How to read the graph:

1. Each of the blue circle represent a topic and you can hover onto them to see what specific keywords it incorporates.

2. When you hover onto the circle, the right blue bar represents overall frequency across all data, and the blue bar represents frequency in the certain topic.

3. If the a topic circle is large, it means that it has higher percentage of occurence in our data.

4. The distance between topics actually present how topic are related. If they are close or even overlap, the topics and be strongly associated.