Stephane Mallat (ENS, France)

Event Date: 

Friday, February 9, 2018 - 2:00pm to 3:00pm

Event Location: 

  • Buchanan 1920 - UC Santa Barbara
  • Distinguished Lecture Series in Data Sciences
Title: Learning Physics with Deep Neural Networks
Abstract: Machine learning amounts to find low-dimensional models governing the properties of high dimensional functionals. This could almost be called physics.  Algorithms have considerably improved in the last 10 years through the processing of massive amounts of data. In particular, deep neural network have spectacular applications, to image classification, medical, industrial and physical data analysis.
We show that the approximation capabilities of deep convolution networks come from their ability to compute invariant at different scales over possibly high-dimensinal groups including diffeormophisms. We shall study the mathematical properties of simplified deep convolutional networks computed with wavelet. We give applications to  regression of molecular energies in quantum chemistry. We shall also introduce low-dimensional non-Gaussian intermittent models for statistical physics, with applications to Ising and high Reynold turbulences through cosmological data.