“…In recent years, eye-tracking values, including total fixation time, fixation times, and first fixation time, have been used for part-of-speech tagging (Barrett et al, 2016), syntactic analysis (Agrawal and Rosa, 2020), sentence classification (Barrett et al, 2018;Long et al, 2017), information extraction (Barrett and Hollenstein, 2020;Hollenstein and Zhang, 2019;Zhang and Zhang, 2021) , and text understanding (Malmaud et al, 2020;Zheng et al, 2019), which has been proved to improve the performance of deep learning models. Besides, eye-tracking values are also widely used in behavioral sciences to analyze users' behaviors, such as searching and querying information (Gwizdka et al, 2019;Sachse, 2019;Wu and Huang, 2018).…”