You may appreciate a little project I did and you can do it to.
I subjected 9000+ of my little writings over the past 28 yrs online, each individually to a classification by a Dewey Decimal automated classifier, weighted the results properly and figured out a few of “what I already believe” in the process.
It’s at: http://act-dl.base-search.net/textclassifier and you can copy/paste anything (even what you just wrote up there) and find out where it would “fit” as loose pages in a library.
I discovered I talk mostly (and with most certainty) about:
Time 115
Epistemology, causation and humankind 120
Causation 120
Philosophy & Theory 401.
[turns out to be Philology]
Quite interesting perspective on one’s hidden beliefs.