Cost-Sensitive Attribute Reduction in Decision-Theoretic Rough Set Models

Table 2

An example decision system.

	𝑎1	𝑎2	𝑎3	𝑎4	𝑎5	𝑎6	𝐷
𝑥1	1	1	1	1	1	1	𝑑1
𝑥2	1	0	1	0	1	1	𝑑1
𝑥3	0	1	1	1	0	0	𝑑2
𝑥4	1	1	1	0	0	1	𝑑2
𝑥5	0	0	1	1	0	1	𝑑2
𝑥6	1	0	1	0	1	1	𝑑3
𝑥7	0	0	0	1	1	0	𝑑3
𝑥8	1	0	1	0	1	1	𝑑3
𝑥9	0	0	1	1	0	1	𝑑3