I am a Senior Researcher at Microsoft Research, Redmond. I study search interaction and develop tools to help people search more effectively. I am a member of the CLUES group. Microsoft Lync shipped our IM an Expert system. Download: Installer|Documentation. Our book entitled "Exploratory Search: Beyond the Query-Response Paradigm" was published in 2009 by Morgan & Claypool. Order: Morgan & Claypool|Amazon|Barnes & Noble

I co-organize the annual Human-Computer Information Retrieval (HCIR) Symposium. HCIR 2012 will be held on 4-5 October 2012 at IBM Research in Cambridge, MA.

I serve as an Associate Editor for ACM Transactions on Information Systems (TOIS) and for ACM Transactions on the Web (TWEB).

We received a SIGCHI 2011 Best Paper Award for our research paper entitled "Effects of Community Size and Contact Rate in Synchronous Social Q&A".

We received the SIGIR 2010 Best Paper Award for our research paper entitled "Assessing the Scenic Route: Measuring the Value of Search Trails in Web Logs".

We received the SIGIR 2007 Best Paper Award for our research paper entitled "Studying the Use of Popular Destinations to Enhance Web Search Interaction".

I received the British Computer Society's Distinguished Dissertation Award for the best Computer Science PhD dissertation in the United Kingdom for 2005.