We discovered an issue with the velocity loss implementation used for our experiments. The bug was fixed in the commit https://github.com/svito-zar/gesticulator/commit/11642221751593e801790907b0dd5247d88b6468 . The experimental results involving velocity loss were hence not correct and should be disregarded. We are going to conduct a new experiment with the proper velocity loss implementation and will share the results on this project webpage.

We have identified a minor error in our paper concerning the results of PCA. The PCA we used had 12 components (as stated), but these accounted for 92% of the variation on the training set, and not 95% like the paper published at ICMI suggests. The error has been corrected in online postprints of the article.