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Visualizing ordered bivariate data on node-link diagrams

Visual Informatics 2023年第3期7卷 22-36页

作者： Osman Akbulut Lucy McLaughlin Tong Xin Matthew Forshaw Nicolas S.Holliman School of Computing Newcastle University1 Science SquareNewcastle upon TyneNE45TGUnited Kingdom CUSP London Department of InformaticsKing’s College LondonBush House30 AldwychLondonWC2B 4BGUnited Kingdom Department of Computer Engineering Faculty of EngineeringDuzce UniversityDuzceTurkey

Node-link visual representation is a widely used tool that allows decision-makers to see details about a network through the appropriate choice of visual ***,existing visualization methods are not always effective and efficient in representing bivariate graph-based *** study proposes a novel node-link visual model–visual entropy(Vizent)graph–to effectively represent both primary and secondary values,such as uncertainty,on the edges *** performed two user studies to demonstrate the efficiency and effectiveness of our approach in the context of static nodelink *** the first experiment,we evaluated the performance of the Vizent design to determine if it performed equally well or better than existing alternatives in terms of response time and *** static visual encodings that use two visual cues were selected from the literature for comparison:Width-Lightness,Saturation-Transparency,and Numerical *** compared the Vizent design to the selected visual encodings on various graphs ranging in complexity from 5 to 25 edges for three different *** participants achieved higher accuracy of their responses using Vizent and Numerical values;however,both Width-Lightness and Saturation-Transparency did not show equal performance for all *** results suggest that increasing graph size has no impact on Vizent in terms of response time and *** performance of the Vizent graph was then compared to the Numerical values *** Wilcoxon signed-rank test revealed that mean response time in seconds was significantly less when the Vizent graphs were presented,while no significant difference in accuracy was *** results from the experiments are encouraging and we believe justify using the Vizent graph as a good alternative to traditional methods for representing bivariate data in the context of node-link diagrams.

关键词： Bivariate network visualization edge visualization Uncertainty visualization Node-link diagram Quantitative evaluation

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