I have asked this question on Computer Science S.E. :
I'm willing to know how to declare a collection or set of vectors mapped depending an Oriented Object class. Its instance objects (that each are one vector) have many variables members, not all being of $\mathbb{R}$→double, float kind.
Is it eligible for Cross Validation S.E.?
Or may I risk again to be asked to submit it elsewhere? Another choice could be Data Science S.E., maybe.
Thanks!