Part 4: Topic Modeling with Latent Dirichlet Allocation

Topic modeling can produce rich information for each topic. In this part, you will learn about a milestone topic modeling technique – the Latent Dirichlet Allocation. There are several fundamental concepts applied in LDA, thus this part introduces the key concepts in different chapters.

First, you will learn about the discrete distribution family from the simple to more generalized forms, including the Dirichlet distribution. With that, this part presents the intuition and architecture of an LDA. With the theoretical understanding, you will build LDA with Gensim.

The next question is how to visualize and communicate the results. Here, you will appreciate the design of the infographic for LDA. Further, you will understand why LDA may not produce reliable results and the advance to Ensemble LDA for model stability.

This part contains the following chapters:

• Chapter 9, Understanding Discrete Distributions...