Open the topic viewer after the node runs. From there you can edit weights of terms causing some to drop out (set them to 0)  and others to increase influence. You are in control.  You can also add a new name to your topic. Once you have done this and saved your changes, the topic becomes a user-defined topic and will be retained as you have edited. ... View more

Once you have the SAS code mode running successfully, examine the data exported from that node. It will have the document*topics matrix along with any new topics you created in the SAS code node.    you can hook up additional nodes to the SAS code node to plot the topics, save the exported data, build predictive models, and so on. But no more TT nodes should be needed.    Hope this helps   Ray ... View more

Great. Glad it worked!   I'm not sure about the negation operator. I just tried now for the first time and it didn't work out.   But you could use the topic indicator variables from the TT and the Transformation node (or a SAS Code node) to derive new topics with expressions like:    if textTopic_1 and not textTopic_2 then newTopic = 1;    Then select documents using the new topic indicator.    Ray               ... View more