Evaluating Free Rides and Observational Advantages in Set Visualizations

Effective Representation of Information: Generalizing Free Rides

In order to effectively communicate information, the choice of representation is important. Ideally, a representation will aid readers in making desired inferences. In this poster, we introduce the theory of observation: what it means for one statement to be observable from another. Using observability, we sketch a characterization of the observational advantages of one representation over anot...

Evaluating Information Visualizations

Evaluating Scientific Visualizations

Having nearly completed the development process for this exhibit, we have found that such scientific visualizations may benefit from different evaluative tools and practices than other computer-based interactives. This paper will describe our formative evaluation process to date. The ways in which the formative evaluation has failed are the most instructive, and the paper will look closely at w...

Scalable Set Visualizations

This report documents the program and outcomes of Dagstuhl Seminar 17332 “Scalable Set Visualizations”, which took place August 14–18, 2017. The interdisciplinary seminar brought together 26 researchers from different areas in computer science and beyond such as information visualization, human-computer interaction, graph drawing, algorithms, machine learning, geography, and life sciences. Duri...

Evaluating Visualizations of Geospatial Uncertainty

Many techniques have been proposed for visualizing uncertainty in geospatial data. However previous empirical research on the effectiveness of visualizations of geospatial uncertainty has focused on user intuitions rather than objective measures of performance when reasoning under uncertainty (MacEachren, et. al, 2012). In two experiments, we examined the effectiveness of four alternative visua...