Classification framework to identify similar visual scan paths using multiple similarity metrics

IF 16.4 1区 化学 Q1 CHEMISTRY, MULTIDISCIPLINARY
Ricardo Palma Fraga, Ziho Kang, Jerry Crutchfield
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引用次数: 0

Abstract

Analyzing visual scan paths, the time-ordered sequence of eye fixations and saccades, can help us understand how operators visually search the environment before making a decision. To analyze and compare visual scan paths, prior studies have used metrics such as string edit similarity, which considers the order used to inspect areas of interest (AOIs), as well as metrics that consider the AOIs shared between visual scan paths. However, to identify similar visual scan paths, particularly in tasks and environments in which operators may apply variations of a common underlying visual scanning behavior, using solely one similarity metric might not be sufficient. In this study, we introduce a classification framework using a combination of the string edit algorithm and the Jaccard coefficient similarity. We applied our framework to the visual scan paths of nine tower controllers in a high-fidelity simulator when a “clear-to-take-off” clearance was issued. The classification framework was able to provide richer and more meaningful classifications of the visual scan paths compared to the results when using either the string edit algorithm or Jaccard coefficient similarity.
利用多种相似性指标识别相似视觉扫描路径的分类框架
分析视觉扫描路径(即眼睛定点和眼球移动的时间顺序序列)有助于我们了解操作员在做出决策前是如何对环境进行视觉搜索的。为了分析和比较视觉扫描路径,先前的研究使用了字符串编辑相似度等指标,这些指标考虑了用于检查感兴趣区(AOI)的顺序,以及考虑视觉扫描路径之间共享的感兴趣区的指标。然而,要识别相似的视觉扫描路径,特别是在操作员可能会对共同的基本视觉扫描行为进行变异的任务和环境中,仅使用一种相似度量可能是不够的。在本研究中,我们结合字符串编辑算法和 Jaccard 系数相似性引入了一个分类框架。我们在高保真模拟器中对九名塔台管制员发出 "起飞许可 "时的视觉扫描路径应用了我们的框架。与使用字符串编辑算法或杰卡德系数相似性的结果相比,分类框架能够提供更丰富、更有意义的视觉扫描路径分类。
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来源期刊
Accounts of Chemical Research
Accounts of Chemical Research 化学-化学综合
CiteScore
31.40
自引率
1.10%
发文量
312
审稿时长
2 months
期刊介绍: Accounts of Chemical Research presents short, concise and critical articles offering easy-to-read overviews of basic research and applications in all areas of chemistry and biochemistry. These short reviews focus on research from the author’s own laboratory and are designed to teach the reader about a research project. In addition, Accounts of Chemical Research publishes commentaries that give an informed opinion on a current research problem. Special Issues online are devoted to a single topic of unusual activity and significance. Accounts of Chemical Research replaces the traditional article abstract with an article "Conspectus." These entries synopsize the research affording the reader a closer look at the content and significance of an article. Through this provision of a more detailed description of the article contents, the Conspectus enhances the article's discoverability by search engines and the exposure for the research.
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