arXiv 0810.44312008-10-24cs.HC

图形布局影响的眼动追踪研究

An Eye Tracking Study into the Effects of Graph Layout

Weidong Huang

摘要：

图通常被可视化为节点链接图。虽然有相当数量的研究集中在交叉最小化，以提高可读性，很少有人关注如何处理交叉时，他们是最终可视化的重要组成部分。这就要求我们理解人们如何阅读图形，以及交叉点如何影响阅读表现。作为为此目的的初始步骤，进行初步的眼动追踪实验。本实验的具体目的是测试交叉角度和几何路径倾向对眼动和操作的影响。16名受试者用6幅图画完成路径搜索和节点定位任务。结果表明，小角度可以减慢并触发额外的眼球运动，导致路径搜索任务的延迟，而交叉点对节点定位任务的影响很小。几何路径趋势表明，当路径的许多分支指向目标节点时，两个节点之间的路径可能变得更难遵循。所获得的见解进行了讨论，以期在今后的工作中进一步确认。

英文摘要：

Graphs are typically visualized as node-link diagrams. Although there is a fair amount of research focusing on crossing minimization to improve readability, little attention has been paid on how to handle crossings when they are an essential part of the final visualizations. This requires us to understand how people read graphs and how crossings affect reading performance. As an initial step to this end, a preliminary eye tracking experiment was conducted. The specific purpose of this experiment was to test the effects of crossing angles and geometric-path tendency on eye movements and performance. Sixteen subjects performed both path search and node locating tasks with six drawings. The results showed that small angles can slow down and trigger extra eye movements, causing delays for path search tasks, whereas crossings have little impact on node locating tasks. Geometric-path tendency indicates that a path between two nodes can become harder to follow when many branches of the path go toward the target node. The insights obtained are discussed with a view to further confirmation in future work.

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英文摘要：

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