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How Google Search Results Work

Political leanings don't factor into Google's search algorithm. But the authoritativeness of page links that the algorithm spits out and the perception of thousands of human raters do.

Here's a quick look at how Google returns results when you search for things
What Google's bots do
At its core, Google indexes the entire web — some hundreds of billions of pages — using programs called web crawlers. These bots collect descriptions of pages and their incoming links and save this information in Google's data centers. When you search on Google, it scans this index — which is more than 100 million gigabytes large — to quickly provide what it thinks are the most relevant results.
从本质上说，谷歌使用名为“网络爬虫”的程序对整个web——大约数千亿页——进行索引。这些机器人收集页面及其输入链接的描述，并将这些信息保存在谷歌的数据中心。当你在谷歌上搜索时，它会扫描这个超过1亿gb的索引，以快速提供它认为最相关的结果。
Google knows the most popular search terms and, if you're typing, offers to complete the words as you go.
What humans do
Search results are created by an algorithm that has been fine-tuned to incorporate the reviews of some 10,000-plus employees commonly known as search quality raters.
搜索结果是由一种算法创建的，该算法经过微调，以包含大约1万名员工的评论，这些员工通常被称为搜索质量评分者。
These individual follow a set of guidelines to judge the quality of search results, particularly when Google engineers are considering changes to the search algorithm.

Last year, Google engineers tweaked the search algorithm 2,400 times based on the results of more than 270,000 experiments, rater reviews and live user tests.
去年，谷歌的工程师根据超过27万次的实验结果、评论和现场用户测试的结果，对搜索算法进行了2400次的调整。
When it comes to judging the quality of the top news stories that Google displays, three major issues come into play, according to Google: Freshness, relevancy and authoritativeness. Google's crawlers scan pages more frequently if they change regularly.
在评判谷歌展示的顶级新闻报道的质量时，根据谷歌的说法，三个主要的问题开始发挥作用：新鲜度、相关性和权威性。如果谷歌的爬虫程序经常更换的话，它会更频繁地扫描页面。
In the case of news sites, new stories can be added to the index within seconds of publication. Fresher stories will get bumped up in search results.
Results that are more relevant to a search tend to appear higher on the results page.

What is authority
Raters measure the authoritativeness, expertise and the trustworthiness of the sources that appear in search results. Google suggests that raters consider recommendations from professional societies and experts to determine a page's authority.
评分者衡量在搜索结果中出现的来源的权威性、专业知识和可信度。谷歌建议评级机构考虑专业协会和专家的建议，以确定页面的权威性。
Examples of high-quality news sources include ones that have won Pulitzer Prizes, that clearly label advertising as such, and that garner positive reviews from users. Pages that spread hate, cause harm or misinform or deceive users are given low ratings, Google says.
高质量新闻来源的例子包括那些曾获得普利策奖的奖项，它们清楚地将广告贴上这样的标签，并从用户那里获得了积极的评价。谷歌表示，那些传播仇恨、造成伤害、误导或欺骗用户的页面被给予了较低的评级。
The guidelines tell raters to give a low ranking to pages "deliberately created to deceive users." They provide an example of a source that "looks like a news source" but "in fact has articles to manipulate users in order to benefit a person, business, government or other organization politically, monetarily, or otherwise."
该指南告诉评级机构将“故意创建欺骗用户”的页面排名较低。它们提供了一个“看起来像新闻来源”的例子，但“实际上有文章可以操纵用户，以便在政治上、金钱上或其他方面对一个人、企业、政府或其他组织带来好处。”
Results for most people look the same, but Google results are heavily impacted by location, especially if you search for a physical location like a store. Users' search history can also impact results slightly based on frequently conducted searches.
大多数人的结果看起来都一样，但谷歌搜索结果会受到地理位置的严重影响，尤其是当你搜索一个像商店一样的物理位置时。用户的搜索历史也会根据频繁的搜索结果对结果产生轻微的影响。