WLASL-LEX: a Dataset for Recognising Phonological Properties in American Sign Language

• URL: http://arxiv.org/abs/2203.06096v1
• Date: Fri, 11 Mar 2022 17:21:24 GMT
• Title: WLASL-LEX: a Dataset for Recognising Phonological Properties in American Sign Language
• Authors: Federico Tavella and Viktor Schlegel and Marta Romeo and Aphrodite Galata and Angelo Cangelosi
• Abstract summary: We build a large-scale dataset of American Sign Language signs annotated with six different phonological properties. We investigate whether data-driven end-to-end and feature-based approaches can be optimised to automatically recognise these properties.
• Score: 2.814213966364155
• License: http://creativecommons.org/licenses/by/4.0/
• Abstract: Signed Language Processing (SLP) concerns the automated processing of signed languages, the main means of communication of Deaf and hearing impaired individuals. SLP features many different tasks, ranging from sign recognition to translation and production of signed speech, but has been overlooked by the NLP community thus far. In this paper, we bring to attention the task of modelling the phonology of sign languages. We leverage existing resources to construct a large-scale dataset of American Sign Language signs annotated with six different phonological properties. We then conduct an extensive empirical study to investigate whether data-driven end-to-end and feature-based approaches can be optimised to automatically recognise these properties. We find that, despite the inherent challenges of the task, graph-based neural networks that operate over skeleton features extracted from raw videos are able to succeed at the task to a varying degree. Most importantly, we show that this performance pertains even on signs unobserved during training.

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