Stanford Lemmatizer

Lemmatizes terms contained in the input documents with the Stanford Core NLP library. For details about the Stanford Core NLP library, please check here .

This node returns the lemma of a term by removing inflections, e.g in case of plurals, pronoun case, and verb endings. The lemma is based heavily on the Part-Of-Speech (POS) tag of a term, so either the Stanford tagger node or the POS tagger node has to be applied before using the Lemmatizer. If more than one POS tag is found for one term, only the first one will be taken into consideration. Moreover, terms with no POS tag will be skipped by default.

Currently only english language is supported by this node.

Input ports

1. Type: Table
   Documents to preprocess
   The input table which contains the documents to preprocess.

Output ports

1. Type: Table
   Preprocessed documents.
   The output table which contains the preprocessed documents.