corpora is proposed. After representing each document in the collection by a fuzzy set of candidate keywords, the problem is translated into finding appropriate fuzzy membership degree for each candidate. In order to determine the membership degrees, first, all terms of the vocabulary are mapped into a two-dimensional space called class-collection map by obtaining two newly proposed fuzzy measures called fuzzy significance and fuzzy relevance for each term. At the second step, the mapped terms are grouped into three categories, namely, features, keywords and stopwords that are discriminated by their contribution to the meaning of the documents. Instead of a clustering approach for grouping purpose, a fuzzy rule base is provided. The method is independent of the language and data dimensionality. It does not require the use of dictionary, thesaurus nor natural language processing.

关键词： Fuzzy sets Vocabulary Web pages Abstracts Text mining Fuzzy systems Pattern analysis Machine intelligence System analysis and design design engineering

来源：评论

学校读者我要写书评

暂无评论

Self-adjusting beat detection and prediction in music

Self-adjusting beat detection and prediction in music

引用

International Conference on Acoustics, Speech, and Signal Processing (ICASSP)

作者： R. Harper M.E. Jernigan Vision and Image Processing Lab Systems Design Engineering University of Waterloo Waterloo ONT Canada

This paper proposes a new approach to beat detection and prediction in music. Recurrent timing networks are used to detect and predict periodicities in an onset stream and are contained within nodes that compete for selection as the best beat hypothesis. Beat prediction nodes perform period self adjustment to better represent the detected music beat period. The system is tested using a variety of music from different genres and shows promise, in many cases with high correct beat detection percentages.

关键词： Multiple signal classification Timing Music Signal processing Delay Humans Intelligent networks Image processing design engineering systems engineering and theory

来源：评论

学校读者我要写书评

暂无评论

Q(/spl Lambda/)-based image thresholding

Q(/spl Lambda/)-based image thresholding

引用

Canadian Conference on Computer and Robot Vision, CRV

作者： M. Shokri H.R. Tizhoosh Pattern Analysis and Machine Intelligence Lab Systems Design Engineering University of Waterloo ONT Canada

One of the problems in image processing is finding an appropriate threshold in order to convert an image to a binary one. In this paper we introduce a new method for image thresholding. We use reinforcement learning as an effective way to find the optimal threshold. Q(Λ) is implemented as a learning algorithm to achieve more accurate results. The reinforcement agent uses objective rewards to explore/exploit the solution space. It means that there is not any experienced operator involved and the reward and punishment function must be defined for the agent. The results show that this method works successfully and can be trained for any particular application.

关键词： Learning Histograms Image processing Image converters Image segmentation Pattern analysis Machine intelligence System analysis and design design engineering systems engineering and theory

来源：评论

学校读者我要写书评

暂无评论

Reinforcement learning for parameter control of text detection in images from video sequences

Reinforcement learning for parameter control of text detecti...

引用

International Conference on Information and Communication Technologies: From Theory to Applications, ICTTA

作者： G.W. Taylor C. Wolf PAMI Lab Department of Systems Design Engineering University of Waterloo Waterloo ONT Canada Laboratoire d Informatique en Images et Systèmes dinformation INSA Lyon Villeurbanne France

This work presents a generalized framework for approaching the problem of optimizing parameters for a multistep computer vision algorithm using reinforcement learning (RL) agent. We then focus on the specific task of text detection in images taken from video sequences for semantic indexing. Employing the fuzzy ARTMAP ANN is an effective way to manage and predict large state and action spaces. Image features in the state space will allow for optimization on a per-image.

关键词： Learning Video sequences Computer vision design engineering systems engineering and theory Indexing Extrapolation Image processing Prediction algorithms Multidimensional systems

来源：评论

学校读者我要写书评

暂无评论

Reinforcement learning for parameter control of text detection in images from video sequences

Reinforcement learning for parameter control of text detecti...

引用

Proceedings - 2004 International Conference on Information and Communication Technologies: From Theory to Applications, ICTTA 2004

作者： Taylor, Graham W. Wolf, Christian PAMI Lab. Dept. of Systems Design Engineering University of Waterloo 200 University Avenue W. Waterloo Ont. N2L 3G1 Canada Lab. d'Info. en Images/Syst. d'Info. INSA de Lyon Bât. J. Verne 20 rue Albert Einstein 69621 Villeurbanne Cedex France

ISBN: (纸本)0780384822

A general framework for reinforcement learning (RL) to the parameter selection problem in multi-step image and vision-based tasks is discussed. RL is described as a computational approach to learning through interacting with the environment. The utility of the framework has been demonstrated by optimizing a set of parameters for an algorithm to detect text images taken from video sequences. It is suggested that introducing image features in the state space will allow for optimization on a per-image, rather than per-set basis.

关键词： Character recognition

来源：评论

学校读者我要写书评

暂无评论

Palmprint authentication system for civil applications

Palmprint authentication system for civil applications

引用

8th European Conference on Computer Vision, ECCV 2004 and International Workshop on Biometric Authentication, BioAW 2004

作者： Zhang, David Lu, Guangming Kong, Adams Wai-Kin Wong, Michael Biometrics Research Centre Department of Computing The Hong Kong Polytechnic University Kowloon Hong Kong Biocomputing Research Lab School of Computer Science and Engineering Harbin Institute of Technology Harbin China Department of Systems Design Engineering University of Waterloo OntarioN2L 3G1 Canada

ISBN: (纸本)3540224998

In this paper, we present a novel biometric authentication system to identify a person’s identity by his/her palmprint. In contrast to existing palmprint systems for criminal applications, the proposed system targets at the civil applications, which require identifying a person in a large database with high confidence in real-time. The system is constituted by four major components: User interface Module, Acquisition Module, Recognition Module and External Module. More than 7,000 palmprint images have been collected to test the performance of the system. The system can identify 400 palms with a low false acceptance rate, 0.02%, and a high genuine acceptance rate, 98.83%. For verification, the system can operate at a false acceptance rate, 0.017% and a false rejection rate, 0.86%. The execution time for the whole process including image collection, preprocessing, feature extraction and matching is less than 1 second. © Springer-Verlag Berlin Heidelberg 2004.

