scholarly journals Evaluating Immersive Approaches to Multidimensional Information Visualization

2019 ◽  
Author(s):  
Jorge A. Wagner Filho ◽  
Carla M. D. S. Freitas ◽  
Luciana Nedel
Keyword(s):  
Information Visualization ◽  
User Study ◽  
Direct Interaction ◽  
Data Exploration ◽  
Multidimensional Data ◽  
Frequent User ◽  
Multidimensional Information ◽  
Immersive Environment ◽  
Time Overhead ◽  
User Comfort

This dissertation investigates the use of Virtual Reality for the exploration of multidimensional data represented as 3D scatterplots. After an initial user study indicated that an immersive environment required less effort to find information and less navigation, but resulted in inefficient times and frequent user discomfort, we proposed and evaluated an alternative data exploration approach based on the use of physical movements, direct interaction with data at arms reach and a virtual reproduction of the analysts work desk. Through a second study, we demonstrate that this setup, named VirtualDesk, presents excellent results regarding user comfort, and performs equally or better in all tasks, while adding minimal or no time overhead and amplifying data exploration.

scholarly journals Multidimensional Data Exploration by Explicitly Controlled Animation

Informatics ◽  
2017 ◽  
Vol 4 (3) ◽  
pp. 26 ◽  
Author(s):  
Johannes Kruiger ◽  
Almoctar Hassoumi ◽  
Hans-Jörg Schulz ◽  
AlexandruC Telea ◽  
Christophe Hurter
Keyword(s):  
Data Exploration ◽  
Multidimensional Data

Creating and Managing Virtual Menus in Immersive Environments

1998 ◽  
Author(s):  
Uma Jayaram ◽  
Narayanan Mathrubutham ◽  
Sankar Jayaram
Keyword(s):  
Virtual Environment ◽  
Support System ◽  
Direct Interaction ◽  
Washington State ◽  
State University ◽  
Immersive Environments ◽  
Engineering Applications ◽  
Washington State University ◽  
Spatial Presentation ◽  
Immersive Environment

Abstract A 3D menu, also called a virtual menu, is now an accepted method of interaction between the user and the computer in an immersive environment. It adds functionality and allows interactions that are usually difficult to specify through direct interaction. We present the design and methodology of a support system for 3D menu creation and interaction in an immersive environment. Three kinds of virtual menus are supported — a paddle, a static billboard, and a dynamic billboard. These are distinguished by different spatial presentation and interaction paradigms in the virtual environment. The integration of the support system into an immersive environment is presented in the context of engineering applications research at Washington State University. Problems encountered and future planned enhancements are also examined. A clean separation between the virtual menu support system and the application in which the virtual menu will be created and displayed has been maintained.

An Investigation of User Behaviour Consistency for Context-Aware Information Retrieval Systems

2009 ◽  
Vol 1 (4) ◽  
pp. 69-90 ◽  
Author(s):  
Adam Grzywaczewski ◽  
Rahat Iqbal ◽  
Anne James ◽  
John Halloran
Keyword(s):  
Information Retrieval ◽  
User Study ◽  
User Interaction ◽  
Context Aware ◽  
Interaction Patterns ◽  
Frequent User ◽  
User Interactions ◽  
Information Retrieval Systems ◽  
Finite Set ◽  
Domain Expertise

Users interact with the Internet in dynamic environments that require the IR system to be context aware. Modern IR systems take advantage of user location, browsing history or previous interaction patterns, but a significant number of contextual factors that impact the user information retrieval process are not yet available. Parameters like the emotional state of the user and user domain expertise affect the user experience significantly but are not understood by IR systems. This article presents results of a user study that simplifies the way context in IR and its role in the systems’ efficiency is perceived. The study supports the hypothesis that the number of user interaction contexts and the problems that a particular user is trying to solve is related to lifestyle. Therefore, the IR system’s perception of the interaction context can be reduced to a finite set of frequent user interactions.

