Native Language Identification on Text and Speech
Table 3: Confusion matrix on the test set.
['[EMPTY]', 'CHI', 'JPN', 'KOR', 'HIN', 'TEL', 'FRE', 'ITA', 'SPA', 'GER', 'ARA', 'TUR']
We observed that the best performance was obtained for Japanese and the worst performance was obtained for Arabic. Not surprisingly, most confusion occurred between Hindi and Telugu. Our initial analysis indicates that this confusion occurred because of geographic proximity and not by intrinsic linguistic properties shared by these two languages, as Hindi and Telugu do not belong to the same language family - Hindi is a Hindustani language and Telugu is a Dravidian language.