ClovaCall: Korean Goal-Oriented Dialog Speech Corpus for Automatic Speech Recognition of Contact Centers
Table 2: Usage patterns of top frequent words and characters of ClovaCall in AIHub dataset. Ratio and size denote the ratio and the number of the top ranked words and characters. No means the number of words and characters not used in AIHub. Rank in AIHub is the average rank in AIHub. The unique word and character sizes are different from Table 1 because we discarded numerical characters. The sizes of unique words and characters of AIHub are 390,599 and 2,268.
['ClovaCall', 'Ratio', 'Size', 'No', 'Rank in AIHub']
Fig. As shown in Fig. In terms of characters, ClovaCall shows the similar pattern to AIHub considering the number of not used characters and their average rank in AIHub. However, the word usage of ClovaCall is significantly different from AIHub. Frequently used words of ClovaCall do not appear in AIHub or are rarely used with very low rank. These difference between two datasets enhances the necessity of goal-oriented dialog corpora. We show the difference causes poor accuracy of ASR models trained from AIHub data on ClovaCall dataset.