I gathered many themes and adjusted them to 4 factor map.
With these 4 factor maps, I created my score map using "Map calculate"
and "Reclassify". When I used "Map calculate", I gave
different value to each factor. I thought topo-slope was most important
(so I multiply 3 times), accessibility is next (2 times). My calculation
is as below
(topo-slope*3)+(accessibility*2)
+(noise)+(closeness of institute)
After calculation, I reclassified to 5 gredient, best to
worst