Uncertainty Analysis of Knowledge Reductions in Rough Sets

Table 3

Five different reduct objections.

Year	Authors	Reduction objection	Reduction function
1982	Pawlak [2]	Positive region	(D) = (D)
1997	Miao [4]	Mutual information
2000	Slezak [5]	Distribution	(x) = (x)
2001	Kryszkiewicz [6]	General decision
2009	Miao et al. [3]	Boundary Partition	IND = IND