Unveiling the semantic structure of text documents using paragraph-aware Topic Models
Table 4: Higher coherence topics, comparison between specific, general, and LDA topics.
['Topic type', '[ITALIC] CP coherence', 'Top 10 words']
Fig. Fig. When adding one or two background topics, we can see that coherence is worse. This may be related to how restrictive is to represent general paragraphs with one or two topics. However, the more general topics we add, the higher Coherence is for specific topic, higher than for LDA. This proves that adding general topics in which more general words could fit in, helps in cleaning specific topics, those in which we want to focus.