What would have happened if one would filter the ICA components and then transform them back to the original space?
The inverse of the weights (“patterns”) would not be valid in some sense…
What do you think about this genuine idea?
(Was asked about the possibility to filter components before mapping them back)
Obviously- it would make sense to filter ICA components if one sticks with the ICA space, but filtering and mapping back sounds slightly undefined to me…
What do you think?