Relax condition on inputs for kernelmatrix

Author: theogf

src/matrix/kernelmatrix.jl

@@ -89,7 +89,7 @@ function kernelmatrix(κ::SimpleKernel, x::AbstractVector)
 end
 
 function kernelmatrix(κ::SimpleKernel, x::AbstractVector, y::AbstractVector)
-    validate_dims(x, y)
+    validate_inputs(x, y)
     return map(d -> kappa(κ, d), pairwise(metric(κ), x, y))
 end
 

src/utils.jl

@@ -118,7 +118,9 @@ function validate_inplace_dims(K::AbstractVector, x::AbstractVector)
     end
 end
 
-function validate_dims(x::AbstractVector, y::AbstractVector)
+validate_inputs(x, y) = nothing
+
+function validate_inputs(x::V, y::V) where {V<:Union{RowVecs, ColVecs}}
     if dim(x) != dim(y)
         throw(DimensionMismatch(
             "Dimensionality of x ($(dim(x))) not equality to that of y ($(dim(y)))",