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27th IEEE conference on Virtual Reality and 3D User Interfaces (IEEE VR)

作者： Boensch, Andrea Jonda, Marcel Ehret, Jonathan Kuhlen, Torsten W. Rhein Westfal TH Aachen Visual Comp Inst Aachen Germany

ISBN: (纸本)9781728165325

Simulating a realistic navigation of virtual pedestrians through virtual environments is a recurring subject of investigations. The various mathematical approaches used to compute the pedestrians' paths result, i.a., in different computation-times and varying path characteristics. Customizable parameters, e.g., maximal walking speed or minimal interpersonal distance, add another level of complexity. Thus, choosing the best-fitting approach for a given environment and use-case is non-trivial, especially for novice users. To facilitate the informed choice of a specific algorithm with a certain parameter set, crowd simulation frameworks such as Menge [3] provide an extendable collection of approaches with a unified interface for usage. However, they often miss an elaborated visualization with high informative value accompanied by visual analysis methods to explore the complete simulation data in more detail which is yet required for an informed choice. Benchmarking suites such as SteerBench [14] are a helpful approach as they objectively analyze crowd simulations, however they are too tailored to specific behavior details. To this end, we propose a preliminary design of an advanced graphical user interface providing a 2D and 3D visualization of the crowd simulation data as well as features for time navigation and an overall data exploration.

关键词： H.5.2 [User Interfaces]: User Interfaces Graphical user interfaces (GUI)

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Towards an effective user interface for data exploration, data quality assessment and data integration

Towards an effective user interface for data exploration, da...

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International conference on Semantic Computing

作者： Rolando Hanlon Marguerite Barry Fergal Marrinan Declan O'Sullivan ADAPT Centre Trinity College Dublin Dublin Ireland ADAPT Centre University College Dublin Dublin Ireland Sonas Innovation Dublin Ireland

ISBN: (数字)9781728188997

ISBN: (纸本)9781728189000

Domain professionals (e.g. medical professionals) find it difficult to directly interact with Linked data datasets in order to undertake common tasks that they typically need to do in order to explore their research hypotheses. We propose the development of a tool that integrates the common tasks involved through one user interface to support data exploration, data quality assessment and data integration. To initiate the necessary user-centered design process, we have designed an electronic storyboard to start the user requirements and user research, and evaluated this storyboard through an experiment in which four participants, identified as medical professionals in the healthcare domain, use the electronic storyboard to complete tasks regarding data exploration, data quality and data integration at the schema level. Preliminary findings indicate that the designed user interface will not be directly useful for the medical professionals but rather will be more useful for team members within the team of those medical professionals.

关键词： Navigation visual communication data integrity data integration User interfaces Task analysis Medical diagnostic imaging

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InChorus: Designing Consistent Multimodal Interactions for data visualization on Tablet Devices 20

InChorus: Designing Consistent Multimodal Interactions for D...

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CHI conference on Human Factors in Computing Systems (CHI)

作者： Srinivasan, Arjun Lee, Bongshin Riche, Nathalie Henry Drucker, Steven M. Hinckley, Ken Microsoft Res Redmond WA 98052 USA Georgia Inst Technol Atlanta GA 30332 USA

ISBN: (纸本)9781450367080

While tablet devices are a promising platform for data visualization, supporting consistent interactions across different types of visualizations on tablets remains an open challenge. In this paper, we present multimodal interactions that function consistently across different visualizations, supporting common operations during visual data analysis. By considering standard interface elements (e.g., axes, marks) and grounding our design in a set of core concepts including operations, parameters, targets, and instruments, we systematically develop interactions applicable to different visualization types. To exemplify how the proposed interactions collectively facilitate data exploration, we employ them in a tablet-based system, InChorus that supports pen, touch, and speech input. Based on a study with 12 participants performing replication and fact-checking tasks with InChorus, we discuss how participants adapted to using multimodal input and highlight considerations for future multimodal visualization systems.

关键词： Multimodal interaction data visualization tablet devices pen touch speech

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visual exploration of intracranial aneurysm blood flow adapted to the clinical researcher

Visual exploration of intracranial aneurysm blood flow adapt...

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23rd Eurographics conference on visualization, EuroVis 2021

作者： Behrendt, B. Engelke, W. Berg, P. Beuing, O. Hotz, I. Preim, B. Saalfeld, S. Department of Simulation and Graphics University of Magdeburg Germany Department of Science and Technology Linköping University Sweden Department of Fluid Dynamics and Technical Flows University of Magdeburg Germany Research Campus STIMULATE Germany Institute of Neuroradiology University Hospital Magdeburg Germany

