When it comes to searching for information on the Internet, the term "relevance" is often mentioned. We hear the following: "This search engine has an irrelevant search" or, conversely: "The search engine has excellent relevance." What is behind this term - relevance? In our information age, every Internet user should know this.
Relevance is considered to be how much the documents found by the search engine match the query entered by the user. In short, this is a certain degree of conformity. What does it mean? For example, let's say you need to greet guests and cook something delicious. Accordingly, in the search engine, you type the phrase you need: "recipes." The search engine monitors its index base and finds several million pages in it.
On all these pages, the phrase "recipes" occurs tens of millions of times. Moreover, these are sites with culinary recipes you need, and, for example, pages from virtual diaries. So, some young lady, the owner of the diary, could simply write: “Today I realized that I can only cook scrambled eggs. We ought to look for some interesting recipes. " And such records, absolutely unnecessary for you, will also be found by the search engine for a given query.
Which of the following links would you like to see first? A link to the recipe site, of course! This is what is called relevance, or the degree to which the search results match the query.
How does the search engine determine this very relevance, how does it find exactly those pages that the user would like to see in the first place? The basic, basic principle of search for all systems is the same: the system checks how often a given phrase will be found on the found pages, it also checks the number of links to these pages, estimates how long ago the site was created and the entry with the desired phrase. In addition, the font of the given phrase and the distance between words matter.