关键词： User interfaces

来源：评论

学校读者我要写书评

暂无评论

A Work Domain Analysis for Diabetes Management

引用

Proceedings of the Human Factors and Ergonomics Society Annual Meeting 2003年第12期47卷 1516 - 1520页

作者： Laura K. Thompson Janna C. L. Hickson Catherine M. Burns Advanced Interface Design Lab Systems Design Engineering University of Waterloo Waterloo Ontario Canada

This paper discusses the results of a Work Domain Analysis (WDA) applied to the management of diabetes. The goal is to develop a conceptual framework to help diabetic patients understand and manage their disease. The results of the WDA will be used to design and implement mobile and desktop information displays that will be used by the patient and their health care team. This poses additional challenges in demonstrating if and how Ecological interface design can be used to design medical information displays on various mobile devices. When applied to this medical domain, the usefulness of the WDA to the design of medical information displays becomes restricted because of the complex, interconnected processes involved and the limited amount of sensor data available. Alternatively, the Work Domain representation can be used as a teaching resource or used to define requirements for future monitoring technologies.

关键词：

来源：评论

学校读者我要写书评

暂无评论

Ecological interface design in Aviation Domains: Work Domain Analysis of Automated Collision Detection and Avoidance

引用

Proceedings of the Human Factors and Ergonomics Society Annual Meeting 2003年第1期47卷 119 - 123页

作者： Danny Ho Catherine M. Burns Advanced Interface Design Laboratory Systems Design Engineering University of Waterloo Waterloo Canada

This paper describes Work Domain Analysis (WDA) applied to the domain of automated midair collision detection and avoidance as a first step in the design of improved ecological interfaces for automated traffic alerting displays. Three abstraction hierarchies (AH) modelling the aircraft, collision environment, and a traffic alerting system are presented, and the challenges of adapting the AH to enhanced displays will be examined. It will be shown that WDA is a feasible framework for establishing information requirements of flight and automated collision dynamics. Ecological interface design (EID) can then be applied to develop displays that invoke a greater trust in the automation.

关键词：

来源：评论

学校读者我要写书评

暂无评论

A Methodology for Integrating Cognitive engineering into Information System Analysis and design

引用

Proceedings of the Human Factors and Ergonomics Society Annual Meeting 2003年第3期47卷 498 - 502页

作者： Ying Zhou Catherine M. Bums Advanced Interface Design Laboratory Systems Design Engineering University Of Waterloo Waterloo Ontario Canada

This paper introduces a methodology for integrating Cognitive engineering into information System Analysis and design (SAD). Work Domain Analysis (WDA) in CE is used to analyze and capture a large amount data and complex relationships in a work domain. In SAD, Data Flow Diagrams (DFD) and Entity-Relationship (ER) approaches are two important tools. Based on the captured data and relationships in the WDA model, DFD method is employed to further analyze data, data processing, and their relationships from the point of data flow. On the basis of creating WDA and DFD models, Entity-Relationship analysis methods uses normalization principles to optimize table structures, create the relationships among tables, and finally to create an Entity-Relationship Diagram. By applying the integrated methodology to the SAD of a database for health information, we created a system structure diagram, a work domain model, a DFD model, and an ER model. The methodology should emphasize human factors in Information System development, enhance the reliability of SAD and database integrity, and reduce system development time. The database is based on a three-tiered client/server system architecture and running on Oracle9i.

关键词：

来源：评论

学校读者我要写书评

暂无评论

Analysis and optimization of a non-time based motion controller for a nonholonomic mobile robot

Analysis and optimization of a non-time based motion control...

引用

2003 IEEE International Symposium on Computational Intelligence in Robotics and Automation, CIRA 2003

作者： Li, Hao Yang, Simon X. Karray, Fakhri Lab. School of Engineering University of Guelph Canada Lab. Dept. of Systems Design Engineering University of Waterloo Canada

ISBN: (纸本)0780378660

In this paper, a non-time based tracking controller of a nonholonomic mobile robot is first analyzed. Non-time based motion controllers have been successfully applied to many areas such as robot motion control, multi-robot coordination, force control, robotic teleoperation and manufacturing automation. However, by the traditional non-time based motion controller many suffer from oscillations in both the linear and angular velocities when there is a large initial tracking error. In this paper, a traditional non-time based tracking controller is optimized using a genetic algorithm, which is used to generate the model parameters that could guarantee the system stability and convergence of tracking error. Simulations using a nonholonomic mobile robot model with a four degree of freedom are conducted to investigate the performance of the proposed controller. The results using the proposed model is compared to those of the conventional model. Generally the proposed model performs better than the conventional model because the genetic algorithm can provide better parameters to minimize tracking error and the oscillation. © 2003 IEEE.

关键词： Genetic algorithms

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：