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Reusing Operations In Interactive Visualizations and Computational Notebooks 3 Jan 2023
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Interactive data analysis leverages human perception to enable various analysis tasks; however, a prior analysis can rarely be used when the dataset updates or is transferred to a different analysis environment, like a computational notebook. In this post, we discuss how we can capture reusable interactive workflows.

Can We Guess Why you Selected Something in a Scatterplot? 28 Oct 2022
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Selections are a key interaction in data visualization. They are used for highlighting and as the starting point for subsequent actions, including filters, group assignments, etc. Capturing the intent – WHY were these items selected? – can be used to help users refine their selections and to keep a meaningful history of the analysis process. This post discusses our paper...

Data Hunches – Recording and Communicating Personal Knowledge in Visualizations 11 Oct 2022
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Have you ever looked at data visualization and thought: that doesn't look right. Maybe you knew more about the data than is actually contained in the dataset. Did you then remember that hunch throughout your data analysis process, impacting your judgment and interpretation of the data? That thought, whether you were aware of it or not, possibly impacted your interpretation....

Loon – Finding the Right Cancer Drug with Microscopy and Visualization OR How to use Exemplars to Effectively Browse Large Complex Data Sources 27 Apr 2022
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In this blog post, we want to tell two stories: First, we want to explore how visualization can be used to select cancer treatments. And second, we want to tell a more technical story of how you can use exemplars to deal with large datasets that you can’t easily summarize.

Wait... I never signed up to be an economist 8 Dec 2021
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Conducting user studies to evaluate visualizations is a popular approach for evaluation. During the pandemic such user studies have migrated to crowdsourced platforms due to restrictions on in-person studies. Do we pay the participants in our studies fairly? Is it our job to do so? Our panel at IEEE VIS 2021, explored the above questions and many more.

Presenting in the time of COVID 1 Oct 2021
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Is recording a conference talk really any easier than giving one?

Manifesto for Putting "Chartjunk" in the Trash 2021! 19 Sep 2021
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As a research community, we have been using the imprecise term “chartjunk” in situations where other words would be a more precise, and kinder fit. In our manifesto, part of the alt.vis workshop at IEEE VIS 2021, we blur the boundaries between performance art, maintenance, and research as our first steps of putting chartjunk in the trash.

What you Can do in College to get into a CS PhD Program 21 Nov 2020
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Are you considering grad school? Here are a few steps you can take to maximize your chances. The bad news is that it’s best to start planning and working towards getting into grad school early: I recommend you take first steps some time at the end of your sophomore year in college. The good news is that the process is...

What we Should and Shouldn’t Change About the VIS Review Process 3 Nov 2020
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The review process at IEEE VIS hasn’t changed in the last decade. Here I lay out some suggestions to make the process more equitable, open, and to possibly raise the quality of reviews.

The Interpretivist Lens – What Design Study as a Method of Inquiry Can Teach Us. 30 Oct 2020
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Much of the current conducting and reporting on design studies leaves little room for contributions outside of the end tool or technique. An interpretivist approach embraces the messy, subjective nature of design studies and emphasizes the ways in which we can conduct research of this nature with rigor. In this post, we advocate for interpretivist design studies and give three...

Introducing Trrack – A Library for Tracking Provenance on the Web 28 Oct 2020
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Tracking a history of actions of an interactive visual analysis session (i.e., its provenance) has benefits ranging from simple undo/redo, to enabling reproducibility, to making post-hoc analysis of user sessions possible. However, there are no established provenance tracking libraries that visualization developers can use with their web-based tools. This blog post introduces Trrack – a web-based library designed for easy...

How Far Can We Push Crowdsourced Evaluation of Visualization Techniques? 23 Jul 2020
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Crowdsourcing is a popular method for conducting quantitative studies, yet up to now, the types of studies that were run on crowdsourcing platforms is narrow. In this blog post, we describe a method to evaluate complex visualization techniques in a crowdsourced setting, which we developed for a 2020 CHI paper on evaluating multivariate network visualization techniques.

State COVID-19 Dashboards 20 Jul 2020
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tldr: As states are navigating the influx of COVID data, they are using dashboards to communicate with their constituents. Although many states are doing a good job at collecting and sharing data in open data portals, dashboard quality varies a lot across states, and some have considerable room for improvement.

The Case Against Dashboards (when Visualizing a Pandemic) 6 Jul 2020
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tldr: Using dashboards comes with risks: they leave out critical context by over-simplifying and hence give false certainty. A more nuanced approach including interpreation by experts, and showing multiple perspectives is needed when visualizing data for something as complex as the COVID-19 pandemic.

Introducing the VDL Blog 6 Jul 2020

tldr: We're starting a blog to communicate about our research and share our thoughts on data visualization!

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