Contextual Feature Extraction Clause Samples

Contextual Feature Extraction. Many researches emphasize the value of special contextual features within text. Detecting negation expression and the affected scope [55-60] is very important to clinical report since it may overturn the meaning of a statement. Temporal feature provides critical information for medical reasoning and decision [61-67]. It represents medical encounters with a timeline. Some other researches value the importance of medical events, which are modeled based on medicine procedure, time and negative information [65, 68-71].