Google's Human Intervention
Google classifies intent in three categories, such as "do queries," "go queries," and "action intent," according to The Register. A 160-page Google manual explains to humans rating queries how they should judge an individual Web site based on its relevance, level of spam and quality. The guideline document also explain more about sites attempting to game Google, The Register explains. It turns out that Google outsources ratings to contractors employing home workers.