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  4. Preconditioned Spectral Descent for Deep Learning
 
conference paper not in proceedings

Preconditioned Spectral Descent for Deep Learning

Carlson, David
•
Collins, Edo
•
Hsieh, Ya-Ping  
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2015
29-th Neural Information Processing Systems (NIPS)

Deep learning presents notorious computational challenges. These challenges in- clude, but are not limited to, the non-convexity of learning objectives and estimat- ing the quantities needed for optimization algorithms, such as gradients. While we do not address the non-convexity, we present an optimization solution that exploits the so far unused “geometry” in the objective function in order to best make use of the estimated gradients. Previous work attempted similar goals with precon- ditioned methods in the Euclidean space, such as L-BFGS, RMSprop, and ADA- grad. In stark contrast, our approach combines a non-Euclidean gradient method with preconditioning. We provide evidence that this combination more accurately captures the geometry of the objective function compared to prior work. We theo- retically formalize our arguments and derive novel preconditioned non-Euclidean algorithms. The results are promising in both computational time and quality when applied to Restricted Boltzmann Machines, Feedforward Neural Nets, and Convolutional Neural Nets.

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Type
conference paper not in proceedings
Author(s)
Carlson, David
Collins, Edo
Hsieh, Ya-Ping  
Carin, Lawrence
Cevher, Volkan  orcid-logo
Date Issued

2015

Subjects

Deep Learning

•

Spectral Descent

•

Preconditioning

•

ml-ai

Editorial or Peer reviewed

REVIEWED

Written at

EPFL

EPFL units
LIONS  
Event nameEvent date
29-th Neural Information Processing Systems (NIPS)

2015

Available on Infoscience
September 8, 2015
Use this identifier to reference this record
https://infoscience.epfl.ch/handle/20.500.14299/117656
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