ACM_Citations
    • USA-2011

      For contributions to machine learning and natural language processing.

    Experience
    Education
    Bio
    My research focuses on the computational foundations of intelligent behavior. We develop theories and systems pertaining to intelligent behavior using a unified methodology -- at the heart of which is the idea that learning has a central role in intelligence.
    My work centers around the study of machine learning and inference methods to facilitate natural language understanding. In doing that I have pursued several interrelated lines of work that span multiple aspects of this problem - from fundamental questions in learning and inference and how they interact, to the study of a range of natural language processing (NLP) problems. Over the last few years the focus of my natural language understanding work has been the development of constrained conditional models -- an integer linear programming formulation for (jointly) learning and supporting global inference. Within this framework we have studied fundamental learning and inference issues -- from learning with indirect supervision to response driven learning to decomposed learning to amortized inference -- and addressed multiple problems in semantics and information extraction. In particular, we developed state of the art solutions and systems for semantic role labeling, co-reference resolutions, and textual entailment as well as named entity recognition, Wikification and other information extraction problems. A lot of my recent work has also emphasized the notion of incidental supervision as a way to get around the inherent difficulty in supervising complex problems. I have also worked on fundamental problems in Natural Language Acquisition, ESL, and Information Trustworthiness. Over the last decade we have also developed a declarative Learning Based Programming language, LBJava, for the rapid development of software systems with learned components; we are currently working on Saul, a next generation Declarative Learning Based Program.