plot metrics to find the best number of topics

Source: R/topicModel_utils.R

plot metrics to find the best number of topics

plotindex(ldas)

Arguments

ldas

list of 4 metrics(perplexity, loglikelihood, alpha, entropy, cosine similarity), result of lda.rep().

Value

ggplot object

Examples

if (FALSE) {
ldas <- lda.rep(dtm=dtm, max.k=10, method='VEM', SEED=123)
plotindex(ldas)
}