An LSTM predictive model for sentiment analysis
Sentiment analysis is one of the most widely used tasks in NLP. An LSTM network can be used to classify short texts into desired categories, a classification problem. For example, a set of tweets can be categorized as either positive or negative. In this section, we will see such an example.
Network design
The implemented LSTM network will have three layers: an embedding layer, an RNN layer, and a softmax layer. A high-level view of this can be seen in the following diagram. Here, I summarize the functionalities of all of the layers:
Embedding layer: We will see an example in Chapter 8, Advanced TensorFlow Programming that shows that text datasets cannot be fed to Deep Neural Networks (DNNs) directly, so an additional layer called an embedding layer is required. For this layer, we transform each input, which is a tensor of k words, into a tensor of k N-dimensional vectors. This is called word embedding, where N is the embedding size. Every word...
