Guiding the Training of Distributed Text Representation with Supervised Weighting Scheme for Sentiment Analysis

With the rapid growth of social media, sentiment analysis has received growing attention from both academic and industrial fields. One line of researches for sentiment analysis is to feed bag-of-words (BOW) text representation into classifiers. Usually, raw BOW requires weighting schemes to obtain better performance, where important words are given more weights while unimportant ones are given less weights. Another line of researches focuses on neural models, where distributed text representations are learned from raw texts automatically. In this paper, we take advantages of techniques in both lines of researches. We use words’ weights to guide neural models to focus on important words. Various supervised weighting schemes are explored in this work. We discover that better text features are learned for sentiment analysis when suitable weighting schemes are applied upon neural models.