Source: wikibot/rational-quadratic-covariance-function
= Rational quadratic covariance function
{wiki=Rational_quadratic_covariance_function}
The rational quadratic covariance function is a type of covariance function commonly used in Gaussian processes and spatial statistics. It is a generalization of the squared exponential (or Gaussian) covariance function and is particularly useful for modeling data with varying levels of smoothness.