[Colloquium] REMINDER: Talks at TTIC tomorrow at noon!

[Dawn Ellis]

When:     Friday, November 8th at Noon

Where:    TTIC, 6045 S Kenwood Avenue, 5th Floor, Room #526

Who:       TTIC Faculty:  Francesco Orabona

Title:       Adaptation in Online Learning through Dimension-free
              Exponentiated Gradient

Abstract:

As the big data paradigm is gaining momentum, learning algorithms
trained through fast stochastic gradient descent methods are becoming
the de-facto standard in the industry world. Still, even these simple
procedures cannot be used completely "off-the-shelf" because
parameters, e.g. the learning rate, has to be properly tuned to the
particular problem to achieve fast convergence.

The online learning framework is a powerful tool to design fast
learning algorithms able to work in both the stochastic and
adversarial setting.
In this talk I will introduce new advancements in the time-varying
regularization framework for online learning, that allows to derive
almost parameter-free adaptive algorithms. In particular, I will focus
on a new algorithm based on a dimension-free exponentiated gradient.
Contrary to the existing online algorithms, it achieves an optimal
regret bound, up to logarithmic terms, without any parameter nor any
prior knowledge about the optimal solution.


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Research at TTIC Seminar Series

TTIC is hosting a weekly seminar series presenting the research currently
underway at the Institute. Every week a different TTIC faculty member will
present their research.  The lectures are intended both for students
seeking research topics and adviser, and for the general TTIC and
University of Chicago communities interested in hearing what their
colleagues are up to.

To receive announcements about the seminar series, please subscribe to the
mailing list: https://groups.google.com/a/ttic.edu/group/talks/subscribe

Speaker details can be found at: http://www.ttic.edu/tticseminar.php.

For additional questions, please contact David McAllester at
mcallester at ttic.edu

-- 
*Dawn Ellis*
Administrative Coordinator,
Bookkeeper
773-834-1757
dellis at ttic.edu

TTIC
6045 S. Kenwood Ave.
Chicago, IL. 60637
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