I just did a google search for “league of -legends” (sans quotes) and it didn’t return links to the game.
This is absolutely true. I wonder why I always hit the edge cases.
Ask HN: Why do search engines ignore the exclusion operator now “-”?
11–15 of 15 posts
Re: Ask HN: Why do search engines ignore the exclusion operator now “-”?
#12The cynical take: They'll do what's profitable over what's accurate.
I noticed it's like this on Amazon the other day. It meant I couldn't narrow down results to find what I wanted so I could give Amazon money
Re: Ask HN: Why do search engines ignore the exclusion operator now “-”?
#13Because negation is incredibly expensive in any information retrieval system. You want all recipes with blue cheese in them? That's easy. You want all recipes with no blue cheese in them? That's a massive number of recipes.
Re: Ask HN: Why do search engines ignore the exclusion operator now “-”?
#14Because negation is incredibly expensive in any information retrieval system. You want all recipes with blue cheese in them? That's easy. You want all recipes with no blue cheese in them? That's a massive number of recipes.
Still less than all the recipes, which would also be a valid search so I don't think this point stands.
Re: Ask HN: Why do search engines ignore the exclusion operator now “-”?
#15Because negation is incredibly expensive in any information retrieval system. You want all recipes with blue cheese in them? That's easy. You want all recipes with no blue cheese in them? That's a massive number of recipes.
Still less than all the recipes , which would also be a valid search so I don't think this point stands.
What query do you use to get Google to list all documents in its index?