DOC Add kernel glossary
@@ -1492,7 +1492,13 @@ functions or non-estimator constructors.
``cv`` values are validated and interpreted with :func:`utils.check_cv`.
``kernel``
- TODO
+ Specifies the kernel function to be used by Kernel Method algorithms.
+ For example, the estimators :class:`SVC` and
+ :class:`GaussianProcessClassifier` both have a ``kernel`` parameter
+ that takes the name of the kernel to use as string or a callable
+ kernel function used to compute the kernel matrix. For more reference,
+ see the :ref:`kernel_approximation` and the :ref:`gaussian_process`
+ user guides.
``max_iter``
For estimators involving iterative optimization, this determines the
