Research Article

Uncertainty Analysis of Knowledge Reductions in Rough Sets

Table 1

Road traffic accident table.

InstantCondition attributesDecision attribute
abcdefg

1NNNGGNN
2YNNGGNS
3YYNGGNS
4YYNGGNS
5YYNGGNN
6YYNGBYN
7YYNGBYS
8YYNGBYS
9YYNBBYN
10YYNBBYS
11YYNBBYS
12YYNBBYS
13YYNBBYS
14YYYBBYS
15YYYBBYL

Notes: ① a: drunk, b: tired, c: speedy, d: weather, e: road, f: mountains, and g: accident.
② Y: yes, N: no, G: good, B: bad, S: small, and L: large.