[Colloquium] Today- Geoffrey Hinton (Univ. of Toronto) 1-3pm Distinguished Lecture Series
Christina Novak
cnovak at tti-c.org
Mon Jan 26 08:57:00 CST 2009
Good morning,
We hope to see you at the lecture this afternoon!
Sincerely,
David McAllester
TTI-C Chief Academic Officer
For questions about the TTI-C Distinguished Lecture Series, please contact:
Chrissy Novak cnovak at tti-c.org or (773)834-2216.
Monday, January 26th, 2009 (1-3pm)
Geoffrey Hinton (University of Toronto)
"Recent Developments in Learning Deep Networks"
Abstract:
I will start by describing an efficient, modular, unsupervised learning
procedure for deep generative models that contain millions of parameters and
many layers of hidden features. The features are learned one layer at a
time without any information about the final goal of the system. This
approach leads to excellent generative models of handwritten digits.
I will then describe three recent improvements. First, I will describe a
better learning algorithm for the module that is used to learn each layer of
features greedily. Then I will describe a more powerful type of generative
module that contains multiplicative interactions so that hidden units at one
level can switch in pairwise interactions between hidden units at the level
below.
Finally I will describe an application to recognizing stereo images of 3-D
objects from the NORB database. For this task, deep belief nets outperform
the best published results.
Lecture will be held from 1:00- 3:00pm
Location is at the University of Chicago International House (Assembly Hall)
1414 E. 59th St. Chicago, IL 60637
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