Table 2 Effect of varying the frequency threshold on the number of rules extracted
Matrix | Frequency threshold (%) | Number of rules |
|---|---|---|
Max minus 25% | 10 | 0 |
Max minus 25% | 6 | 10 |
Max minus 25% | 5 | 68 (Figure 5) |
Max minus 25% | 2 | 4,084 |
Mid-range-based | 10 | 1,746 |
Mid-range-based | 6 | 36,550 |
Mid-range-based | 5 | 111,143 |
Mid-range-based | 2 | Intractable |
5% of HV | 10 | 0 |
5% of HV | 6 | 21 |
5% of HV | 5 | 301 |
5% of HV | 2 | 32,329 |