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检索条件"任意字段=Conference on Visualization and Data Analysis 2002"

共 316 条记录，以下是11-20 订阅

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Glyph-based generic network visualization

Glyph-based generic network visualization

引用

conference on visualization and data analysis 2002

作者： Erbacher, RF SUNY Albany Dept Comp Sci Albany NY 12222 USA

ISBN: (纸本)0819444057

Network managers and system administrators have an enormous task set before them in this day of growing network usage. This is particularly true of e-commerce companies and others dependent on a computer network for their livelihood. Network managers and system administrators must monitor activity for intrusions and misuse while at the same time monitoring performance of the network. In this paper, we describe our visualization techniques for assisting in the monitoring of networks for both of these tasks. The goal of these visualization techniques is to integrate the visual representation of both network performance/usage as well as data relevant to intrusion detection. The main difficulties arise from the difference in the intrinsic data and layout needs of each of these tasks. Glyph based techniques are additionally used to indicate the representative values of the necessary data parameters over time. Additionally, our techniques are geared towards providing an environment that can be used continuously for constant real-time monitoring of the network environment.

关键词： information visualization computer networks traffic monitoring intrusion detection

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Regular spatial separation for exploratory visualization

Regular spatial separation for exploratory visualization

引用

conference on visualization and data analysis 2002

作者： Roberts, JC Univ Kent Comp Lab Canterbury Kent England

ISBN: (纸本)0819444057

There are many well-used techniques in exploratory visualization that select, filter or highlight particular aspects of the visualization to gain a better understanding of the structure and makeup of the underlying information. Indeed, distortion techniques have been developed that,deform and move different spatial elements of the representation allowing the user to view and investigate internal aspects of the visualization. But this distortion may cause the user to misunderstand the spatial structure and context of surrounding information and works better when the user knows what feature they are looking for. We believe that regular separation techniques, that separate and generate space round features or objects of interest clarifies the visual representations, are underused and that their use should be encouraged. We describe related research and literature, present some new methods, and classify the realizations by what type of separation is used and what information is being separated.

关键词： visualization separation displacement distortion exploratory visualization multiform

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Financial reminiscences: An example of art based on information visualization in finance 6

Financial reminiscences: An example of art based on informat...

引用

6th International conference on Information Visualisation

作者： Saito, Y INES Corporation Japan

ISBN: (纸本)0769516564

Useful techniques for information visualization allow engineers or analysts to produce works of art. A work entitled "Financial Reminiscences" is an example of such works. This work has been produced using a visualization technique for financial analysis. This technique is not only a tool for generating images. It is closely related to the information visualized in the work. Thus, the audience needs to understand the visualization technique and then to analyze the information.

关键词： Art Cellular phones data visualization Economic forecasting Finance Frequency Image generation Information analysis Portfolios Subspace constraints

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Distributed sound for volumes - data analysis using distributed visualization and sonification

Distributed sound for volumes - Data analysis using distribu...

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conference on visualization and data analysis 2002

作者： Minghim, R Salvador, VCL Freitas, BS Oliveira, ACF Nonato, LG Univ Sao Paulo Inst Ciencias Matemat & Comp BR-13560970 Sao Carlos SP Brazil

ISBN: (纸本)0819444057

A number of different resources and a body of new technology has been empowering visualization applications. At the same time, supportive and mostly experimental techniques aimed at increasing the representation power and interpretability of complex data, such as sonification, are beginning to establish a foundation that can be used in real applications. This work presents an architecture and a corresponding prototype implementation of a visualization system that incorporates some of these research and technological aspects, such as visualization on the web, distributed visualization, and sonification. The current development of the prototype is presented, as well as its implications and planned improvements.

关键词： distributed visualization sonification

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visualization of high-density 3D graphs using non-linear visual space transformations

Visualization of high-density 3D graphs using non-linear vis...

引用

conference on visualization and data analysis 2002

作者： Hao, MC Dayal, U Garg, P Machiraju, V Hewlett Packard Res Labs Palo Alto CA 94304 USA

ISBN: (纸本)0819444057

The real world data distribution is seldom uniform. Clutter and sparsity commonly occur in visualization. Often, clutter results in overplotting, in which certain data items are not visible because other data items occlude them. Sparsity results in the inefficient use of the available display space. Common mechanisms to overcome this include reducing the amount of information displayed or using multiple representations with a varying amount of detail. This paper describes our experiments on "Non-Linear Visual Space Transformations" (NLVST). NLVST encompasses several innovative techniques: (1) employing a histogram for calculating the density of data distribution;(2) mapping the raw data values to a non-linear scale for stretching a high-density area;(3) tightening the sparse area to save the display space;(4) employing different color ranges of values on a non-linear scale according to the local density. We have applied NLVST to several web applications: market basket analysis, transactions observation, and IT search behavior analysis.

关键词： visualization non-linear visual space transformation high density stretch distance color

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TugOfWar:: A simple 2D web visualization technique

<i>TugOfWar</i>:: A simple 2D web visualization technique

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conference on visualization and data analysis 2002

作者： El-Kwae, EA Tsay, LS Univ N Carolina Charlotte NC 28223 USA

ISBN: (纸本)0819444057

As the World Wide Web (WWW) continues to grow at an enormous rate, finding useful information on the WWW is becoming more and more tedious and time consuming. This paper introduces a new visualization technique called TugOfWar for the visualization of search results on the WWW. TugOfWar provides a simple, 2-Dimensional (M), and interactive graphical user interface to help the users comprehend and filter such results. The TugOfWar interface visuall displays the relationship between the query keywords and the displayed documents (inter-document relationships) and the relevance of the query keywords to each individual document (intra-document relationships). Operations on the interface such as zoom in/out, add/remove keywords, or display details of a document increase the power of visualization. A large number of documents maybe displayed on one screen, which allows users to judge document relevance more quickly and accurately rather than by linearly flipping through result pages. The TugOfWar technique i intended to provide a global overview of the search results and may be combined with other visualization techniques to provide more details about the contents of a specific document. Several examples are used to illustrate the advantages of the TugOfWar approach.

