Abstract
In this paper, we explore the potential benefits of leveraging eye-tracking information for dependency parsing on the English part of the Dundee corpus. To achieve this, we cast dependency parsing as a sequence labelling task and then augment the neural model for sequence labelling with eye-tracking features.
We then experiment with a variety of parser setups ranging from lexicalized parsing to a delexicalized parser. Our experiments show that for a lexicalized parser, although the improvements are positive they are not significant whereas our delexicalized parser significantly outperforms the baseline we established.
We also analyze the contribution of various eye-tracking features towards the different parser setups and find that eye-tracking features contain information which is complementary in nature, thus implying that augmenting the parser with various gaze features grouped together provides better performance than any individual gaze feature.