From Touchpad to Smart Lens

2013 ◽  
Vol 5 (2) ◽  
pp. 1-20 ◽  
Author(s):  
Matthias Baldauf ◽  
Peter Fröhlich ◽  
Jasmin Buchta ◽  
Theresa Stürmer
Keyword(s):  
Real World ◽  
User Study ◽  
Direct Interaction ◽  
The Other ◽  
Use Case ◽  
Interaction Techniques ◽  
Public Displays ◽  
New Approaches ◽  
Study Results ◽  
Completion Times

Today’s smartphones provide the technical means to serve as interfaces for public displays in various ways. Even though recent research has identified several new approaches for mobile-display interaction, inter-technique comparisons of respective methods are scarce. The authors conducted an experimental user study on four currently relevant mobile-display interaction techniques (‘Touchpad’, ‘Pointer’, ‘Mini Video’, and ‘Smart Lens’) and learned that their suitability strongly depends on the task and use case at hand. The study results indicate that mobile-display interactions based on a traditional touchpad metaphor are time-consuming but highly accurate in standard target acquisition tasks. The direct interaction techniques Mini Video and Smart Lens had comparably good completion times, and especially Mini Video appeared to be best suited for complex visual manipulation tasks like drawing. Smartphone-based pointing turned out to be generally inferior to the other alternatives. Examples for the application of these differentiated results to real-world use cases are provided.

scholarly journals Depicting More Information in Enriched Squarified Treemaps with Layered Glyphs

Information ◽  
2020 ◽  
Vol 11 (2) ◽  
pp. 123
Author(s):  
Anderson Gregório Marques Soares ◽  
Elvis Thermo Carvalho Miranda ◽  
Rodrigo Santos do Amor Divino Lima ◽  
Carlos Gustavo Resque dos Santos ◽  
Bianchi Serique Meiguins
Keyword(s):  
Information Visualization ◽  
Data Structures ◽  
User Study ◽  
Relevant Information ◽  
Data Representation ◽  
High Dimensional ◽  
Hierarchical Data ◽  
Visual Data ◽  
Visual Variable ◽  
Data Clusters

The Treemap is one of the most relevant information visualization (InfoVis) techniques to support the analysis of large hierarchical data structures or data clusters. Despite that, Treemap still presents some challenges for data representation, such as the few options for visual data mappings and the inability to represent zero and negative values. Additionally, visualizing high dimensional data requires many hierarchies, which can impair data visualization. Thus, this paper proposes to add layered glyphs to Treemap’s items to mitigate these issues. Layered glyphs are composed of N partially visible layers, and each layer maps one data dimension to a visual variable. Since the area of the upper layers is always smaller than the bottom ones, the layers can be stacked to compose a multidimensional glyph. To validate this proposal, we conducted a user study to compare three scenarios of visual data mappings for Treemaps: only Glyphs (G), Glyphs and Hierarchy (GH), and only Hierarchy (H). Thirty-six volunteers with a background in InfoVis techniques, organized into three groups of twelve (one group per scenario), performed 8 InfoVis tasks using only one of the proposed scenarios. The results point that scenario GH presented the best accuracy while having a task-solving time similar to scenario H, which suggests that representing more data in Treemaps with layered glyphs enriched the Treemap visualization capabilities without impairing the data readability.

scholarly journals Embodied lenses for collaborative visual queries on tabletop displays

2012 ◽  
Vol 11 (4) ◽  
pp. 319-338 ◽  
Author(s):  
KyungTae Kim ◽  
Niklas Elmqvist
Keyword(s):  
Formative Evaluation ◽  
User Study ◽  
Conceptual Models ◽  
Virtual Space ◽  
Multidimensional Data ◽  
Physical Interaction ◽  
Tabletop Displays ◽  
Multidimensional Data Visualization ◽  
Diffuse Illumination ◽  
Free Interaction

