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CLRGaze: Contrastive Learning of Representations for Eye Movement Signals

25 October 2020
Louise Gillian C. Bautista
P. Naval
ArXiv (abs)PDFHTML
Abstract

Eye movements are rich but ambiguous biosignals that usually require a meticulous selection of features. We instead propose to learn feature representations of eye movements in a self-supervised manner. We adopt a contrastive learning approach and a set of data transformations that enable a deep neural network to discern salient and granular gaze patterns. We evaluate on six eye-tracking data sets and assess the learned features on biometric tasks. We achieve accuracies as high as 97.3%. Our work provides insights into a general representation learning method not only for eye movements but also possibly for similar biosignals.

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