Now showing items 39-53 of 53

    • Scalable Detection of Spatiotemporal Encounters in Historical Movement Data 

      Bak, Peter; Marder, Mattias; Harary, Sivan; Yaeli, Avi; Ship, Harold J. (The Eurographics Association and Blackwell Publishing Ltd., 2012)
      The widespread adoption of location-aware devices is resulting in the generation of large amounts of spatiotemporal movement data, collected and stored in digital repositories. This forms a fertile ground for domain experts ...
    • Semantic Wordification of Document Collections 

      Paulovich, Fernando V.; Toledo, Franklina M. B.; Telles, Guilherme P.; Minghim, Rosane; Nonato, Luis Gustavo (The Eurographics Association and Blackwell Publishing Ltd., 2012)
      Word clouds have become one of the most widely accepted visual resources for document analysis and visualization, motivating the development of several methods for building layouts of keywords extracted from textual data. ...
    • Semi-Supervised Dimensionality Reduction based on Partial Least Squares for Visual Analysis of High Dimensional Data 

      Paiva, Jose Gustavo S.; Schwartz, William Robson; Pedrini, Helio; Minghim, Rosane (The Eurographics Association and Blackwell Publishing Ltd., 2012)
      Dimensionality reduction is employed for visual data analysis as a way to obtaining reduced spaces for high dimensional data or to mapping data directly into 2D or 3D spaces. Although techniques have evolved to improve ...
    • StratomeX: Visual Analysis of Large-Scale Heterogeneous Genomics Data for Cancer Subtype Characterization 

      Lex, Alexander; Streit, Marc; Schulz, Hans-Joerg; Partl, Christian; Schmalstieg, Dieter; Park, Peter J.; Gehlenborg, Nils (The Eurographics Association and Blackwell Publishing Ltd., 2012)
      Identification and characterization of cancer subtypes are important areas of research that are based on the integrated analysis of multiple heterogeneous genomics datasets. Since there are no tools supporting this process, ...
    • A Taxonomy of Visual Cluster Separation Factors 

      Sedlmair, Michael; Tatu, Andrada; Munzner, Tamara; Tory, Melanie (The Eurographics Association and Blackwell Publishing Ltd., 2012)
      We provide two contributions, a taxonomy of visual cluster separation factors in scatterplots, and an in-depth qualitative evaluation of two recently proposed and validated separation measures. We initially intended to use ...
    • Tracing Tuples Across Dimensions: A Comparison of Scatterplots and Parallel Coordinate Plots 

      Kuang, Xiaole; Zhang, Haimo; Zhao, Shengdong; McGuffin, Michael J. (The Eurographics Association and Blackwell Publishing Ltd., 2012)
      One of the fundamental tasks for analytic activity is retrieving (i.e., reading) the value of a particular quantity in an information visualization. However, few previous studies have compared user performance in such value ...
    • Travel-Route-Centered Metro Map Layout and Annotation 

      Wu, Hsiang-Yun; Takahashi, Shigeo; Lin, Chun-Cheng; Yen, Hsu-Chun (The Eurographics Association and Blackwell Publishing Ltd., 2012)
      When providing travel guides for a specific route in a metro network, we often place the route around the center of the map and annotate stations on the route with thumbnail photographs. Nonetheless, existing methods do ...
    • Using Signposts for Navigation in Large Graphs 

      May, Thorsten; Steiger, Martin; Davey, James; Kohlhammer, Jörn (The Eurographics Association and Blackwell Publishing Ltd., 2012)
      In this paper we present a new Focus & Context technique for the exploration of large, abstract graphs. Most Focus & Context techniques present context in a visual way. In contrast, our technique uses a symbolic representation: ...
    • Vismon: Facilitating Analysis of Trade-Offs, Uncertainty, and Sensitivity In Fisheries Management Decision Making 

      Booshehrian, Maryam; Möller, Torsten; Peterman, Randall M.; Munzner, Tamara (The Eurographics Association and Blackwell Publishing Ltd., 2012)
      In this design study, we present an analysis and abstraction of the data and task in the domain of fisheries management, and the design and implementation of the Vismon tool to address the identified requirements. Vismon ...
    • Visualization of 4D Blood-Flow Fields by Spatiotemporal Hierarchical Clustering 

      Pelt, Roy van; Jacobs, Sander; Romeny, Bart ter Haar; Vilanova, Anna (The Eurographics Association and Blackwell Publishing Ltd., 2012)
      Advancements in the acquisition and modeling of flow fields result in unsteady volumetric flow fields of unprecedented quality. An important example is found in the analysis of unsteady blood-flow data. Preclinical research ...
    • Visualization of Advection-Diffusion in Unsteady Fluid Flow 

      Karch, Grzegorz Karol; Sadlo, Filip; Weiskopf, Daniel; Munz, Claus-Dieter; Ertl, Thomas (The Eurographics Association and Blackwell Publishing Ltd., 2012)
      Advection has been the standard transport mechanism in flow visualization. Diffusion, in contrast, has not been considered important in visual flow field analysis so far, although it is inherent to many physical processes. ...
    • Visualization of Global Correlation Structures in Uncertain 2D Scalar Fields 

      Pfaffelmoser, Tobias; Westermann, Rüdiger (The Eurographics Association and Blackwell Publishing Ltd., 2012)
      Visualizing correlations, i.e., the tendency of uncertain data values at different spatial positions to change contrarily or according to each other, allows inferring on the possible variations of structures in the data. ...
    • Visualizing Motion Data in Virtual Reality: Understanding the Roles of Animation, Interaction, and Static Presentation 

      Coffey, Dane; Korsakov, Fedor; Ewert, Marcus; Hagh-Shenas, Heleh; Thorson, Lauren; Ellingson, Arin; Nuckley, David; Keefe, Daniel (The Eurographics Association and Blackwell Publishing Ltd., 2012)
      We present a study of interactive virtual reality visualizations of scientific motions as found in biomechanics experiments. Our approach is threefold. First, we define a taxonomy of motion visualizations organized by the ...
    • Vortex Analysis in Uncertain Vector Fields 

      Otto, Mathias; Theisel, Holger (The Eurographics Association and Blackwell Publishing Ltd., 2012)
      We present an approach to extract and visualize vortex structures in uncertain vector fields. For this, we generalize the concepts of the most common vortex detectors to uncertain vector fields, namely the λ ...
    • The World's Languages Explorer: Visual Analysis of Language Features in Genealogical and Areal Contexts 

      Rohrdantz, Christian; Hund, Michael; Mayer, Thomas; Wälchli, Bernhard; Keim, Daniel A. (The Eurographics Association and Blackwell Publishing Ltd., 2012)
      This paper presents a novel Visual Analytics approach that helps linguistic researchers to explore the world's languages with respect to several important tasks: (1) The comparison of manually and automatically extracted ...