Dang, TommyNguyen, Huyen N.Pham, VungJohansson, Jimmy and Sadlo, Filip and Marai, G. Elisabeta2019-06-022019-06-022019978-3-03868-090-1https://doi.org/10.2312/evs.20191178https://diglib.eg.org:443/handle/10.2312/evs20191178This paper introduces WordStream, an interactive visual tool for the demonstration of topic evolution. Our approach utilizes the two popular techniques. Word clouds are designed to give an engaging visualization of text via font sizes and colors, while stacked graphs are a common method for visualizing topic evolution. In particular, WordStream emphasizes essential terms chronologically and spatially. To show the usefulness of WordStream, we demonstrate its applications on various data sets, including the Huffington Post and IEEE VIS publications.10.2312/evs.20191178103-107