LynyrdSkynyrd at WNUT-2020 Task 2: Semi-Supervised Learning for Identification of Informative COVID-19 English Tweets

We describe our system for WNUT-2020 shared task on the identification of\ninformative COVID-19 English tweets. Our system is an ensemble of various\nmachine learning methods, leveraging both traditional feature-based classifiers\nas well as recent advances in pre-trained language models that help in\ncapturing the syntactic, semantic, and contextual features from the tweets. We\nfurther employ pseudo-labelling to incorporate the unlabelled Twitter data\nreleased on the pandemic. Our best performing model achieves an F1-score of\n0.9179 on the provided validation set and 0.8805 on the blind test-set.\n