Is there any information anywhere on the search algorithms of Wikimedia search?
I'm interested in how the search algorithm works and would like to suggest some changes such as those under "Proposed solution" in this proposal of the recent Wikimedia Commons technical needs survey so that it shows more relevant, useful, up-to-date, high-quality media further up. Other reasons include that under "Categories and Pages" on WMC, it seems to show very many galleries (which are usually far less useful) and not the category even when the search term matches the cat name 1:1 so probably I'd also like to propose a change to that.
Then I'd also like to propose that if the user searches for something that is also a category name or if it detects that it exactly matches the same topic (e.g. searching for "animal" when category "Animals" exist), a hint link to the category shows up in MediaSearch. Maybe here would be a good place to propose this if not directly in phabricator or another Wishlist item.
Is this the right place to ask or is it here or somewhere else? I thought the search algorithms / search engine tech were open but maybe that is wrong.