Hao Song

Results 2 issues of Hao Song

This PR aims to increase the number of supported kernels and associated operations. The objectives of the PR can be summarized as follows: - [x] Allow different kernels to be...

WIP

This PR implements the linear-time estimator in (Lemma14 in [paper](https://www.jmlr.org/papers/volume13/gretton12a/gretton12a.pdf)), as asked in #288.