How can I use document metadata in function expressions?

If you set the vector creation parameter for your "process documents" operator to term frequency, isn't that calculating what you are looking for?

Thanks for the reply. Vector creation parameter options don't make any changes on the result regardless of any option I choose. I always get the same results: total occurrences, and document occurrences.

It sounds like that is the output from the wordlist.  If you also connect the output port for the exampleset and examine that, you should see each token as its own attribute and the value that it has will be based on the term frequency (percentage of document tokens that particular token represents). 

You can also use the operator "Wordlist to Data" and then the resulting wordlist will be its own exampleset, at which point you can then use "Generate Attributes" and create whatever transformations/expressions you want with each token as its own example.

That's correct and now I do see the frequency for each term in a single a row as you described but now I'm missing the total occurrence information. I just cannot seem to find to merge both data into one result.