Many people who use search engines on the Internet wondered how it turns out that in response to a request, you can get the necessary information from different sites and, moreover, relevant.
Search technologies
To get a list of sites, you need to enter a search query consisting of words. The word as a separate lexical unit is the basis for the formation of the search results.
The task of the search robot is to crawl as many pages on the Internet as possible and remember their content, breaking the entire text into words in order to create an anchor of the page to a specific topic. Then it is taken into account whether all the words from the query occur in the text of the page and how many times they can be found. On the basis of this data, the issue is formed. This general principle of search engines work is relevant both for the 2000s and for our time.
What affects search results
But still, there are many more factors for forming a list of sites. Today it is believed that the order of sites in the general list is influenced not only by the text, but also by how other visitors behaved on it, that is, the time they spent, where they stopped, etc.
Links placed on pages from other sources, the amount of useful information, the age of the site, and the frequency of updates also have an impact.
Of course, all the principles of work are unknown, so that there is no artificial manipulation of the lists of sites. This allows people to get the information they need, avoiding spam and unwanted pages with viruses.
The search engine today is an incredibly complex system, with a large development team for each service. After all, for example, on Yandex you can watch videos, search for pictures, and read news. All these services work according to their own principles, as well as search by them.
Each search engine has analytics departments whose task is to find out if everything suits users. Algorithms are being improved every day. To maintain the operation of such systems, thousands of servers located around the world are required to provide a consistently high speed of access to resources.
