Correct MaternKernel docstring on lengthscale
@@ -23,7 +23,7 @@ class MaternKernel(Kernel):
where
- * :math:`d = (\mathbf{x_1} - \mathbf{x_2})^\top \Theta^{-1} (\mathbf{x_1} - \mathbf{x_2})`
+ * :math:`d = (\mathbf{x_1} - \mathbf{x_2})^\top \Theta^{-2} (\mathbf{x_1} - \mathbf{x_2})`
is the distance between
:math:`x_1` and :math:`x_2` scaled by the :attr:`lengthscale` parameter :math:`\Theta`.
* :math:`\nu` is a smoothness parameter (takes values 1/2, 3/2, or 5/2). Smaller values are less smooth.
