11 Our CC and MLE results are on par with the best results from the state-of-the-art systems competing in the 2010 Interspeech Challenge, where the task was to detect level of interest.
the winner obtained a CC of 0.428 (higher numbers are better) and an MLE of 0.146 (lower numbers are better) (Jeon et al., 2010), while a subsequent study yielded a CC of 0.480 and an MLE of 0.131 on the same corpus (Wang and Hirschberg, 2011).