Twitmo (version 0.1.2)

find_lda: Find best LDA model

Description

Find the optimal hyperparameter k for your LDA model

Usage

find_lda(pooled_dfm, search_space = seq(1, 10, 2), method = "Gibbs", ...)

Arguments

pooled_dfm

object of class dfm (see dfm) containing (pooled) tweets

search_space

Vector with number of topics to compare different models.

method

The method to be used for fitting. Currently method = "VEM" or method = "Gibbs" are supported.

...

Additional arguments passed to FindTopicsNumber.

Value

Plot with different metrics compared.

See Also

FindTopicsNumber

Examples

# NOT RUN {
library(Twitmo)

# load tweets (included in package)
mytweets <- load_tweets(system.file("extdata", "tweets_20191027-141233.json", package = "Twitmo"))

# Pool tweets into longer pseudo-documents
pool <- pool_tweets(data = mytweets)
pooled_dfm <- pool$document_term_matrix

# use the ldatuner to compare different K
find_lda(pooled_dfm, search_space = seq(1, 10, 1),  method = "Gibbs")
# }