Just KNIME it-2_Challenge-20_v2

https://forum.knime.com/t/solutions-to-just-knime-it-challenge-20-season-2/71599

20th challenge

Tag cloud for all topics and topiced selected
Distribution for all topics, better rating and worse rating (criteria can be controled such as better rating: 4~5 and worse rating: 1~3)
Pie chart for topics (topic 0 is the most common and topic 2 is the least)

v2
Remove too common words