I am analyzing a large text file. I notice that each time I log in to view the file or each time I investigate some of the results and return to the main display, the listings for "Main Topical Groups" changes. The order of groups or individual words and entire themes change each time. Why does this happen? Intuitively, I would think these Main Topical Groups would remain the same and be consistent without adjusting the text/data. Thank you.
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