Machine Learning Approach for Sentiment Analysis
The Lexical methods of Sentiment Analysis, even though easy to understand and implement, are not proven to be very accurate. Thus, we discuss the Machine Learning approach for Sentiment Analysis, focusing on using Convolutional Neural Networks for Sentiment Analysis.
Understanding TF IDF (term frequency - inverse document frequency)
tf-idf stands for Term Frequency - Inverse Document Frequency. It is a 2 dimensional data matrix where each term denotes the relative frequency of a particular word in a particular document as compared to other documents. This is a widely used metric in Text Mining and Information retrieval