Tim Vieira


I develop machine learning algorithms for tough problems—tending toward natural language processing applications. When I'm not in front of a whiteboard or computer, I'm probably climbing things, walking around on my hands, eating delicious vegetarian food, or hanging out with Hanna Wallach.

I'm working on my PhD with Jason Eisner. We're using reinforcement learning to speedup inference algorithms and developing the Dyna programming language. You can read more about our current proposal here! I also collaborate with my labmate Ryan Cotterell.

I've also worked with Andrew McCallum on Rexa and Factorie; Dan Roth on Textual Entailment.


I move: jump, climb, balance, invert, you name it.

Follow my antics on Instagram.

Roller Derby

My alter ego, Mr. Sprinkles, played roller derby for 3 years.


In high school, I was big into snakeboarding.


The 5th Ave - my gorgeous '84 Fifth Ave purchased - installed the hydraulics myself!
The Big Bad Baby Blue Buick - hydraulics and gold spinning wheels.


Technical blog: Graduate Descent. Twitter: @xtimv.


Google Scholar profile