Suzuki, Daiji - Mathematics of Deep Learning

hillbig Theoretical analysis of deep learning by Dr. Daiji Suzuki, especially on representation capability, generalization capability, and optimization theory. He covers a wide range of important topics, including the latest Neural Tangent Kernel and dual effect. I don't think there is anything as comprehensive as this in English.

• Daisuke Okanohara

I get an error when I access the original Slideshare, I can see it on X/Twitter, cache?

• Kolmogorov's addition theorem
• universal approximation
• Ridgelet conversion
• Number of representations and layers

As an easy-to-understand concrete example, in the case of a function whose value is determined by the distance from the origin, four layers would be of polynomial order with respect to the number of dimensions (I think it's linear, frankly).

• Kernel Method and Ridge Regression

• regenerative nuclear hillbelt space I'm redescribing the kernel ridge regression in terms of the idea of a regenerative nuclear Hilbert space, but I'll skip that part. Deep learning can be interpreted as learning the kernel function itself in accordance with the data. ...

• double-drop

• implicit regularization

Generalization error bound

• skip this spot

Approximation performance by function class

• piecewise smooth function mixed-smoothness

• kernel ridge regression
• adaptive method
  • deep learning
  • sparse estimation
    • I guess if you have too many things to prepare in advance, it becomes impractical.

Bezov space

The various function classes mentioned in past discussions are special cases of [Bezov space

→Sparsity.

• Deep NN can approximate the source in Besov space

• Cardinal B-spline can be well approximated by ReLU-NN

• Deep learning is superior when spatial smoothness is non-uniform

• Mixed-smooth Besov space

• Non-probabilistic gradient method takes exponential time to get out of the saddle point.

Neural Tangent Kernel Mean Field

• Watterstein Distance

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