changes in SGD
Merge branch 'devel' of github.com:SheffieldML/GPy into devel
Merge branch 'devel' of github.com:SheffieldML/GPy into devel
Merge branch 'devel' of github.com:SheffieldML/GPy into devel
minor SGD changes
test
cross-terms
Merge branch 'devel' of github.com:SheffieldML/GPy into devel