I am generalizing geological map, for initial process I am dealing with small polygons which are less than minimum separability unit and try either remove them or enlarge. For the first step I am converting geological map scale 1:25 000 to map scale 1:50 000 scale.
Based on the theory we have less space for the same amount of features, and some of them should be eliminated based on area, importance and etc. Here, question is, what amount of features should be kept to the successive map scale.
I have slight memory from my old Cartography class that 25% of overall features should be maintained, though I could not find proper reference to link it with the fact.
Does anyone know about this rather simple but important issue?