Means
GaussianProcesses.MeanConst — TypeMeanConst <: MeanConstant mean function
\[m(x) = β\]
with constant $β$.
GaussianProcesses.MeanLin — TypeMeanLin <: MeanLinear mean function
\[m(x) = xᵀβ\]
with linear coefficients $β$.
GaussianProcesses.MeanPeriodic — TypeMeanPeriodic <: MeanPeriodic mean function
\[m(x) = a'cos(2πx/p) + b'sin(2πx/p)\]
with polynomial coefficients $βᵢⱼ$ of shape $d × D$ where $d$ is the dimension of observations and $D$ is the degree of the polynomial.
GaussianProcesses.MeanPoly — TypeMeanPoly <: MeanPolynomial mean function
\[m(x) = ∑ᵢⱼ βᵢⱼxᵢʲ\]
with polynomial coefficients $βᵢⱼ$ of shape $d × D$ where $d$ is the dimension of observations and $D$ is the degree of the polynomial.
GaussianProcesses.MeanZero — TypeMeanZero <: MeanZero mean function
\[m(x) = 0.\]