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"How to Loop
I use "Loop Attribute Subsets" to implement the classification process, and I would like the classification result of each case in the dataset be stored, so I use the "Write CSV File" opererator to save it. However, I discovered that this operator doesn't implement an "attach" writing like the "Write as Text" operator, which means that each time this operator deletes the content of the file and write new results to it. I would like to know if there is any way to let the "Write CSV File" operator create a new file for writing results each time while keeping the old results.
I know that there is a "Loop Files" operator, but I don't know how to use it to implement this task.