I lead the Data Science Research team in Yahoo Research working on natural language process, machine learning and visualization. Before joining Yahoo
I was a member of the Information Visualization department at AT&T Labs -- Research, working on graph and text visualization, machine learning and numerical algorithms.
From 2001 to 2007, I worked at Wolfram Research, developing numerical and graph theoritical software. Prior to April 2001, I worked in the
Computational Science and Engineering Department
Daresbury Laboratory, conducting research in algorithms for high performance computing. For further chronological details, see here.