About Me

I'm a PhD candidate in the MIT Department of Brain and Cognitive Sciences, supervised by Josh Tenenbaum. My research centers on structured Bayesian modelling for concept learning and perception, both with the goal to develop better computational models of human cognition and to develop more interpretable and robust machine intelligence. My technical interests include probabilistic programming (for specifying knowledge) and deep learning and meta-evolutionary algorithms (for using it).

That said, I'm increasingly worried about the implications of stronger machine intelligence, and the ways that it's likely be used by the society it comes of age in. I think it's well-justified to be concerned about things like unemployment, data privacy and computational propaganda, and particularly their interaction against the rising backdrop of economic inequality and authoritarian politics. If you're thinking about how to improve the prospects of AI as a force for good in the world, I'd love to hear from you.

You can contact me at lbh@mit.edu or lhewitt@protonmail.com


Memoised wake-sleep: paper (UAI 2020)
with Tuan Anh Le, Josh Tenenbaum

SketchAdapt: paper (ICML 2019)
with Max Nye, Josh Tenenbaum, Armando Solar-Lezama

Inferring Structured Visual Concepts from Minimal Data: paper (CogSci 2019)
with Peng Qian, Josh Tenenbaum, Roger Levy

Variational Homoencoder: GitHubpaperoral presentation (UAI 2018)
with Max Nye, Andreea Gane, Tommi Jaakkola, Josh Tenenbaum

Bayesian Auditory Scene Analysis: websitepaperoral presentation (CogSci 2018)
with Maddie Cusimano, Josh Tenenbaum, Josh McDermott



Tutorial on Bayesian Inference In Generative Models: video (CBMM, 2018)
with Maddie Cusimano

Deep Learning & Art projects: Gen Studio @ The Met (2019)Mind the Machine (2017)
with Sarah Schwettmann, Maddie Cusimano

Some old writing on AI: [thinking machines]

Predicting emojis [ 🤪 ]
with SwiftKey


Awards & Fellowships

2019 Walle Nauta Award for Continued Dedication to Teaching, MIT
2018 Angus MacDonald Award for Excellence in Undergraduate Teaching, MIT
2017 Angus MacDonald Award for Excellence in Undergraduate Teaching, MIT
2016 Second place finalist, Flame Challenge for science communication.
2015-2017 Henry E. Singleton (1940) Fellowship, MIT
2015 Dean’s List Commendation for Outstanding Academic Performance, UCL
2014 Vacation Bursary Award, Engineering and Physical Sciences Research Council