检索结果-内蒙古大学图书馆

20TH ANNUAL COMPUTER SCIENCE SYMP

作者： LIU, H HOCKNEY, D Computer and Information Science Department University of Massachusetts Dartmouth North Dartmouth MA Center for Advanced Technology in Telecommunications Polytechnic University 333 Jay Street Brooklyn NY

ISBN: (纸本)0897914724

The intrinsic complexity and the geometric nature of network topology optimization lends itself to visual human-computer interaction. We have applied techniques of scientific visualization to all the aspects of network design, and have designed graphical user interface which takes full advantage of human expertise in the context of automated design processes.

关键词： Computer networks

来源：评论

学校读者我要写书评

暂无评论

Enhanced Correlation Matrix Based visualization for Multi- and Many-objective optimization 8

Enhanced Correlation Matrix Based Visualization for Multi- a...

引用

8th IEEE Symposium Series on Computational Intelligence (IEEE SSCI)

作者： Ibrahim, Amin Rahnamayan, Shahryar Martin, Miguel Vargas Deb, Kalyanmoy Univ Ontario Inst Technol Fac Elect Comp & Software Engn Oshawa ON Canada Univ Ontario Inst Technol Fac Business & Informat Technol Oshawa ON Canada Michigan State Univ Fac Elect Comp & Comp Engn E Lansing MI 48824 USA

ISBN: (纸本)9781538692769

visualization of an approximate solution set in multi- and many-objective optimization is a crucial component of the optimization process. To date, the focus of many of the visualization techniques is illustration of the distribution and converaence of solutions set without making any visual connection between the decision variables and solutions set. This paper proposes simple correlation-based visualization scheme called Enhanced Correlation Matrix plot (ECM) capable of showing the relationship among decision variables and objective values. The ECM plot can provide visual correlation information between each decision variable and objective functions as well as objective-wise relationship for different regions of the approximated solution set. Moreover, it can provide visual distribution of solutions along each objective. The efficiency of the proposed method is demonstrated on three widely used two- to eight objective- benchmark problems and two real-world problems with 6 and 17 decision variables. The experimental results show that the proposed ECM plot can provide essential information pertaining to relationships among objective functions and objective-to-decision variables.

关键词： visualization Correlation matrix Pareto front Many-objective optimization ECM plot

来源：评论

学校读者我要写书评

暂无评论

optimization of basis functions for both reconstruction and visualization

引用

DISCRETE APPLIED MATHEMATICS 2004年第1-3期139卷 95-111页

作者： Garduño, E Herman, GT CUNY Grad Ctr Dept Comp Sci New York NY 10016 USA

Algebraic reconstruction techniques for the reconstruction of distributions from projections have yielded improvements in diverse fields such as medical imaging and electron microscopy. An important property of these methods is that they allow the use of various basis functions. Recently spherically symmetric functions (blobs) have been introduced as efficacious basis functions for reconstruction. However, basis functions whose parameters were found to be appropriate for use in reconstruction are not necessarily good for visualization. We propose a method of selecting blob parameters for both reconstruction and visualization. (C) 2003 Elsevier B.V. All rights reserved.

关键词： reconstruction from projections Kaiser-Bessel functions noncubie grids implicit surfaces visualization

来源：评论

学校读者我要写书评

暂无评论

optimization-oriented visualization of cache access behavior

Optimization-oriented visualization of cache access behavior

引用

5th International Conference on Computational Science (ICCS 2005)

作者： Tao, J Karl, W Univ Karlsruhe TH Inst Rechnerentwurf & Fehlertoleranz D-76128 Karlsruhe Germany

ISBN: (纸本)3540260439

Cache performance is regarded as a critical issue that significantly influences the overall performance of a computer system. Hence, optimization with respect to cache behavior forms an important topic in both research and commercial areas. This work aims at helping the user in the task of cache behavior analysis with a comprehensive visualization tool. The resulted cache visualizer is capable of presenting the various aspects of cache accesses, and shows the performance data in a high-level, user-readable way. More specially, it directly leads the user to the data structures where excessive cache misses occur. It then further depicts the reason of theses misses. In addition, it helps the user to decide important parameters concerning some optimization techniques, e.g. padding stride and size of cache blocks. Examples of initial optimization based on the visualizer have proven the feasibility of this visualization tool.

