Table 1. The observational model for categorical method.
| BTij | ||||
| 0 | 0.5 | 1 | ||
| BOij | 0 | 1−e1 | e2/2 | 0 |
| 0.5 | e1 | 1−e2 | e1 | |
| 1 | 0 | e2/2 | 1−e1 | |
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