Formatting details

Author: theogf

src/kernels/exponential.jl

@@ -49,7 +49,7 @@ The γ-exponential kernel is an isotropic Mercer kernel given by the formula:
 """
 struct GammaExponentialKernel{Tγ<:Real} <: BaseKernel
     γ::Vector{Tγ}
-    function GammaExponentialKernel(;gamma::T=2.0,γ::T=gamma) where {T<:Real}
+    function GammaExponentialKernel(;gamma::T=2.0, γ::T=gamma) where {T<:Real}
         @check_args(GammaExponentialKernel, γ, γ >= zero(T), "γ > 0")
         return new{T}([γ])
     end

src/kernels/matern.jl

@@ -8,15 +8,20 @@ For `ν=n+1/2, n=0,1,2,...` it can be simplified and you should instead use [`Ex
 """
 struct MaternKernel{Tν<:Real} <: BaseKernel
     ν::Vector{Tν}
-    function MaternKernel(;nu::T=1.5,ν::T=nu) where {T<:Real}
+    function MaternKernel(;nu::T=1.5, ν::T=nu) where {T<:Real}
         @check_args(MaternKernel, ν, ν > zero(T), "ν > 0")
         return new{T}([ν])
     end
 end
 
 @inline function kappa(κ::MaternKernel, d::Real)
     ν = first(κ.ν)
-    iszero(d) ? one(d) : exp((one(d)-ν)*logtwo-logabsgamma(ν)[1] + ν*log(sqrt(2ν)*d)+log(besselk(ν,sqrt(2ν)*d)))
+    iszero(d) ? one(d) :
+    exp(
+        (one(d) - ν) * logtwo - logabsgamma(ν)[1] +
+        ν * log(sqrt(2ν) * d) +
+        log(besselk(ν, sqrt(2ν) * d))
+    )
 end
 
 metric(::MaternKernel) = Euclidean()
@@ -30,7 +35,7 @@ The matern 3/2 kernel is an isotropic Mercer kernel given by the formula:
 """
 struct Matern32Kernel <: BaseKernel end
 
-kappa(κ::Matern32Kernel, d::Real) = (1+sqrt(3)*d)*exp(-sqrt(3)*d)
+kappa(κ::Matern32Kernel, d::Real) = (1 + sqrt(3) * d) * exp(-sqrt(3) * d)
 
 metric(::Matern32Kernel) = Euclidean()
 
@@ -43,6 +48,6 @@ The matern 5/2 kernel is an isotropic Mercer kernel given by the formula:
 """
 struct Matern52Kernel <: BaseKernel end
 
-kappa(κ::Matern52Kernel, d::Real) = (1+sqrt(5)*d+5*d^2/3)*exp(-sqrt(5)*d)
+kappa(κ::Matern52Kernel, d::Real) = (1 + sqrt(5) * d + 5 * d^2 / 3) * exp(-sqrt(5) * d)
 
 metric(::Matern52Kernel) = Euclidean()

src/kernels/rationalquad.jl

@@ -8,7 +8,7 @@ where `α` is a shape parameter of the Euclidean distance. Check [`GammaRational
 """
 struct RationalQuadraticKernel{Tα<:Real} <: BaseKernel
     α::Vector{Tα}
-    function RationalQuadraticKernel(;alpha::T=2.0,α::T=alpha) where {T}
+    function RationalQuadraticKernel(;alpha::T=2.0, α::T=alpha) where {T}
         @check_args(RationalQuadraticKernel, α, α > zero(T), "α > 1")
         return new{T}([α])
     end
@@ -29,7 +29,7 @@ where `α` is a shape parameter of the Euclidean distance and `γ` is another sh
 struct GammaRationalQuadraticKernel{Tα<:Real, Tγ<:Real} <: BaseKernel
     α::Vector{Tα}
     γ::Vector{Tγ}
-    function GammaRationalQuadraticKernel(;alpha::Tα=2.0,gamma::Tγ=2.0,α::Tα=alpha, γ::Tγ=gamma) where {Tα<:Real, Tγ<:Real}
+    function GammaRationalQuadraticKernel(;alpha::Tα=2.0, gamma::Tγ=2.0, α::Tα=alpha, γ::Tγ=gamma) where {Tα<:Real, Tγ<:Real}
         @check_args(GammaRationalQuadraticKernel, α, α > one(Tα), "α > 1")
         @check_args(GammaRationalQuadraticKernel, γ, γ >= one(Tγ), "γ >= 1")
         return new{Tα, Tγ}([α], [γ])