Research Article
δ-Cut Decision-Theoretic Rough Set Approach: Model and Attribute Reductions
Table 7
The comparison between decision-monotonicity criterion based reducts and cost based reducts (Dermatology).
| | Approximation qualities | Run times (s) | Algorithm 1 | Algorithm 2 | Algorithm 1 | Algorithm 2 |
| 0.1 | 0.0030 ± 0.0095 | 0.0913 ± 0.1191 | 2.524 ± 0.9840 | 60.14 ± 12.11 | 0.2 | 0.0014 ± 0.0035 | 0.1795 ± 0.0996 | 3.531 ± 2.9403 | 47.88 ± 14.01 | 0.3 | 0.0005 ± 0.0012 | 0.2197 ± 0.0345 | 4.444 ± 4.6011 | 42.23 ± 3.884 | 0.4 | 0.0000 ± 0.0000 | 0.2128 ± 0.0283 | 2.183 ± 0.1003 | 43.43 ± 3.094 | 0.5 | 0.0011 ± 0.0019 | 0.2014 ± 0.0166 | 6.589 ± 7.1960 | 42.18 ± 3.991 | 0.6 | 0.0055 ± 0.0026 | 0.3954 ± 0.1061 | 18.14 ± 0.2819 | 46.62 ± 6.518 | 0.7 | 0.0907 ± 0.0338 | 0.5462 ± 0.0488 | 17.71 ± 0.1935 | 44.46 ± 5.502 | 0.8 | 0.3822 ± 0.0163 | 0.5402 ± 0.0680 | 16.13 ± 0.7679 | 49.32 ± 6.926 | 0.9 | 0.5817 ± 0.0247 | 0.7533 ± 0.0358 | 13.91 ± 0.1070 | 51.12 ± 10.22 | 1.0 | 0.8967 ± 0.0053 | 0.8975 ± 0.0053 | 13.36 ± 0.0263 | 58.57 ± 2.361 |
| Mean values | 0.1963 ± 0.0099 | 0.4037 ± 0.0562 | 9.853 ± 1.719 | 48.80 ± 6.863 |
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