Strategy | Alphabet Size | % Accuracy | #Rules | #expr. atts. |
---|---|---|---|---|
Orig. | 20+1 | 70.7 ± 0.4 | 58.6 ± 2.3 | 9.0 ± 0.2 |
MI | 2 | 67.6 ± 0.3• | 52.9 ± 4.2 | 5.8 ± 1.3 |
 | 3 | 69.4 ± 0.3• | 54.9 ± 1.1 | 5.4 ± 1.2 |
 | 4 | 68.9 ± 0.6• | 54.5 ± 1.3 | 5.9 ± 1.2 |
 | 5 | 67.9 ± 0.9• | 53.1 ± 3.8 | 6.8 ± 1.2 |
RMI | 2 | 67.6 ± 0.3• | 52.9 ± 4.2 | 5.8 ± 1.3 |
 | 3 | 69.7 ± 0.4• | 56.5 ± 1.3 | 5.5 ± 1.2 |
 | 4 | 69.9 ± 0.4• | 57.5 ± 1.2 | 6.3 ± 1.4 |
 | 5 | -- | -- | -- |
DualRMI | 2 | 66.6 ± 0.4• | 33.4 ± 4.8 | 3.7 ± 0.8 |
 | 3 | 69.9 ± 0.4• | 56.7 ± 1.3 | 5.3 ± 1.1 |
 | 4 | 70.1 ± 0.4 | 58.0 ± 1.2 | 6.0 ± 1.4 |
 | 5 | 70.3 ± 0.4 | 58.2 ± 1.1 | 6.5 ± 1.6 |