2011

Kernels for Vector-Valued Functions: a Review

Alvarez, Mauricio A., Rosasco, Lorenzo, Lawrence, Neil D.

Understand

Kernel methods are among the most popular techniques in machine learning.

  • From a frequentist/discriminative perspective they play a central role in regularization theory as they provide a natural choice for the hypotheses space and the regularization functional through the notion of reproducing kernel Hilbert spaces.
  • From a Bayesian/generative perspective they are the key in the context of Gaussian processes, where the kernel function is also known as the covariance function.
  • Traditionally, kernel methods have been used in supervised learning problem with scalar outputs and indeed there has been a considerable amount of work devoted to designing and learning kernels.

Reading the bibliography…