Fighting the COVID-19 Infodemic with a Holistic BERT Ensemble

Giorgos Tziafas; Konstantinos Kogkalidis; Tommaso Caselli

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arXiv · 2104.05745

Fighting the COVID-19 Infodemic with a Holistic BERT Ensemble

Giorgos Tziafas·Konstantinos Kogkalidis·Tommaso Caselli

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Abstract

This paper describes the TOKOFOU system, an ensemble model for misinformation detection tasks based on six different transformer-based pre-trained encoders, implemented in the context of the COVID-19 Infodemic Shared Task for English. We fine tune each model on each of the task's questions and aggregate their prediction scores using a majority voting approach. TOKOFOU obtains an overall F1 score of 89.7%, ranking first.

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Giorgos Tziafas, Konstantinos Kogkalidis, Tommaso Caselli. 2021-04-12. Fighting the COVID-19 Infodemic with a Holistic BERT Ensemble. https://arxiv.org/abs/2104.05745

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