Bard College Visit
Dr. Amy Krakowka, MAJ Dylan Malcomb, and Kristine Ringler met with Bard College faculty last month to discuss the Department of Geography & Environmental Engineering’s research on Water Vulnerability in Africa. The USMA researchers met with Econometrics and Political Scientists Professors at Bard to form a collaboration effort among institutions.
Network Science Center Presentation
Dr. Luke Gerdes gave a talk to West Point faculty and cadets on “Data Transformation and Centrality”. Dr. Gerdes is a Minerva fellow working on the Southeast Asia Minerva project. He discussed how bi-partite data is often encountered when working with real-world networks. Examples include networks that show terrorists' participation in attacks, networks that record soldiers' positions at geo-locations, networks that describe consumers' purchase of products, and networks that reconcile twitter-users to the hashtags they follow. Because standard network measures can only assess data that contains a single type of actor, analysts typically transform such bi-partite data into single mode networks (e.g. agent x agent and event x event networks) prior to analysis. However, the effects of such transformation are often deterministic; different approaches produce conflicting node-level results. This presentation explored the analytic impact of adopting various transformation methods, for both binary and weighted bi-partite data. This presentation also described how one transformation method can be utilized for form a new measure of centrality that characterizes leader-follower dynamics.