Visualizing Change over Time Using Dynamic Hierarchies: TreeVersity2 and the StemView

摘要: To analyze data such as the US Federal Budget or characteristics of student population a University it is common to look for changes over time. This task can be made easier and more fruitful if analysis performed by grouping attributes, Agencies, Bureaus Accounts Budget, Ethnicity, Gender Major in University. We present TreeVersity2, web based interactive visualization tool that allows users change datasets creating dynamic hierarchies on attributes. TreeVersity2 introduces novel space filling (StemView) represent trees at multiple levels - not just leaf level. With this explore absolute relative changes, created removed nodes, each node's actual values, while maintaining context tree. In addition, provides overviews entire time period, reporting lists outliers textual form, which helps identify major without having manually setup filters. validated with 12 case studies organizations diverse National Cancer Institute, Drug Administration, Department Transportation, Office Bursar Maryland, eBay. Our demonstrated flexible enough used different domains provide useful insights owners. A demo found https://treeversity.cattlab.umd.edu.