topicdoc (version 0.1.1)

topic_size: Calculate the size of each topic in a topic model

Description

Calculate the size of each topic in a topic model based on the number of fractional tokens found in each topic.

Usage

topic_size(topic_model)

Value

A vector of topic sizes with length equal to the number of topics in the fitted model

Arguments

topic_model

a fitted topic model object from one of the following: tm-class

References

Jordan Boyd-Graber, David Mimno, and David Newman, 2014. Care and Feeding of Topic Models: Problems, Diagnostics, and Improvements. CRC Handbooks ofModern Statistical Methods. CRC Press, Boca Raton, Florida.

Examples

# Using the example from the LDA function
library(topicmodels)
data("AssociatedPress", package = "topicmodels")
lda <- LDA(AssociatedPress[1:20,], control = list(alpha = 0.1), k = 2)
topic_size(lda)