2019

Modelling the influence of data structure on learning in neural networks: the hidden manifold model

Goldt, Sebastian, Mézard, Marc, Krzakala, Florent et al.

Understand

Understanding the reasons for the success of deep neural networks trained using stochastic gradient-based methods is a key open problem for the nascent theory of deep learning.

  • The types of data where these networks are most successful, such as images or sequences of speech, are characterised by intricate correlations.
  • Yet, most theoretical work on neural networks does not explicitly model training data, or assumes that elements of each data sample are drawn independently from some factorised probability distribution.
  • These approaches are thus by construction blind to the correlation structure of real-world data sets and their impact on learning in neural networks.

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