关键词： visualization

来源：评论

学校读者我要写书评

暂无评论

Using wavefront tracing for the visualization and optimization of progressive lenses

引用

COMPUTER GRAPHICS FORUM 1998年第3期17卷 C255-+页

作者： Loos, J Slusallek, P Seidel, HP Univ Erlangen Nurnberg Comp Graph Grp D-8520 Erlangen Germany

Progressive addition lenses are a relatively new approach to compensate for defects of the human visual system. While traditional spectacles use rotationally symmetric lenses, progressive lenses require the specification of free-form surfaces. This poses difficult problems for the optimal design and its visual evaluation. This paper presents two new techniques for the visualization of optical systems and the optimization of progressive lenses. Both are based on the same wavefront tracing approach to accurately evaluate the refraction properties of complex optical systems. We use the results of wavefront tracing for continuously, re-focusing the eye during rendering. Together with distribution ray tracing, this yields high-quality images Chat accurately simulate the visual quality of an optical system. The design of progressive lenses is difficult due to the trade-off between the desired properties of the lens and unavoidable optical errors, such as astigmatism and distortions. We use wavefront tracing to derive an accurate error functional describing the desired properties and the optical error across a lens. Minimizing this error yields optimal free-form lens surfaces. While the basic approach is much more general, in this paper we describe its application to the particular problem of designing and evaluating progressive lenses and demonstrate the benefits of the new approach with several example images.

关键词： Halftoning Bandpass pyramid Importance function Limited resource rendering Non-photorealistic rendering Traditional halftoning Drawing primitive Multi-resolution representations

来源：评论

学校读者我要写书评

暂无评论

A joint formulation of visualization and numerical optimization for engineering design optimization

A joint formulation of visualization and numerical optimizat...

引用

8th Symposium on Multidisciplinary Analysis and optimization 2000

作者： Hernandez, S. Fontan, A.N. School of Civil Engineering University of La Coruna Campus de Elvina Spain

In this paper some considerations about why design optimization techniques are so scarcely used in industry are first summarized. Then it is pointed out that a closer approach to the point of view of design engineers is required to overcome this problem. In this regard a formulation linking advanced visualization and design optimization is presented and two examples, one of size optimization of a vehicle body, and another one of shape optimization of a connecting rod are included to justify the advantages of this methodology. © 2000by S. Hernandez & A.N. Fontan.

关键词： Shape optimization

来源：评论

学校读者我要写书评

暂无评论

Vorticity based flow analysis and visualization for pelton turbine design optimization 04

Vorticity based flow analysis and visualization for pelton t...

引用

IEEE visualization 2004 Conference

作者： Sadlo, F Peikert, R Parkinson, E ETH Zurich Switzerland

ISBN: (纸本)0780387880

Vorticity is the quantity used to describe the creation, transformation and extinction of vortices. It is present not only in vortices but also in shear flow. Especially in ducted flows, most of the overall vorticity is usually contained in the boundary layer. When a vortex develops from the boundary layer, this can be described by transport of vorticity. For a better understanding of a flow it is therefore of interest to examine vorticity in all of its different roles. The goal of this application study was not primarily the visualization of vortices but of vorticity distribution and its role in vortex phenomena. The underlying industry at case is a design optimization for a Pelton turbine. An important industrial objective is to improve the quality of the water jets driving the runner. Jet quality is affected mostly by vortices originating in the distributor ring. For a better understanding of this interrelation, it is crucial to not only visualize these vortices but also to analyze the mechanisms of their creation. We used various techniques for the visualization of vorticity, including field lines and modified isosurfaces. For field line based visualization, we extended the image-guided streamline placement algorithm of Turk and Banks to data-guided field line placement on three-dimensional unstructured grids.

关键词： flow visualization feature extraction line placement

来源：评论

学校读者我要写书评

暂无评论

Toward the optimization of an e-Tongue System Using Information visualization: A Case Study with Perylene Tetracarboxylic Derivative Films in the Sensing Units

引用

LANGMUIR 2012年第1期28卷 1029-1040页

作者： Volpati, Diogo Aoki, Pedro H. B. Dantas, Cleber A. R. Paulovich, Fernando V. de Oliveira, Maria Cristina F. Oliveira, Osvaldo N., Jr. Riul, Antonio, Jr. Aroca, Ricardo F. Constantino, Carlos J. L. UNESP Univ Estadual Paulista Fac Ciencias & Tecnol BR-19060900 Presidente Prudente SP Brazil Univ Sao Paulo Inst Ciencias Matemat & Comp BR-13560970 Sao Carlos SP Brazil Univ Sao Paulo Inst Fis Sao Carlos BR-13560970 Sao Carlos SP Brazil Univ Fed Sao Carlos BR-18052780 Campus Sorocaba SP Brazil Univ Windsor Mat & Surface Sci Grp Windsor ON N9B 3P4 Canada

