I am trying to use stratification to simplify the process, but need some help on how to combine the output. Instead of creating topic nodes for each level of a stratification variable (saying gender), I am wrapping text parser, text filter and text topic nodes within start/end group. Normally, the output of a topic node will have the topic assignment for each document. But now because the process will go through each level of the stratification variable, I do not see how we can get the output for all the input documents.
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