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International conference on Computational Science and Its Applications (ICCSA 2005)

作者： Lu, XL Zhejiang Univ Finance & Econ Sch Informat Technol Hangzhou 310012 Peoples R China

ISBN: (纸本)3540258620

The GIS plays a vital role in public health information visualization for public health information management, broadcasting, data management, statistical analysis, and decision supporting. This paper described the elementary requirement and the essential technology for public health information visualization and proposed a framework of the unified public health information visualization platform based on the Web GIS and visualization technology. The system framework adopted multi-tier system infrastructure that consist the sever tier and the front tier. In the server tier, the J2EE based architecture was adopted to construct a distrusted system infrastructure. In the front tier, the GIS map java applet is used to show the public health information with spatial graphical map, and the web based graphics figures such as curves, bars, maps and multi-dimensional visualization technology are used to visualize the public health information. The public health information contained the geo-referenced data, such as specific location, area code, latitude and longitude, street address, and geopolitical boundaries can be visualized with GIS distribution maps. The system infrastructure, functions, system integration, and some key technology were discussed in this paper. It would have the important practical value for constructing the visible public health information system.

关键词： Geographic information systems

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DEA-based indicator for performance improvement

DEA-based indicator for performance improvement

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3rd International conference on Active Media Technology

作者： Aoki, S Naito, Y Tsuji, H Osaka Prefecture Univ Grad Sch Engn Sakai Osaka Japan

ISBN: (纸本)0780390350

This paper concerns an active indication method on data Envelopment analysis and its experimental application. While DEA works to evaluate efficiency for the decision making unit with multiple input and output, there are still problems as follows: It is not easy (1) to view each DMU's position from bird-eye, (2) to catch the relationship between a DMU and its dominant set, and (3) to get an improvement direction from the current DMU position to the dominant set. To solve these problems, this paper clarifies the visualization procedure for indicating performance improvement and applies it to Japanese prefecture evaluation and verified in a two-input/single-output problem and a single-input/three-output problem as follows: (1) data normalization works well under the assumption that returns to scale is constant, (2) logarithmic transformation is useful in the case that the data range is strongly biased, and (3) viewpoint in three dimensional graph should be changed for confirming the direction.

关键词： human-machine system decision support system productivity data Envelopment analysis performance evaluation

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Optimization-oriented visualization of cache access behavior

Optimization-oriented visualization of cache access behavior

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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

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Anisotropic ellipsoidal smoothing of volume data

Anisotropic ellipsoidal smoothing of volume data

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VIS 05: IEEE visualization 2005, Proceedings

作者： Xue, Bai Max, Nelson Siegerist, Cristina University of California Davis Lawrence Berkeley Laboratory Univ. of CA Davis One Shields Ave. Davis CA 95616 United States

This paper describes a simple ellipsoidal filtering algorithm for identifying and smoothing cell membranes in tomographic reconstructions of electron micrographs of frozen bacteria. The flattened ellipsoids are orient... 详细信息

ISBN: (纸本)0780394623

关键词： Ellipsometry

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Hardware-accelerated glyph based visualization of major white matter tracts for analysis of brain tumors

Hardware-accelerated glyph based visualization of major whit...

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Medical Imaging 2005 conference

作者： Enders, F Iserhardt-Bauer, S Hastreiter, P Nimsky, C Ertl, T Univ Erlangen Nurnberg Dept Neurosurg Neuroctr D-8520 Erlangen Germany

ISBN: (纸本)0819457183

Visualizing diffusion tensor imaging data has recently gained increasing importance. The data is of particular interest for neurosurgeons since it allows analyzing the location and topology of major white matter tracts such as the pyramidal tract. Various approaches such as fractional anisotropy, fiber tracking and glyphs have been introduced but many of them suffer from ambiguous representations of important tract systems and the related anatomy. Furthermore, there is no information about the reliability of the presented visualization. However, this information is essential for neurosurgery. This work proposes a new approach of glyph visualization accelerated with consumer graphics hardware showing a maximum of information contained in the data. Especially, the probability of major white matter tracts can be assessed from the shape and the color of the glyphs. Integrating direct volume rendering of the underlying anatomy based on 3D texture mapping and a special hardware accelerated clipping strategy allows more comprehensive evaluation of important tract systems in the vicinity of a tumor and provides further valuable insights. Focusing on hardware acceleration wherever possible ensures high image quality and interactivity, which is essential for clinical application. Overall, the presented approach makes diagnosis and therapy planning based on diffusion tenser data more comprehensive and allows better assessment of major white matter tracts.

关键词： DTI brain tumor glyphs volume rendering consumer graphics hardware

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Attacking information visuaization lsystem usability overloading and deceiving the human

Attacking information visuaization lsystem usability overloa...

