score = (x) -> 
  if x == "Yes"
    10
  else
    0
  
weights = [0.25, 0.25, 0.25, 0.25]
anti_bribery_anti_corruption = [policy, process, in_contractual_agreements, compaint_mechanism]

weights.reduce((weighted_sum, weight, index) -> 
              weighted_sum + weight*score(anti_bribery_anti_corruption[index])
             , 0)