Which of googles algorithms measure user metrics?

Selected answers from the Dumb SEO Questions Facebook & G+ community.

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  David Harry: Ok, the problem with that is we don`t really know if they use implicit and explicit user feedback for ranking. It might be more about search quality and other measurements. So, don`tgo nuts with this list. But here`s some areas they might look at; Explicit user feedback are when a user takes and action. Adds to favs, shares etc... Implicit, are things such as; Query history (search history) SERP interaction (clicks, query revisions, selections and bounce rates) User document behaviour (time on page/site, scrolling behaviour); Surfing habits (frequency and time of day) Interactions with advertising Demographic and geographic Data from different application (application focus — IM, email, reader); Closing a window. You get the idea... anyway, we don`t reall know how they`d use stuff like that...
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  David Harry: and NO... lol. RankBrain and HummingBird have NOTHING to do with that kinda stuff
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  Roger Montti: It`s not really about updating the SERPs as it is more for updating the algorithm to satisfy users. But a lot of that was research from 2005ish, for desktop. Click research doesn`t work in mobile. So there are now different methodologies for not only measuring mobile satisfaction rates but actually predicting it, too.
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  Jim Munro: I think you might be barking down the wrong rabbit-hole, Chase. David and Roger have given you good honest answers but what use can this information be put to? Of course, elsewhere you`ll find all kinds of spurious claims. They might sparkle more than the boring stuff you`ll find on this community, but that`s a life-choice you`ll have to make for yourself.
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  Jason Duke: I`m pretty sure it might be one of these... http://bit.ly/2D6jxrl