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Symposium on Usable Privacy and Security, SOUPS 2005

作者： Conti, Gregory Ahamad, Mustaque Stasko, John Georgia Institute of Technology College of Computing United States

ISBN: (纸本)1595931783

Information visualization is an effective way to easily comprehend large amounts of data. For such systems to be truly effective, the information visualization designer must be aware of the ways in which their system may be manipulated and protect their users from attack. In addition, users should be aware of potential attacks in order to minimize or negate their effect. These attacks target the information visualization system as well as the perceptual, cognitive and motor capabilities of human end users. To identify and help counter these attacks we present a framework for information visualization system security analysis, a taxonomy of visualization attacks and technology independent principles for countering malicious visualizations. These themes are illustrated with case studies and working examples from the network security visualization domain, but are widely applicable to virtually any information visualization system.

关键词： visualization

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visualization of Logic analysis of Phylogenetic Profiles (LAPP)

Visualization of Logic Analysis of Phylogenetic Profiles (LA...

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2005 IEEE Computational Systems Bioinformatics conference, Workshops and Poster Abstracts

作者： Robbins, Kay A. Zhao, Li Department of Computer Science Cajal Neuroscience Research Institute University of Texas San Antonio Department of Computer Science University of Texas San Antonio

ISBN: (纸本)0769524427

Recently Bowers et al. [1] analyzed triplet logic relationships among 4873 Clusters of Orthologous Groups (COGS) from 67 fully sequenced organisms by calculating how well logic relationships between proteins a and b predicted the presence or absence of protein c (the uncertainty). The log of the normalized uncertainty distribution follows an approximately linear relationship for uncertainties in the interval [0.1, 0.9]. Using fitted parameters of this relationship as a characterization, we develop four types of visual analysis for LAPP data: distributions of uncertainty over logical relation type, distributions of uncertainty over functional categories, relationships of uncertainty of the overall population to known network relationships of a particular organism, and relationships of uncertainty distributions to groups obtained by standard clustering techniques. The purpose of this study is two-fold: to better understand the implications of uncertainty predictions for automatic protein network generation and to create new visualization tools for looking at this type of data. © 2005 IEEE.

关键词： Formal logic

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Phase-based visualization and analysis of Java programs

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SCIENCE OF COMPUTER PROGRAMMING 2006年第1-2期59卷 64-81页

作者： Nagpurkar, P Krintz, C Univ Calif Santa Barbara Dept Comp Sci Santa Barbara CA 93106 USA

Extant Java Virtual Machines (JVMs) apply dynamic compiler optimizations adaptively, based on the partial execution of the program, with the goal of improving performance. Understanding and characterizing program behavior is of vital importance to such systems. Recent research, primarily in the area of computer architecture, has identified potential optimization opportunities in the repeating patterns in the time-varying behavior of programs. In view of this, we believe that by considering time-varying, i.e., phase, behavior in Java programs, adaptive JVMs can enable performance that exceeds current levels. To enable analysis and visualization of phase behavior in Java programs and to facilitate optimization development, we have implemented a freely available, offline, phase analysis framework within the IBM Jikes Research Virtual Machine (JikesRVM) for Java. The framework couples existing techniques into a unifying set of tools for data collection, processing, and analysis of dynamic phase behavior in Java programs. The framework enables optimization developers to significantly reduce analysis time and to target adaptive optimization to parts of the code that will recur with sufficient regularity. We use the framework to evaluate phase behavior in the SpecJVM benchmark suite and discuss optimizations that are enabled by the framework. (c) 2005 Elsevier B.V. All rights reserved.

关键词： program phases program behaviour visualization program analysis Java

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Using workflow business process tools in simulation modeling

Using workflow business process tools in simulation modeling

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2005 Winter Simulation conference (WSC 05)

作者： Everton, JG Stafford, RD Brookes Automat Salt Lake City UT 84116 USA

ISBN: (纸本)0780395190

This article will present several model automation strategies used to improve the modeling operations such as data maintenance, model analysis and model visualization. There are several new products that have emerged in academics and industry that help reduce the costs of simulation and provide a solution that obtains more ROI from a new and/or existing simulation model. In addition these modeling techniques provide the capability to make models an operational component of a manufacturing system. As an operational component, models can provide planned work schedules, prediction estimates, and an operational decision tool that engineers and managers can used in making better operational decisions.

关键词： Administrative data processing

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Discovering and visualizing prototypical artists by web-based co-occurrence analysis

Discovering and visualizing prototypical artists by web-base...

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6th International conference on Music Information Retrieval, ISMIR 2005

作者： Schedl, Markus Knees, Peter Widmer, Gerhard A-4040 Linz Austria A-1010 Vienna Austria

ISBN: (纸本)9780955117909

Detecting artists that can be considered as prototypes for particular genres or styles of music is an interesting task. In this paper, we present an approach that ranks artists according to their prototypicality. To calculate such a ranking, we use asymmetric similarity matrices obtained via co-occurrence analysis of artist names on web pages. We demonstrate our approach on a data set containing 224 artists from 14 genres and evaluate the results using the rank correlation between the prototypicality ranking and a ranking obtained by page counts of search queries to Google that contain artist and genre. High positive rank correlations are achieved for nearly all genres of the data set. Furthermore, we elaborate a visualization method that illustrates similarities between artists using the prototypes of all genres as reference points. On the whole, we show how to create a prototypicality ranking and use it, together with a similarity matrix, to visualize a music repository. © 2005 Queen Mary, University of London.

关键词： visualization

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