Transformer-based Language Models for Factoid Question Answering at BioASQ9b

Urvashi Khanna; Diego Mollá

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arXiv · 2109.07185

Transformer-based Language Models for Factoid Question Answering at BioASQ9b

Urvashi Khanna·Diego Mollá

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Abstract

In this work, we describe our experiments and participating systems in the BioASQ Task 9b Phase B challenge of biomedical question answering. We have focused on finding the ideal answers and investigated multi-task fine-tuning and gradual unfreezing techniques on transformer-based language models. For factoid questions, our ALBERT-based systems ranked first in test batch 1 and fourth in test batch 2. Our DistilBERT systems outperformed the ALBERT variants in test batches 4 and 5 despite having 81% fewer parameters than ALBERT. However, we observed that gradual unfreezing had no significant impact on the model's accuracy compared to standard fine-tuning.

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BibTeX RIS

Urvashi Khanna, Diego Mollá. 2021-09-15. Transformer-based Language Models for Factoid Question Answering at BioASQ9b. https://arxiv.org/abs/2109.07185

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