ISBN: (纸本)9783038681472

Rupture risk assessment is a key to devise patient-specific treatment plans of cerebral aneurysms. To understand and predict the development of aneurysms and other vascular diseases over time, both hemodynamic flow patterns and their effect on the vessel surface need to be analyzed. Flow structures close to the vessel wall often correlate directly with local changes in surface parameters, such as pressure or wall shear stress. However, especially for the identification of specific blood flow characteristics that cause local startling parameters on the vessel surface, like elevated pressure values, an interactive analysis tool is missing. In order to find meaningful structures in the entirety of the flow, the data has to be filtered based on the respective explorative aim. Thus, we present a combination of visualization, filtering and interaction techniques for explorative analysis of blood flow with a focus on the relation of local surface parameters and underlying flow structures. In combination with a filtering-based approach, we propose the usage of evolutionary algorithms to reduce the overhead of computing pathlines that do not contribute to the analysis, while simultaneously reducing the undersampling artifacts. We present clinical cases to demonstrate the benefits of both our filter-based and evolutionary approach and showcase its potential for patient-specific treatment plans. © 2021 The Author(s) Eurographics Proceedings © 2021 The Eurographics Association.

关键词： Hemodynamics

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The visualization of Cross-media Knowledge Graph of Tang and Song Poetry

The Visualization of Cross-media Knowledge Graph of Tang and...

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Software Engineering, Artificial Intelligence, Networking and Parallel/Distributed Computing (SNPD-Winter), ACIS International Winter conference on

作者： Wenjuan Jiang Chunfang Li Changti Wu School of Computer Science and Cybersecurity Communication University of China Beijing China

ISBN: (纸本)9781665418430;9781665448260

The special grammar and abstruse rhetoric of Tang and Song poetry doomed the diversity of poetry research. In order to help scholars explore the information space of poetry, we took into account the breadth and depth of learning, combined with heterogeneous data sources such as poetry, videos, textbooks, knowledge graph and other media sources, and carried out visual modeling. We provide a visual and informative platform to demonstrate the potential power of visualization. It supports comprehensive search capabilities for multiple types of data, online generation of poets' knowledge graphs. Relationship diagram, word cloud diagram, pie chart and other visual charts are displayed on the platform, so that users can complete exploratory visual analysis by dragging, clicking and typing.

关键词： visualization Heuristic algorithms Software algorithms data visualization Tag clouds Space exploration Videos

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RadEx: Integrated visual exploration of Multiparametric Studies for Radiomic Tumor Profiling

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COMPUTER GRAPHICS FORUM 2020年第7期39卷 611-622页

作者： Morth, E. Wagner-Larsen, K. Hodneland, E. Krakstad, C. Haldorsen, I. S. Bruckner, S. Smit, N. N. Univ Bergen Dept Informat Bergen Norway Haukeland Hosp Dept Radiol Mohn Med Imaging & Visualizat Ctr Bergen Norway Univ Bergen Dept Clin Med Bergen Norway Norwegian Res Ctr NORCE Bergen Norway Univ Bergen Dept Clin Sci Ctr Canc Biomarkers Bergen Norway

Better understanding of the complex processes driving tumor growth and metastases is critical for developing targeted treatment strategies in cancer. Radiomics extracts large amounts of features from medical images which enables radiomic tumor profiling in combination with clinical markers. However, analyzing complex imaging data in combination with clinical data is not trivial and supporting tools aiding in these exploratory analyses are presently missing. In this paper, we present an approach that aims to enable the analysis of multiparametric medical imaging data in combination with numerical, ordinal, and categorical clinical parameters to validate established and unravel novel biomarkers. We propose a hybrid approach where dimensionality reduction to a single axis is combined with multiple linked views allowing clinical experts to formulate hypotheses based on all available imaging data and clinical parameters. This may help to reveal novel tumor characteristics in relation to molecular targets for treatment, thus providing better tools for enabling more personalized targeted treatment strategies. To confirm the utility of our approach, we closely collaborate with experts from the field of gynecological cancer imaging and conducted an evaluation with six experts in this field.

关键词： CCS Concepts • Applied computing ŕ Health informatics • Human-centered computing ŕ visualization design and evaluation methods

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visual Analytics for the Reduction of Air Pollution on Real-Time data Derived from WSN

Visual Analytics for the Reduction of Air Pollution on Real-...

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Multidisciplinary International conference of Research Applied to Defense and Security (MICRADS)

作者： Quiroz, Dorys Guanochanga, Byron Fuertes, Walter Benitez, Diego Torres, Jenny Tapia, Freddy Toulkkeridis, Theofilos Univ Fuerzas Armadas ESPE Dept Ciencias Comp Sangolqui 1715231B Ecuador USFQ Colegio Ciencias & Ingn Politecn Campus Cumbaya Quito 171200841 Ecuador Escuela Politec Nacl Dept Informat & Ciencias Comp Quito 17012759 Ecuador

