Lumos: Increasing Awareness of Analytic Behavior during Visual Data Analysis

Lumos: Increasing Awareness of Analytic Behavior during Visual Data Analysis
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Lumos:提高可视化数据分析过程中分析行为的意识

DOI:
10.1109/tvcg.2021.3114827
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发表时间:
2022
影响因子:
5.2
通讯作者:
Endert, Alex
Endert, Alex
中科院分区:
计算机科学1区
文献类型:
--
作者:
Narechania, Arpit;Coscia, Adam;Wall, Emily;Endert, Alex

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可视化数据分析工具为人们提供了使用各种交互功能来探索数据的代理和灵活性。然而,在用户不知不觉地过分强调或低估他们正在分析的数据或属性空间的特定子集的情况下,这种灵活性可能会带来潜在的后果。例如,用户可能会过度强调特定属性和/或它们的值(例如,性别总是在X轴上编码),低估其他属性(例如,宗教从未编码),忽略数据的子集(例如,老年人被过滤掉)等。作为回应,我们提出了Lumos,这是一个可视化数据分析工具,可以捕获并显示与数据的交互历史,以提高对此类分析行为的认识。使用原位(在交互的地方)和非原位(在外部视图)可视化技术,Lumos为用户提供实时反馈,让他们反思自己的活动。例如,Lumos突出显示以前在同一可视化(原位)中检查过的数据点,并在单独的可视化(非原位)中将它们覆盖在底层数据分布(即基线分布)上。通过对24名参与者的用户研究,我们调查了Lumos如何帮助用户进行数据探索和决策过程。我们发现,Lumos提高了用户对实时可视化数据分析实践的认识,促进了对其意图的反思和承认,并可能影响随后的交互。
Visual data analysis tools provide people with the agency and flexibility to explore data using a variety of interactive functionalities. However, this flexibility may introduce potential consequences in situations where users unknowingly overemphasize or underemphasize specific subsets of the data or attribute space they are analyzing. For example, users may overemphasize specific attributes and/or their values (e.g., Gender is always encoded on the X axis), underemphasize others (e.g., Religion is never encoded), ignore a subset of the data (e.g., older people are filtered out), etc. In response, we present Lumos, a visual data analysis tool that captures and shows the interaction history with data to increase awareness of such analytic behaviors. Using in-situ (at the place of interaction) and ex-situ (in an external view) visualization techniques, Lumos provides real-time feedback to users for them to reflect on their activities. For example, Lumos highlights datapoints that have been previously examined in the same visualization (in-situ) and also overlays them on the underlying data distribution (i.e., baseline distribution) in a separate visualization (ex-situ). Through a user study with 24 participants, we investigate how Lumos helps users' data exploration and decision-making processes. We found that Lumos increases users' awareness of visual data analysis practices in real-time, promoting reflection upon and acknowledgement of their intentions and potentially influencing subsequent interactions.
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