Clothes reviews analysis with NLP -- Part 1

In my previous article, I've been analyzing text reviews of women clothing online purchases in order to extrapolate the sentiment of customers. The idea was to investigate whether the sentiment was consistent with the purchase recommendation. In this article, I'm going to keep analyzing the text review, but now focusing on the rating column, which indicates a score from 1 (worst) to 5 (best) attributed to the item. Let's refresh which is the dataset we are talking about (you can find it on Kaggle): For this purpose, we are going to build a Neural Network using Keras (with Tensorflow embedded). Before starting, we need to do some further preprocessing of our dataset.