Browsing 38-Issue 3 by Title

Now showing items 36-55 of 59

    • An Ontological Framework for Supporting the Design and Evaluation of Visual Analytics Systems 

      Chen, Min; Ebert, David (The Eurographics Association and John Wiley & Sons Ltd., 2019)
      Designing, evaluating, and improving visual analytics (VA) systems is a primary area of activities in our discipline. In this paper, we present an ontological framework for recording and categorizing technical shortcomings ...

    • Optimizing Stepwise Animation in Dynamic Set Diagrams 

      Mizuno, Kazuyo; WU, Hsiang-Yun; Takahashi, Shigeo; Igarashi, Takeo (The Eurographics Association and John Wiley & Sons Ltd., 2019)
      A set diagram represents the membership relation among data elements. It is often visualized as secondary information on top of primary information, such as the spatial positions of elements on maps and charts. Visualizing ...

    • Oui! Outlier Interpretation on Multi-dimensional Data via Visual Analytics 

      Zhao, Xun; Cui, Weiwei; Wu, Yanhong; Zhang, Haidong; Qu, Huamin; Zhang, Dongmei (The Eurographics Association and John Wiley & Sons Ltd., 2019)
      Outliers, the data instances that do not conform with normal patterns in a dataset, are widely studied in various domains, such as cybersecurity, social analysis, and public health. By detecting and analyzing outliers, ...

    • A Random Sampling O(n) Force-calculation Algorithm for Graph Layouts 

      Gove, Robert (The Eurographics Association and John Wiley & Sons Ltd., 2019)
      This paper proposes a linear-time repulsive-force-calculation algorithm with sub-linear auxiliary space requirements, achieving an asymptotic improvement over the Barnes-Hut and Fast Multipole Method force-calculation ...

    • Ray Tracing Generalized Tube Primitives: Method and Applications 

      Han, Mengjiao; Wald, Ingo; Usher, Will; Wu, Qi; Wang, Feng; Pascucci, Valerio; Hansen, Charles D.; Johnson, Chris R. (The Eurographics Association and John Wiley & Sons Ltd., 2019)
      We present a general high-performance technique for ray tracing generalized tube primitives. Our technique efficiently supports tube primitives with fixed and varying radii, general acyclic graph structures with bifurcations, ...

    • Robust Extraction and Simplification of 2D Symmetric Tensor Field Topology 

      Jankowai, Jochen; Wang, Bei; Hotz, Ingrid (The Eurographics Association and John Wiley & Sons Ltd., 2019)
      In this work, we propose a controlled simplification strategy for degenerated points in symmetric 2D tensor fields that is based on the topological notion of robustness. Robustness measures the structural stability of the ...

    • Robust Reference Frame Extraction from Unsteady 2D Vector Fields with Convolutional Neural Networks 

      Kim, Byungsoo; Günther, Tobias (The Eurographics Association and John Wiley & Sons Ltd., 2019)
      Robust feature extraction is an integral part of scientific visualization. In unsteady vector field analysis, researchers recently directed their attention towards the computation of near-steady reference frames for vortex ...

    • Route-Aware Edge Bundling for Visualizing Origin-Destination Trails in Urban Traffic 

      Zeng, Wei; Shen, Qiaomu; Jiang, Yuzhe; Telea, Alexandru (The Eurographics Association and John Wiley & Sons Ltd., 2019)
      Origin-destination (OD) trails describe movements across space. Typical visualizations thereof use either straight lines or plot the actual trajectories. To reduce clutter inherent to visualizing large OD datasets, bundling ...

    • Scalable Ray Tracing Using the Distributed FrameBuffer 

      Usher, Will; Wald, Ingo; Amstutz, Jefferson; Günther, Johannes; Brownlee, Carson; Pascucci, Valerio (The Eurographics Association and John Wiley & Sons Ltd., 2019)
      Image- and data-parallel rendering across multiple nodes on high-performance computing systems is widely used in visualization to provide higher frame rates, support large data sets, and render data in situ. Specifically ...

    • Segmentifier: Interactive Refinement of Clickstream Data 

      Dextras-Romagnino, Kimberly; Munzner, Tamara (The Eurographics Association and John Wiley & Sons Ltd., 2019)
      Clickstream data has the potential to provide insights into e-commerce consumer behavior, but previous techniques fall short of handling the scale and complexity of real-world datasets because they require relatively clean ...

