I am an Assistant Professor in Computer Science at Johns Hopkins University, with a secondary appointment in Cognitive Science. I am a member of the Center for Language and Speech Processing (CLSP) and lead Natural Language Understanding research at the Human Language Technology Center of Excellence (HLTCOE). My work focuses on knowledge acquisition, how to inform machines about the world. This might be specific things (e.g., Johns Hopkins University is located in the city of Baltimore), or general background knowledge (e.g., Universities are attended by students, and are sometimes located in cities).
This research may involve topics in natural language processing, data mining, social media analysis, machine learning, linguistic semantics, or generally most things Artificial Intelligence or Cognitive Science. With my students and other colleagues I attempt to extract structure from text, design algorithms and data structures for working with large collections of data, and worry about understanding how people convey knowledge through language.
Some of our work leads to neat demonstration systems. Here’s an example: Entity Recommendation and Summarization, building on efforts by Rastogi, Harman, Wolfe, Carrell, and others (see Tinkerbell and CADET articles for more details).
Our work in decompositional semantics is organized at Decomp.net.