Haggai Roitman  Haggai Roitman photo       

contact information

Lead Researcher & Master Inventor - Information Retrieval
IBM Haifa Research Lab, Haifa, Israel


Professional Associations

Professional Associations:  ACM SIGIR


Hi there!

I'm a lead researcher and a master inventor at IBM Research - Haifa (HRL), a member of the information retrieval research group (Cognitive Analytics & Solutions).

My research interests include Information Retrieval, Social Media, Recommender Systems and Semantic Web.

My main research focus these days is on core IR problems (e.g., Ranking, Passage Retrieval for QA, Fusion and Distributed Search, Query Performance Prediction) and emerging Cognitive IR applications (Dynamic IR and Session Search, NLG, Conversational IR and Dialog).

I have published more than 50 related academic papers and 40 related patents. I'm actively involved in the research community, including the organization of several related workshops, PC memberships and reviews in leading conferences and journals.

I serve as HRL's Knowledge PIC co-chair.

I'm an adjunct lecturer in the CS department in the University of Haifa.

I received the B.Sc degree (2004) in information systems engineering and the Ph.D (2008) degree in information management engineering under the supervision of Prof. Avigdor Gal, both from the Technion - Israel Institute of Technology.