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Visualizing Ranges over Time on Mobile Phones: A Task-Based Crowdsourced Evaluation

Abstract : In the first crowdsourced visualization experiment conducted exclusively on mobile phones, we compare approaches to visualizing ranges over time on small displays. People routinely consume such data via a mobile phone, from temperatures in weather forecasting apps to sleep and blood pressure readings in personal health apps. However, we lack guidance on how to effectively visualize ranges on small displays in the context of different value retrieval and comparison tasks, or with respect to different data characteristics such as periodicity, seasonality, or the cardinality of ranges. Central to our experiment is a comparison between two ways to lay out ranges: a more conventional linear layout strikes a balance between quantitative and chronological scale resolution, while a less conventional radial layout emphasizes the cyclicality of time and may prioritize discrimination between values at its periphery. With results from 87 crowd workers, we found that while participants completed tasks more quickly with linear layouts than with radial ones, there were few differences in terms of error rate between layout conditions. We also found that participants performed similarly with both layouts in tasks that involved comparing superimposed observed and average ranges.
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Submitted on : Thursday, August 16, 2018 - 11:59:19 AM
Last modification on : Thursday, July 8, 2021 - 3:50:53 AM
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Matthew Brehmer, Bongshin Lee, Petra Isenberg, Eun Choe. Visualizing Ranges over Time on Mobile Phones: A Task-Based Crowdsourced Evaluation. IEEE Transactions on Visualization and Computer Graphics, Institute of Electrical and Electronics Engineers, 2019, 25 (1), pp.619-629. ⟨10.1109/TVCG.2018.2865234⟩. ⟨hal-01857469⟩



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