Generate rules from Decision Tree of Phonetic Error
After generating the decision tree, it is essential to generate rules from the tree built in order to have a better understanding of the entire model. The following table shows the set of rules generated for the top 10 syllables which are easily mispronounced.
|
No. |
Error Pattern |
Probability |
Examples |
| zh
àch |
[-aspiration] à [+aspiration] / __ [-FinalVowel]
+retroflex +retroflex -Rounding +affricate +affricate |
0.643 | zhong1 –> chong1
中 –> 冲 middle –> rush |
| sh
àch |
[ ] à [+aspiration] / __ [+rounding] [-voiced]
+retroflex +retroflex +ToneError +fricative +affricate -Glide
|
0.643 | shu4 –> chu4
树 –> 处 tree –> office |
| q
àj |
[+aspiration] à [-aspiration] / __ [+short ]
+palatal +palatal -FinalNasalVelar +affricate +affricate
|
0.774 | qi1 –> ji1
妻 –> 鸡 wife –> chicken |
| t
àd |
[+alveolar ] à [+alveolar ] / ___ [+AGroup]
+aspiration -aspiration
|
0.944 | * |
| z
àzh |
[-aspiration] à [-aspiration] / ___[-Diphthong ]
+alveolar +retroflex +FinalNasalVelar +affricate +affricate
|
0.944 | zao1 –> zhao1
糟 –> 招 spoil –> recruit |
| j
àq |
[-aspiration] à [+aspiration] / __ [+FinalMod]
+palatal +palatal +affricate +affricate
|
0.684 | * |
| ch
à q |
[+aspiration] à [+aspiration] / __ [+short][InitGlide]
+retroflex +palatal +affricate +affricate |
0.75 | chi1 –> qi1
吃 –> 七 eat –> seven |
| x
à sh |
[+palatal ] à [+retroflex] / __ [+short ] [+InitSib]
+fricative +fricative +rounding +shortline
|
1 | xi4 –> shi4
系 –> 是 department –> yes |
| c
àz |
[+aspiration] à [-aspiration] / ___ [+DiphFall2]
+alveolar +alveolar +affricate +affricate
|
0.85 | * |
| d
àt |
[-aspiration] à [+aspiration] / [+FinalGlide][+AGroup]
+alveolar +alveolar +ToneError
|
0.667 | * |
* The example correspond to this syllable is still under research.