Approximate Accuracy Approaches to Attribute Reduction for Information Systems

Table 1

Incomplete information system.

𝑈	𝑎	𝑏	𝑐	𝑑	𝑒
𝑋1	1	1	1	0	1
𝑋2	1	1	1	*	1
𝑋3	1	1	*	0	1
𝑋4	1	0	1	0	0
𝑋5	1	1	0	1	0
𝑋6	*	0	*	1	0
𝑋7	1	0	*	1	2
𝑋8	0	1	0	1	2