[Retracted] An English Teaching Pronunciation Detection and Recognition Algorithm Based on Cluster Analysis and Improved SSD

Table 1

Average coverage contrast of default parameter setting results (%).

Default methods	Vowel	Consonant	Average coverage
Empirical equation of SSD model	80.33	36.29	58.31
Global K-means clustering	74.08	85.01	82.95
Classification K-means clustering	84.11	82.42	83.57