spark-lda-coherence

Example of Topic Coherence Calculation for LDA (Latent Dirichlet allocation) model in Apache Spark.

The example uses Pointwise mutual information (PMI) for topic coherence calculation. In details, it uses Intrinsic UMass measure. Helpful articles:

• Method explanation
• Clarification
• Original Article

How to use

There is example of usage in CoherenceTest file.

Also, you can compile the project and add it dependency to your project:

Example, publish to local Maven: sbt publishM2

And next:

libraryDependencies += "io.github.gnupinguin" %% "ldacoherence_2.12" % "1.0"