    • A Stable Graph Layout Algorithm for Processes 

      Mennens, Robin; Scheepens, Roeland; Westenberg, Michel (The Eurographics Association and John Wiley & Sons Ltd., 2019)
      Process mining enables organizations to analyze data about their (business) processes. Visualization is key to gaining insight into these processes and the associated data. Process visualization requires a high-quality ...

    • SurgeryCuts: Embedding Additional Information in Maps without Occluding Features 

      Angelini, Marco; Buchmüller, Juri; Keim, Daniel A.; Meschenmoser, Philipp; Santucci, Giuseppe (The Eurographics Association and John Wiley & Sons Ltd., 2019)
      Visualizing contextual information to a map often comes at the expense of overplotting issues. Especially for use cases with relevant map features in the immediate vicinity of an information to add, occlusion of the relevant ...

    • Topic Tomographies (TopTom): a Visual Approach to Distill Information From Media Streams 

      Gobbo, Beatrice; Balsamo, Duilio; Mauri, Michele; Bajardi, Paolo; Panisson, André; CIUCCARELLI, PAOLO (The Eurographics Association and John Wiley & Sons Ltd., 2019)
      In this paper we present TopTom, a digital platform whose goal is to provide analytical and visual solutions for the exploration of a dynamic corpus of user-generated messages and media articles, with the aim of i) distilling ...

    • Toward Understanding Representation Methods in Visualization Recommendations through Scatterplot Construction Tasks 

      L'Yi, Sehi; Chang, Youli; Shin, DongHwa; Seo, Jinwook (The Eurographics Association and John Wiley & Sons Ltd., 2019)
      Most visualization recommendation systems predominantly rely on graphical previews to describe alternative visual encodings. However, since InfoVis novices are not familiar with visual representations (e.g., interpretation ...

    • Towards Glyphs for Uncertain Symmetric Second-Order Tensors 

      Gerrits, Tim; Rössl, Christian; Theisel, Holger (The Eurographics Association and John Wiley & Sons Ltd., 2019)
      Measured data often incorporates some amount of uncertainty, which is generally modeled as a distribution of possible samples. In this paper, we consider second-order symmetric tensors with uncertainty. In the 3D case, ...

    • A User-based Visual Analytics Workflow for Exploratory Model Analysis 

      Cashman, Dylan; Humayoun, Shah Rukh; Heimerl, Florian; Park, Kendall; Das, Subhajit; Thompson, John; Saket, Bahador; Mosca, Abigail; Stasko, John; Endert, Alex; Gleicher, Michael; Chang, Remco (The Eurographics Association and John Wiley & Sons Ltd., 2019)
      Many visual analytics systems allow users to interact with machine learning models towards the goals of data exploration and insight generation on a given dataset. However, in some situations, insights may be less important ...

    • V-Awake: A Visual Analytics Approach for Correcting Sleep Predictions from Deep Learning Models 

      Garcia Caballero, Humberto; Westenberg, Michel; Gebre, Binyam; Wijk, Jarke J. van (The Eurographics Association and John Wiley & Sons Ltd., 2019)
      The usage of deep learning models for tagging input data has increased over the past years because of their accuracy and highperformance. A successful application is to score sleep stages. In this scenario, models are ...

    • VIAN: A Visual Annotation Tool for Film Analysis 

      Halter, Gaudenz; Ballester-Ripoll, Rafael; Flueckiger, Barbara; Pajarola, Renato (The Eurographics Association and John Wiley & Sons Ltd., 2019)
      While color plays a fundamental role in film design and production, existing solutions for film analysis in the digital humanities address perceptual and spatial color information only tangentially. We introduce VIAN, a ...

    • Visual Analysis of Charge Flow Networks for Complex Morphologies 

      Kottravel, Sathish; Falk, Martin; Bin Masood, Talha; linares, mathieu; Hotz, Ingrid (The Eurographics Association and John Wiley & Sons Ltd., 2019)
      In the field of organic electronics, understanding complex material morphologies and their role in efficient charge transport in solar cells is extremely important. Related processes are studied using the Ising model and ...

    • A Visual Tool for the Analysis of Algorithms for Tomographic Fiber Reconstruction in Materials Science 

      Fröhler, Bernhard; Elberfeld, Tim; Möller, Torsten; Hege, Hans-Christian; Weissenböck, Johannes; De Beenhouwer, Jan; Sijbers, Jan; Kastner, Johann; Heinzl, Christoph (The Eurographics Association and John Wiley & Sons Ltd., 2019)
      We present visual analysis methods for the evaluation of tomographic fiber reconstruction algorithms by means of analysis, visual debugging and comparison of reconstructed fibers in materials science. The methods are ...