Google：搜索质量评分指南（英文版）

Search Quality Rating GuidelinesGoogle relies on raters, working in countries and languages around the world, to help us measure the quality of our search results, ranking, and search experience. These raters perform a variety of different kinds of “rating tasks” designed to give us information about the quality of different kinds of results in response to different kinds of queries. The data they generate is rolled up statistically to give us within the Google search team a view of the quality