关键词： WWW visualization visualization of large data set graphical user interface (GUI) design

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An interactive parallel visualization framework for distributed data

An interactive parallel visualization framework for distribu...

引用

conference on visualization and data analysis 2002

作者： Perrine, KA Jones, DR Hochschild, P Swetz, RA Battelle Mem Inst Pacific NW Natl Labs Richland WA 99352 USA

ISBN: (纸本)0819444057

A framework for parallel visualization at Pacific Northwest National Laboratory (PNNL) is being developed that utilizes the IBM Scaleable Graphics Engine (SGE) and IBM SP parallel computers. Parallel visualization resources are discussed, including display technologies, data handling, rendering, and interactivity. Several of these resources have been developed, while others are under development. These framework resources will be utilized by programmers in custom parallel visualization applications.

关键词： parallel visualization distributed data parallel frame buffer graphics

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Roget2000: A 2D hyperbolic tree visualization of Roget's thesaurus

Roget2000: A 2D hyperbolic tree visualization of Roget's the...

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conference on visualization and data analysis 2002

作者： Baumgartner, JL Waugh, TA Indiana Univ Sch Lib & Informat Sci Bloomington IN 47405 USA

ISBN: (纸本)0819444057

Thesauri, such as Roget's Thesaurus, show the semantic relationships among terms and concepts. Understanding these relationships can lead to a greater understanding of linguistic structure and could be applied to creating more efficient natural-language recognition and processing programs. A general assumption is that focus and context displays of hyperbolic trees accelerate browsing ability over conventional trees. It is believed that allowing the user to visually browse the thesaurus will be more effective than keyword searching, especially when the terms in the thesaurus are not known in advance. The visualization can also potentially provide insight into semantic structure of terms. The novelty of this visualization lay in its implementation of various direct manipulation functions, tightly coupled windows, and how data is read into visualization. The direct manipulation functions allow the user to customize the appearance of the tree, to view the density of terms associated with particular concepts, and to view the thesaurus entries associated with each term. Input data is in an XML file format. The extensibility and ability to model complex hierarchies made XML a convenient choice. The object-oriented design of the code allows for displaying virtually any hierarchical data if it is in the XML format.

关键词： hyperbolic tree Roget's thesaurus direct manipulation XML

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Contour-based progressive coding of cutting plane data

Contour-based progressive coding of cutting plane data

引用

conference on visualization and data analysis 2002

作者： Guan, Y Moorhead, RJ Mississippi State Univ NSF Engn Res Ctr Starkville MS 39759 USA

ISBN: (纸本)0819444057

We present an efficient algorithm for progressive coding of cutting plane data extracted from large-scale computational field simulation (CFS) datasets. Since cutting planes are frequently used for examination of 3D simulation results, efficient compression of their geometry, topography, and the associated field data is important for good visualization performance, especially when the simulation is running on a geographically remote server or the simulation results are stored in a remote repository. Progressive coding is ideal for exploratory visualization since the data can be presented naturally starting with a coarse view and progressing down to the detail. In our algorithm, each cutting plane is reduced at the server to a set of triangle strips containing contour lines. On the local visualization machine (the client), the original surface is reconstructed by triangulating the space between the triangle strips. The more contour lines used, the higher the reconstruction accuracy obtained. It can quickly show an area of interest without modifying that section of the original triangle mesh. In generating the data to be sent to the client, the algorithm can smoothly trade-off computation and the accuracy of the representation by altering the cutting plane generation procedure or by adjusting the accuracy of the data.

关键词： visualization Signal to noise ratio Phase modulation Visual compression Chromium Computer simulations Reconstruction algorithms Algorithm development Transform theory data centers

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Combining physical and semantical navigation in three-dimensional information visualization

Combining physical and semantical navigation in three-dimens...

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conference on visualization and data analysis 2002

作者： dos Santos, CR Gros, P Abel, P Inst Eurecom F-06904 Sophia Antipolis France

ISBN: (纸本)0819444057

The field of information visualization is in permanent expansion and new and innovative ways of visualizing large volumes of abstract data are being developed. The use of virtual metaphoric worlds is one of them, but these visualizations per se are only truly useful if the user is provided a means of exploring the information. A common way of data exploration is navigation. In the case of three-dimensional (3D) information visualization, navigation as a means of information exploration attains even more importance due to the extra exploitable dimension. Nonetheless, navigation in large virtual worlds is still a difficult task and not only for naive users, there is anecdotal evidence that electronic navigation is considered difficult even by the virtual worlds builders. Wayfinding, "knowing where to go", is sometimes perceived as the hardest part;other times, it is the locomotion, "getting there", that is found difficult. This paper presents a navigation strategy that attempts to solve these problems by combining physical/metaphoric navigation with semantic navigation. We present a framework for navigating large virtual worlds that relies heavily on the use of visual metaphors. The combination of physical and semantic navigation embedded in the metaphor components allows for a powerful data exploration and electronic navigation mechanism.

关键词： navigation 3D information visualization visual metaphors semantical navigation metaphoraware navigation

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