Natural language processing algorithms for mapping clinical text fragments onto ontology concepts: a systematic review and recommendations for future studies Journal of Biomedical Semantics Full Text
The main stages of text preprocessing include tokenization methods, normalization methods , and removal of stopwords. Often this also includes methods for extracting phrases that commonly co-occur (in NLP terminology — n-grams or collocations) and compiling a dictionary of tokens, but we distinguish them into a separate stage. This article will briefly describe the NLP … اقرأ المزيد