03_Lexicon Based Approach for Sentiment Analysis

This workflow shows how to perform a lexycon based approach for sentiment analysis of IMDB reviews dataset. The dataset contains movie reviews, previously labelled as positive/negative.
The lexicon based approach assigns a sentiment to each word in a text based on dictionaries of positive and negative words. A sentiment score is then calculated for each document as:
(number of positive words - number of negative words) / total number of words.

External resources

• www.knime.com/knimepress/from-words-to-wisdom