Generate rules from Decision Tree of Fluency Score
In order to further make sure the decision tree is able to display the pattern of the fluency score, the set of rules have been generated from the decision tree of fluency. The rules are shown in the following table.
|
No. |
Error Pattern |
Probability |
Examples |
| Score 1 | [+AllWrong] | 大家 everyoneda4 jia1 –> da3 jia4 | |
| Score 1 | [+HalfWrong] [+MistakeDup] [+TwoWrong] [+WrongP] | 安全通道an1 quan2 tong1 dao4 –> ang2 quan3 tong1 dao4 | |
| Score 1 | [+HalfWrong] [+MistakeDup] [+4Syl] | ||
| Score 1 | [+HalfWrong] [+MistakeDup] [+MistakeQuad]* This rule actually indicates all the syllables mispronounced | 知道 knowzhi1 dao4 –> zhi2 dao3 | |
| Score 1 | [+HalfWrong] [+MistakeDup] [+MistakeTrip] | 无论如何 anywaywu2 lun4 ru2 he2 –> wu2 lun2 ru1 he4 | |
| Score 2 | [+HalfWrong] [-MistakeDup] | 轻而易举 easyqing1 er2 yi4 ju3 –> qing2 er2 yi1 ju3 | |
| Score 2 | [+HalfWrong] [+MistakeDup] [+TwoWrong] [-WrongP] | 显而易见 obviouslyxian3 er2 yi4 jian4 –> xian3 er3 yi2 jian4 | |
| Score 3 | [+Wrong] | 坐井观天 narrow viewzuo4 jing3 guan1 tian1 –> zuo4 jing2 guan1 tian1 | |
| Score 4 | [-AllWrong] | 再见 goodbyezai4 jian4 –> zai4 jian4 |
The rules generated from the decision tree correspond to the grading scheme specified previously. It is found that the decision tree model is able to reflect the fluency score pattern.