Investigation of BERT Model on Biomedical Relation Extraction Based on Revised Fine-tuning Mechanism

• URL: http://arxiv.org/abs/2011.00398v1
• Date: Sun, 1 Nov 2020 01:47:16 GMT
• Title: Investigation of BERT Model on Biomedical Relation Extraction Based on Revised Fine-tuning Mechanism
• Authors: Peng Su, K. Vijay-Shanker
• Abstract summary: We will investigate the method of utilizing the entire layer in the fine-tuning process of BERT model. In addition, further analysis indicates that the key knowledge about the relations can be learned from the last layer of BERT model.
• Score: 2.8881198461098894
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: With the explosive growth of biomedical literature, designing automatic tools to extract information from the literature has great significance in biomedical research. Recently, transformer-based BERT models adapted to the biomedical domain have produced leading results. However, all the existing BERT models for relation classification only utilize partial knowledge from the last layer. In this paper, we will investigate the method of utilizing the entire layer in the fine-tuning process of BERT model. To the best of our knowledge, we are the first to explore this method. The experimental results illustrate that our method improves the BERT model performance and outperforms the state-of-the-art methods on three benchmark datasets for different relation extraction tasks. In addition, further analysis indicates that the key knowledge about the relations can be learned from the last layer of BERT model.

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