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Table 1 Feature extraction subsystem

From: KLOSURE: Closing in on open–ended patient questionnaires with text mining

ModuleSoftwareResourcesOutput
linguistic pre-processingStanford Core NLP [38]language modelPOS tags, dependencies
sentiment analysisStanford Core NLP [40]sentiment modelsentiment polarities
named entity recognitionMetaMap [31]UMLS [21]named entities, semantic types
lexicon lookupN/A24 lexiconsmatched items