When looking at the dev set scores, the most discriminative gaze feature is mean fix dur that increases LAS by +0.17 and first fix dur by +0.14.
evaluation on the test set shows that the most informative gaze features are from the context group learned as multiple auxiliary tasks (context feats aux) and they improve the LAS score by +0.18, followed by fix prob and w−1 fix prob with +0.13, total fix dur with +0.12 and late feats aux with +0.10.