negex_processor: Annotate for Negation

View source: R/negex.R

negex_processorR Documentation

Annotate for Negation

Description

Annotates EHR text for negation, based on Negex, as simple medical negation lexicon. Tokens are labelled by proximity. The original paper went up to 6 tokens before or after negation.

Usage

negex_processor(annotated_text, negex_simp, negex_depth = 6)

Arguments

annotated_text

Dataframe of NLP annotations.

negex_simp

Dataframe of simplified negex.

negex_depth

Maximum distance between word to label and negation term, before or after. Default is 6, as per original paper by Chapman et al.

Value

Dataframe with added negation information.


simon-hans/CEDARS documentation built on Feb. 14, 2024, 3:16 a.m.