3.1.3DC vs 3.1.3

What is rolling speed and shape functions

Rolling speed is part of his moving average algorithm, basically how much new values supersede older ones based on time.

I assume shape functions here he means the shape of the kernel function he uses.

Close. The shape functions are the nonlinear scalings I do on attributes before adding them to the tree.

Oooh, that makes more sense. :)

Shape functions are part of the distance function then.