I am a Research Scientist at MIT CSAIL and work with the Decentralized Information Group (DIG) group. Before this, I was a postdoctoral associate at MIT supervised by Tim Berners-Lee.

I received my PhD (advisor Tim Finin) and M.S. degrees from the University of Maryland, Baltimore County where I worked with the Ebiquity group on various aspects of trust, security, and general policy management in dynamic distributed environments such as the Semantic Web, multi-agent systems, and pervasive computing systems. My thesis involved developing Rei, a policy language based on a rule extension of OWL for distributed systems.

My current research focus is on policy-based distributed frameworks and protocols for access control on the Web and on improving transparency and accountability of knowledge inference across heterogeneous information systems.