# Means

GaussianProcesses.MeanPeriodicType
MeanPeriodic <: Mean

Periodic 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.

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GaussianProcesses.MeanPolyType
MeanPoly <: Mean

Polynomial 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.

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