Sentiment analysis is the capability to decipher the opinions contained in a written or spoken text. The main purpose of this technique is to identify the sentiment (or polarity) of a lexical expression, which may have a neutral, positive, or negative connotation.
The problem we want to resolve is the IMDB movie review sentiment classification problem. Each movie review is a variable sequence of words, and the sentiment (positive or negative) of each movie review must be classified.
This problem is very complex, because the sequences can vary in length; they can also be part of a large vocabulary of input symbols.
The solution requires the model to learn long-term dependencies between symbols in the ...