Where nominal data must need be used , the ideal is to use `` hard '' , objective criteria for assigning the classifications -LRB- see Operational definition -RRB- , such that different classifiers would produce the same assignments .

Where data must need be used , the ideal is to use `` hard '' , `` objective '' criteria for assigning the classifications -LRB- see definition -RRB- , such that different classifiers would produce the same assignments .
