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In Artificial intelligence in medicine ; h5-index 34.0

We introduce a deep learning architecture, hierarchical self-attention networks (HiSANs), designed for classifying pathology reports and show how its unique architecture leads to a new state-of-the-art in accuracy, faster training, and clear interpretability. We evaluate performance on a corpus of 374,899 pathology reports obtained from the National Cancer Institute's (NCI) Surveillance, Epidemiology, and End Results (SEER) program. Each pathology report is associated with five clinical classification tasks - site, laterality, behavior, histology, and grade. We compare the performance of the HiSAN against other machine learning and deep learning approaches commonly used on medical text data - Naive Bayes, logistic regression, convolutional neural networks, and hierarchical attention networks (the previous state-of-the-art). We show that HiSANs are superior to other machine learning and deep learning text classifiers in both accuracy and macro F-score across all five classification tasks. Compared to the previous state-of-the-art, hierarchical attention networks, HiSANs not only are an order of magnitude faster to train, but also achieve about 1% better relative accuracy and 5% better relative macro F-score.

Gao Shang, Qiu John X, Alawad Mohammed, Hinkle Jacob D, Schaefferkoetter Noah, Yoon Hong-Jun, Christian Blair, Fearn Paul A, Penberthy Lynne, Wu Xiao-Cheng, Coyle Linda, Tourassi Georgia, Ramanathan Arvind

2019-Nov

Cancer pathology reports, Clinical reports, Deep learning, Natural language processing, Text classification