Slides from my presentation at JCDL 2007. The paper was titled "World Explorer: Visualizing Aggregate Data from Unstructured Text in Geo-Referenced Collections" and won the Vannevar Bush Best Paper award. You can read the full paper at http://www.rahulnair.net/files/JCDL07-ahern-WorldExplorer.pdf and also see a demo at http://tagmaps.research.yahoo.com/worldexplorer.php