On Fri, Mar 4, 2022 at 11:43:57AM -0500, Tom Lane wrote: > "Bayer, Samuel" <sam@xxxxxxxxx> writes: > > One concrete question, I suppose, is: the classic TF/IDF search strategy relies on inverse document frequency, which looks across the corpus. I can't tell whether that corpus-wide frequency information is taken into account in either ranking function. > > The documentation is pretty clear that they don't, they just consider each > document in isolation. Building a structure that would allow more-global > info to be taken into account is an interesting project that nobody's > tackled. Oh, you mean like, "pizza" is used only in this document vs it being used in every document. Should we add some documentation about this or is it already clear? -- Bruce Momjian <bruce@xxxxxxxxxx> https://momjian.us EDB https://enterprisedb.com If only the physical world exists, free will is an illusion.
