BioReX: Biomarker Information Extraction Inspired by Aspect-Based Sentiment Analysis

Biomarkers are critical in cancer diagnosis, prognosis, and treatment planning. However, this information is often buried in unstructured text form. In this paper, we make an analogy between Biomarker Information Extraction and Aspect-Based Sentiment Analysis. We propose a system, Biomarker and Result Extraction Model (BioReX). BioReX employs BERT post-training methods to augment the BioBERT model with domain-specific and task-specific knowledge for biomarker extraction. It uses syntactic-based and semantic-based attention to associate results to corresponding biomarkers. Evaluation demonstrates the effectiveness of the proposed approach.