Fig 1.
Generative process of LDA (adapted from [61]).
Fig 2.
Ten most frequent terms.
Fig 3.
Collocation graph of “student”.
Fig 4.
Metrics for determining the optimal number of topics.
Fig 5.
Coherence score across different numbers of topics.
Fig 6.
Top terms for each topic.
Fig 7.
Topic network.
Fig 8.
Emotion distribution.
Fig 9.
Sentiment distribution.
Fig 10.
Emotion distribution across topics.