Returns the leave-one-out conditional likelihood of the data.
If func is not equal to the default, what’s calculated is a function of the leave-one-out conditional likelihood.
Parameters: | bw: array_like :
func: callable, optional :
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Returns: | L: float :
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Notes
Similar to KDE.loo_likelihood`, but substitute ``f(y|x)=f(x,y)/f(y) for f(x).