Data-Driven Lexical Normalization for Medical Social Media
Abstract
In the medical domain, user-generated social media text is increasingly used as a valuable
complementary knowledge source to scientific medical literature. The extraction of this knowledge is
complicated by colloquial language use and misspellings. However, lexical normalization of such
data has not been addressed effectively. This paper presents a data-driven lexical normalization pipeline with a novel spelling correction module for medical social media. Our method significantly outperforms state-of-the-art spelling correction methods and can detect mistakes with an F1 of 0.63 despite extreme imbalance in the data. We also present the first corpus for spelling mistake detection and correction in a medical patient forum.

