Topic Modelling of Germas Related Content on Instagram Using Latent Dirichlet Allocation (LDA)

Content generated by Instagram users related to the Healthy Living Community Movement (GERMAS) has provided new media information that is important for the community and, in particular, the health department. At present, Indonesia is facing a serious challenge in the form of a double burden of disease. Changes in people's lifestyles are suspected to be one of the causes of a shift in disease patterns (epidemiological transition) in the last 30 years. Discussions on what topics occur in the community related to health, as well as community complaints, have not been identified. The Data Mining technique makes it possible to analyze and extract any topics that are contained from the data captions from Instagram. This study uses Latent Dirichlet Allocation (LDA) as a method for modeling topics. The results of evaluating the number of topics using topic coherence yielded the eight most appropriate topic segments. Based on the results of content analysis on each topic segment, it was found that the most dominant topic related to GERMAS was a healthy lifestyle diet.