ISBN: (纸本)9789811391552;9789811391545

Nowadays, the contaminated and poor air quality that is inhaled by the city population in industrialized cities around the world has led to one of the main causes of premature death due to respiratory diseases. Therefore, the improvement of air quality becomes a priority. In this sense, the current study aimed to design and implement a visual analytics tool, in order to process large data sets, which have been generated by wireless sensor networks (WSN), which measured different environmental pollutants in real time. Hereby, the phases of the CRISP-DM methodology have been applied as a reference to guide the process. In the data preparation phase, programs have been implemented using Python. Then, the results have been stored in collections within a MongoDB database. Furthermore, for the modeling and visual exploration of the data, the Tableau tool has been used. The evaluation of the results allowed to demonstrate certain behavior of air pollutants around the city, such as the increased air pollution levels during daylight hours. Similarly, we discovered that the presence of particulate material PM10 and PM2.5 is directly related to the increase of the Air Quality Index for the city of Quito (IQCA). This leads to the conclusion that our analysis may be useful as a support tool in the decision-making of public policies for the reduction of air pollution.

关键词： Air pollution data mining Wireless sensor networks visual analytics

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Interactive Time-Series of Measures for Exploring Dynamic Networks 20

Interactive Time-Series of Measures for Exploring Dynamic Ne...

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Working conference on Advanced visual Interfaces (AVI)

作者： Xie, Liwenhan O'Donnell, James Bach, Benjamin Fekete, Jean-Daniel Peking Univ Beijing Peoples R China Univ Edinburgh Edinburgh Midlothian Scotland Univ Paris Saclay LRI Inria CNRS Paris France

ISBN: (纸本)9781450375351

We present MeasureFlow, an interface to visually and interactively explore dynamic networks through time-series of network measures such as link number, graph density, or node activation. When networks contain many time steps, become large and more dense, or contain high frequencies of change, traditional visualizations that focus on network topology, such as animations or small multiples, fail to provide adequate overviews and thus fail to guide the analyst towards interesting time points and periods. MeasureFlow presents a complementary approach that relies on visualizing time-series of common network measures to provide a detailed yet comprehensive overview of when changes are happening and which network measures they involve. As dynamic networks undergo changes of varying rates and characteristics, network measures provide important hints on the pace and nature of their evolution and can guide an analysts in their exploration;based on a set of interactive and signal-processing methods, MeasureFlow allows an analyst to select and navigate periods of interest in the network. We demonstrate MeasureFlow through case studies with real-world data.

关键词： dynamic networks exploratory data analysis network measures interaction signal processing

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Enhancing Usability Evaluation of Web-Based Geographic Information Systems (WebGIS) with visual Analytics 11

Enhancing Usability Evaluation of Web-Based Geographic Infor...

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11th International conference on Geographic Information Science, GIScience 2021

作者： Unrau, RenÃ Kray, Christian Institute for Geoinformatics University of MÃnster Germany

ISBN: (纸本)9783959771665

Many websites nowadays incorporate geospatial data that users interact with, for example, to filter search results or compare alternatives. These web-based geographic information systems (WebGIS) pose new challenges for usability evaluations as both the interaction with classic interface elements and with map-based visualizations have to be analyzed to understand user behavior. This paper proposes a new scalable approach that applies visual analytics to logged interaction data with WebGIS, which facilitates the interactive exploration and analysis of user behavior. In order to evaluate our approach, we implemented it as a toolkit that can be easily integrated into existing WebGIS. We then deployed the toolkit in a user study (N=60) with a realistic WebGIS and analyzed usersâ interaction in a second study with usability experts (N=7). Our results indicate that the proposed approach is practically feasible, easy to integrate into existing systems, and facilitates insights into the usability of WebGIS. © LIPIcs 2020.

关键词： Geographic information systems

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A Design Process Integrating Human-data Interaction Guidelines and Semio-Participatory Design 1

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21st International conference on Enterprise Information Systems (ICEIS)

作者： Victorelli, Eliane Zambon Dos Reis, Julio Cesar Souza Santos, Antonio Alberto Schiozer, Denis Jose Univ Campinas UNICAMP Inst Comp Campinas Brazil Univ Campinas UNICAMP Ctr Petr Studies Campinas Brazil

ISBN: (数字)9783030407834

ISBN: (纸本)9783030407834;9783030407827

Software tools that facilitate human interaction with data play a key role in the understanding of information from large masses of data. Interaction design in the domain of petroleum field exploration is a challenging task, in part because of its complex intrinsic context, and the lack of methodological framework to support design activities. The use of guidelines builds on the expertise of design specialists, but does not leverage the knowledge of the various stakeholders in the problem. In this article, we advocate a more socially comprehensive approach to the design of Human-data Interaction (HDI) applications, articulating design guidelines with artifacts and methods from Organizational Semi-otics and Participatory Design. Our investigation defines a process for the design of visual data analysis tools and conducts a case study in the context of petroleum production strategy with the participation of key stakeholders. We propose practices for each step of our design process. Adapted participatory practices combined with design guidelines were used to clarify the problem, design the solution, and evaluate the prototype. Participants showed satisfaction with the employed design practices and the outcomes.

关键词： Human-data Interaction Participatory design visual analytics

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