Hi Kilian,
I was looking for some ideas to create Keyword Topic Graphs or keyword graph. To my surprise the output which i am looking for is given in this presentation "Social Media Intelligence Text, Network Mining and Predictive Analytics Combined"(http://www.knime.org/files/german_meetup_koetter_winters_2013.pdf), it will be of great help if you can share this workflow to understand how this piece works.
Thanks in advance.
Regards
S Sathish