Professional Services:
I was a co-organizer of

"Challenges in Hierarchical Learning: Transfer Learning and Optimization,"
with Marc'Aurelio Ranzato, Ruslan Salakhutdinov, Andrew Y. Ng and Josh Tenenbaum.

I was / have been a reviewer of the following conferences and journals:

Conferences: ICML(2007,2008,2009,2010), NIPS(2008,2009,2010,2011), ECML(2007),
SIGIR(2008,2009), ICRA(2008,2009), IROS(2008,2009), SIGGRAPH Asia(2011)

Journals: JMLR, IEEE PAMI, IEEE TNNs, Machine Learning Journal, Journal of Information Retrieval

I was in the programme committee of the following workshops

Learning to Rank SIGIR (2007, 2008, 2009),

Structured Inputs/Structured Outputs workshops NIPS (2008),

Machine Learning for Graphs ECML (2006),

Deep Learning and Unsupervised Feature Learning NIPS (2010,2011),

Gesture Recognition Workshop CVPR (2011),

Unsupervised Transfer Learning Workshop ICML (2011),