The wide variety of molecular architectures used in sensors and biosensors and the large amount of data generated with some principles of detection have motivated the use of computational methods, such as information visualization techniques, not only to handle the data but also to optimize sensing performance. In this study, we combine projection techniques with micro-Raman scattering and atomic force microscopy (AFM) to address critical issues related to practical applications of electronic tongues (e-tongues) based on impedance spectroscopy. Experimentally, we used sensing units made with thin films of a perylene derivative (AzoPTCD acronym), coating Pt interdigitated electrodes, to detect CuCl(2) (Cu(2+)), methylene blue (MB), and saccharose in aqueous solutions, which were selected due to their distinct molecular sizes and ionic character in solution. The AzoPTCD films were deposited from monolayers to 120 nm via Langmuir-Blodgett (LB) and physical vapor deposition (PVD) techniques. Because the main aspects investigated were how the interdigitated electrodes are coated by thin films (architecture on e-tongue) and the film thickness, we decided to employ the same material for all sensing units. The capacitance data were projected into a 2D plot using the force scheme method, from which we could infer that at low analyte concentrations the electrical response of the units was determined by the film thickness. Concentrations at 10 mu M or higher could be distinguished with thinner films tens of nanometers at most-which could withstand the impedance measurements, and without causing significant changes in the Raman signal for the AzoPTCD film-forming molecules. The sensitivity to the analytes appears to be related to adsorption on the film surface, as inferred from Raman spectroscopy data using MB as analyte and from the multidimensional projections. The analysis of the results presented may serve as a new route to select materials and molecular architectures for n

关键词： film thickness ARCHITECTURE Perylene sensing unit Response Unit information visualization Biosensors Sensors MACHINE BASIN Case studies thin films Characteristic impedance

来源：评论

学校读者我要写书评

暂无评论

Research on Enhancing Classification and Coreset Selection with KNN Based Framework

Research on Enhancing Classification and Coreset Selection w...

引用

International Conference on Artificial Intelligence in Information and Communication (ICAIIC)

作者： Jun Yeong Lee Dong Seog Han Sin Jae Kang School of Electronic and Electrical Engineering Kyungpook National University Daegu Republic of Korea

ISBN: (数字)9798331507022

ISBN: (纸本)9798331507039

In the field of machine learning, effective learning strategies play a critical role in enhancing model performance and efficiency. This paper utilizes Shapley entropy values to increase inter-class distances to enhance classification tasks. The proposed framework integrates these values with adversarial techniques and extra-intra object distance minimization strategies inspired by adversarial optimization and object distance refinement techniques. Shapley entropy provides a nuanced way of addressing the limitations of recent OoD(out of distribution) loss functions, which primarily rely on adversarial methods but struggle with complex inter-cluster relationships. By leveraging a knn(k-nearest neighbor) based approach, Shapley entropy effectively defines multiple inter-cluster relationships, improving class separation and intra-class cohesion in a more robust and scalable manner. Moreover, the shapley entropy demonstrates superior efficiency by simultaneously addressing coreset selection and enhancing classification performance, making it applicable across both tasks seamlessly. Experimental results include class-wise accuracy, t-SNE visualizations validated on CIFAR-10, and the application of active learning.

关键词： Deep learning visualization Accuracy Active learning Organizations Nearest neighbor methods Minimization Entropy optimization

来源：评论

学校读者我要写书评

暂无评论

optimization and design space visualization applied to early conceptual design of compound helicopters

Optimization and design space visualization applied to early...

引用

52nd AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics and Materials Conference

作者： Sartorius, Sky Technische Universität München Institute for Aircraft Design Boltzmannstrasse 15 85747 Garching Germany

ISBN: (纸本)9781600869518

Tools and techniques for conceptual design of rotorcraft are uncommon compared to what is available for sizing fixed-wing airplanes. With the goal of being able to easily create a sized helicopter or lift- and thrust-compounding helicopter within a short timeframe after initial exposure to a specification or request for proposals, a software suite was written to facilitate optimization and design space exploration in the conceptual design phase. The nature of the design problem for helicopters, and especially compound helicopters, requires tools for optimization and visualization of a multi-dimensional problem with many objectives and constraints. The software employs built-in optimization for both global and local search using established algorithms, both non-deterministic and deterministic. To let the designer visually explore the design space, novel capabilities are also included that combine well-known techniques for visualizing multi- and hyper-dimensional design domains into a single matrix of linked plots that allows the visualization of the effect of multiple decision variables on many constraints and design objectives. Overall, the software developed proved useful for conceptual sizing of compound helicopters, and the visualization techniques developed for this work proved great potential for a variety of optimization tasks in other disciplines. Copyright © 2011 by the American Institute of Aeronautics and Astronautics, Inc.

关键词： Compound helicopters

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：