This is something that has annoyed me since the Altavista times. I want to search for "madonna but not the singer", and find pictures of the holy icon. I can do

This is something that has annoyed me since the Altavista times. I want to search for "madonna but not the singer", and find pictures of the holy icon. I can do "madonna -singer", but that fails if the page mentions the word "singer" a single time. Even if it is "This is a page about madonna statues, but not about the famous singer." It would be great if I could add negative keywords to a website, or mark text as "don't index" or "index with a negative weight". But probably, people would game this in ways I can't imagine. There is probably a clever ML solution for this, like having meaning-vectors for distinct ideas, and pushing pages that are close to one meaning away from the other meaning. Classification is easy if you have a keywords like "painting" and "catholic", but if it is "virgin" or "prayer" then it could be either meaning, so there is never a bullet-proof solution.