sufficient distortions based on what one level of distortion eclair bar so let's look at the experiments carried out on this paper so in language they experimented with document classification or sentiment classification or review review sentiment analysis so if you look at the size of the data sets they have like twenty five thousand or four five sixty thousand and six fifty thousand samples and so on and the error rates before birth and after birth are mentioned different lines and you can see how Bert has significantly improved the error