Comparative eye-tracking evaluation of scatterplots and parallel coordinates

作     者：Rudolf Netzel Jenny Vuong Ulrich Engelke Seán O’Donoghue Daniel Weiskopf Julian Heinrich 

作者机构：Visualization Research Center(VISUS)University of StuttgartStuttgartGermany Commonwealth Scientific and Industrial Research Organisation(CSIRO)(SydneyHobart)Australia University of TübingenTübingenGermany 

出 版 物：《Visual Informatics》 (可视信息学（英文）)

年 卷 期：2017年第1卷第2期

页      面：118-131页

核心收录：

学科分类：08[工学] 0812[工学-计算机科学与技术（可授工学、理学学位）] 

基　　金：We would like to thank the Carl-Zeiss-Foundation(Carl-Zeiss-Stiftung) the German Research Foundation(DFG)for financial support within project B01 of SFB/Transregio 161 

主　　题：Parallel coordinates Scatterplots Cartesian coordinates Eye tracking Controlled laboratory user study 

摘      要：We investigate task performance and reading characteristics for scatterplots(Cartesian coordinates)and parallel *** a controlled eye-tracking study,we asked 24 participants to assess the relative distance of points in multidimensional space,depending on the diagram type(parallel coordinates or a horizontal collection of scatterplots),the number of data dimensions(2,4,6,or 8),and the relative distance between points(15%,20%,or 25%).For a given reference point and two target points,we instructed participants to choose the target point that was closer to the reference point in multidimensional *** present a visual scanning model that describes different strategies to solve this retrieval task for both diagram types,and propose corresponding hypotheses that we test using task completion time,accuracy,and gaze positions as dependent *** results show that scatterplots outperform parallel coordinates significantly in 2 dimensions,however,the task was solved more quickly and more accurately with parallel coordinates in 8 *** eye-tracking data further shows significant differences between Cartesian and parallel coordinates,as well as between different numbers of *** parallel coordinates,there is a clear trend toward shorter fixations and longer saccades with increasing number of *** an area-of-interest(AOI)based approach,we identify different reading strategies for each diagram type:For parallel coordinates,the participants’gaze frequently jumped back and forth between pairs of axes,while axes were rarely focused on when viewing Cartesian *** further found that participants’attention is biased:toward the center of the whole plot for parallel coordinates and skewed to the center/left side for Cartesian *** anticipate that these results may support the design of more effective visualizations for multidimensional data.