We introduce embodied lenses for visual queries on tabletop surfaces using physical interaction. The lenses are simply thin sheets of paper or transparent foil decorated with fiducial markers, allowing them to be tracked by a diffuse illumination tabletop display. The physical affordance of these embodied lenses allow them to be overlapped, causing composition in the underlying virtual space. We perform a formative evaluation to study users’ conceptual models for overlapping physical lenses. This is followed by a quantitative user study comparing performance for embodied versus purely virtual lenses. Results show that embodied lenses are as efficient as purely virtual lenses, and also support tactile and eyes-free interaction. We then present several examples of the technique, including image layers, map layers, image manipulation, and multidimensional data visualization. The technique is simple, cheap, and can be integrated into many existing tabletop displays.

scholarly journals SilkViser: A Visual Explorer of Blockchain-based Cryptocurrency Transaction Data

2020 ◽  
Author(s):  
Ying Zhao
Keyword(s):  
User Study ◽  
Data Exploration ◽  
Transaction Data ◽  
Free Data ◽  
Novice Users ◽  
Copper Coin

<p>Many blockchain-based cryptocurrencies provide users with online blockchain explorers for viewing online transaction data. However, traditional blockchain explorers mostly present transaction information in textual and tabular forms. Such forms make understanding cryptocurrency transaction mechanisms difficult for novice users (NUsers). They are also insufficiently informative for experienced users (EUsers) to recognize advanced transaction information. This study introduces a new online cryptocurrency transaction data viewing tool called SilkViser. Guided by detailed scenario and requirement analyses, we create a series of appreciating visualization designs, such as paper ledger-inspired block and blockchain visualizations and ancient copper coin-inspired transaction visualizations, to help users understand cryptocurrency transaction mechanisms and recognize advanced transaction information. We also provide a set of lightweight interactions to facilitate easy and free data exploration. Moreover, a controlled user study is conducted to quantitatively evaluate the usability and effectiveness of SilkViser. Results indicate that SilkViser can satisfy the requirements of NUsers and EUsers. Our visualization designs can compensate for the inexperience of NUsers in data viewing and attract potential users to participate in cryptocurrency transactions.</p>

scholarly journals The technology behind TB DEPOT: a novel public analytics platform integrating tuberculosis clinical, genomic, and radiological data for visual and statistical exploration

2020 ◽  
Author(s):  
Alyssa Long ◽  
Alexander Glogowski ◽  
Matthew Meppiel ◽  
Lisa De Vito ◽  
Eric Engle ◽  
...  
Keyword(s):  
Infectious Diseases ◽  
Clinical Research ◽  
Architectural Design ◽  
Application Programming Interface ◽  
Lessons Learned ◽  
Data Exploration ◽  
Multidimensional Data ◽  
Server Side ◽  
Wide Range ◽  
Clinical Research Informatics

Abstract Objective Clinical research informatics tools are necessary to support comprehensive studies of infectious diseases. The National Institute of Allergy and Infectious Diseases (NIAID) developed the publicly accessible Tuberculosis Data Exploration Portal (TB DEPOT) to address the complex etiology of tuberculosis (TB). Materials and Methods TB DEPOT displays deidentified patient case data and facilitates analyses across a wide range of clinical, socioeconomic, genomic, and radiological factors. The solution is built using Amazon Web Services cloud-based infrastructure, .NET Core, Angular, Highcharts, R, PLINK, and other custom-developed services. Structured patient data, pathogen genomic variants, and medical images are integrated into the solution to allow seamless filtering across data domains. Results Researchers can use TB DEPOT to query TB patient cases, create and save patient cohorts, and execute comparative statistical analyses on demand. The tool supports user-driven data exploration and fulfills the National Institute of Health’s Findable, Accessible, Interoperable, and Reusable (FAIR) principles. Discussion TB DEPOT is the first tool of its kind in the field of TB research to integrate multidimensional data from TB patient cases. Its scalable and flexible architectural design has accommodated growth in the data, organizations, types of data, feature requests, and usage. Use of client-side technologies over server-side technologies and prioritizing maintenance have been important lessons learned. Future directions are dynamically prioritized and key functionality is shared through an application programming interface. Conclusion This paper describes the platform development methodology, resulting functionality, benefits, and technical considerations of a clinical research informatics application to support increased understanding of TB.

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