laurent

Laurent Charlin

Email: lcharlin [at] cs [dot] columbia [dot] edu
[PGP key]

[papers]  [talks]  [projects]  [press]  [CV]

I am a Postdoc in David Blei's group at Columbia University.

My recent work has focussed on using machine learning models and decision theory to extend the capabilities of recommender systems. I have particular interest in developping novel probabilistic graphical models.

I have also done work in reasoning/decision-making under uncertainty (see below) and I'm generally interested in applying learning methods to different problems.

I graduated with a PhD in the machine learning group at the University of Toronto. I was co-advised by Craig Boutilier and Rich Zemel.

Before that I graduated with a Master's at the University of Waterloo (Canada) in the AI group of the CS school, in December 2006. My work, under the supervision of Pascal Poupart, focused on discovering abstractions in planning problems modelled as partially observable Markov decision processes (POMDPs). For more information, look at our NIPS '07 paper (or at my Master's thesis).


Papers:

Master's Thesis:
  • Automated Hierarchy Discovery for Planning in Partially Observable Domains,
    Master's Thesis, School of Computer Science, University of Waterloo, December 2006.
    [ps] [ps.gz] [pdf] [bibtex]

Projects:

  • Rich Zemel and I have developed a system to help match reviewers to papers for conferences. The system is now used by several of the leading machine learning and computer vision conferences.
    For more information check out: Toronto Paper Matching System

Press:

  • Our research about active learning for matching problems, and especially its links to online dating, was briefly featured in the UofT Magazine:
    Computer Says No

Selected Talks:

  • Intelligent-environments group (CREI), Université de Sherbrooke - 02/2013.
  • AdaComp seminar, National University of Singapore (NUS) - Hierarchical POMDP Controller Optimization by Likelihood Maximization, 11/2008.
  • Reinforcement Learning seminar, McGill University - Hierarchical POMDP Controller Optimization by Likelihood Maximization, 11/2008.
  • Machine Learning Seminar, TU-Berlin, Germany - Automated Hierarchy Discovery for Planning in Partially Observable Environments, 07/2007.
  • MITACS Machine Learning Seminar, McGill University - Automated Hierarchy Discovery for Planning in Partially Observable Environments, 05/2007.
  • CoGS Seminars, University of Toronto, Automated Hierarchy Discovery for Planning in Partially Observable Environments, 02/2007.
  • AI seminar, University of Waterloo - Automated Hierarchy Discovery for Planning in Partially, 01/2007.
Last updated: January 2015