Nontakan Nuntachit. Classification of COVID-19 medical articles using deep learning model. Master's Degree(Data Science). Chiang Mai University. Library. : Chiang Mai University, 2022.
Classification of COVID-19 medical articles using deep learning model
Abstract:
The Global pandemic of Corona Virus Disease 19 (COVID-19) has made an impact on our daily life. After 2019, the literatures that focus on COVID-19 have rising exponentially. It is almost impossible for human to read all literatures and classify them. In this article, we propose the method to make an unsupervised model called zero-shot classification model from pre-trained BERT (Bidirectional Transfomers) model. We use CORD-19 dataset in conjunction with LitCovid database for construct new vocabulary and prepare test dataset. For Natural Language Inference (NLI) downstream task, we use three corpus Standford Natural Language Inference (SNLI), Multi-Genre Natural Language Inference (MultiNLI) and MedNLI. We can significantly reduce the training time to build a task specific machine learning model by 98.2639%. The final model can run faster and use lower resources than the comparators. It has 27.84% accuracy which is lower than the best achieve accuracy by 6.73%, but it is comparable. Finally, we can identify that tokenizer and vocabulary that is more specific to COVID-19 do not outperform the generalization one, also BART architecture affects the classification result too.