Figure 3
The horizontal axis is labeled “Numbers of Topics,” which ranges from 2 to 70 with an interval of 2. The vertical axis is labeled “Coherence score,” which ranges from 0.36 to 0.43 with an interval of 0.01. The curve in the graph presents a highly fluctuating pattern, with multiple sharp peaks and troughs as the number of topics increases. Initially, the coherence score rises steadily, but after reaching a certain point, the curve begins to exhibit significant fluctuations. It starts from (2, 0.371) and passes through peaks (12, 0.4314), (20.167, 0.429) and (34.072, 0.427), and ends at (71.116, 0.372). Note: All numerical data values are approximated.Coherence scores tuning from 2 to 70 topics. Source: Authors’ own creation