GoogleGuy answers a question about word stemming in languages other than english.
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"that is a good question: Will stemming be introduced in other languages?"
That's such a good question that I don't know the answer--but I'll check. I know that we always want to check out if features can be done in different languages; sometimes that harder for some languages, e.g. CJK (Chinese Japanese Korean). But there have also been some non-English language-specific projects (e.g. German) to improve the ability to parse just for that language. As far as why blue widget would trigger and red widget wouldn't--we want to be confident that we're improving a given search before we add in a new feature. wellzy, you're right in that people shouldn't have been stuffing keywords all along, but rather using natural text that regular users would want to read. kaled, we do sometimes offer tips on the search results page, and adding '+' is like the checkbox that turns it off. Meman, welcome to WebMasterWorld! I'm sorry to hear you think Google is behaving like perfect tramps--is that because we introduced new stemming algorithms, or are you refering to algorithmic changes? For what it's worth, there hadn't been any major algorithmic changes for 5-6 months, so I understand the surprise when we introduced new algorithms. Back in the days of the monthly dance, people got used to seeing large changes once a month. Looking toward the future, I expect continuing change as we introduce new signals and algorithms into our ranking. Since we're no longer doing monthly dances, it's more likely that algorithms and changes will just roll out after they're ready and have been tested.