Your paraphrase of "COMPARISON" is better, and what Sim and I would associate with "perspective". A person whose preferred information gathering perspective is one of making comparisons.
I believe Berens' best descriptions of the functions are the little script one-liners that appear on the top of the pages of that booklet.
The Philosophy of Life that engages Introverted Sensing:
There is always a comparison to be made, and if it is familiar it is to be trusted"
So "philosophy of life" would be like "perspective" or "world-view", and there you have your "comparison".