How Google works??

Welcome back guys to KR Learning and today in this post I am going to to describe the most important question that almost 90% of people asked that is "HOW GOOGLE SEARCH WORKS ". Guys read the full article and I am predesure that your all the doubts related to Google search will clear. 

Every day, billions of people come into Google Search with lots of questions about all kinds of things. Sometimes people asked questions about Google Search itself, like how this whole things actually works. And while this is a subject entire books have been written about, there's a good chance  we're in the market for something a little more concise. So let's say it's getting close to dinner, and we want a recipe for lasagna. We've probably seen this before. But let's go a little deeper. Since the beginning, back when the homepage looked like this. 

Google has been continuously mapping the web, hundreds of billions of pages, to create something called an index. Think of it as the giant library that Google look through whenever we do a search for lasagna, or anything else. Now the word lasagna shows up a lot on the web pages about the history of lasagna ,articles by scientists whose last name happened to be Lasagna, stuff other people might be looking for. But if we're hungry, randomly clicking through millions of links is no fun. This is where Google's ranking algorithms come into play. First, they try to understand what we're looking for so they can be helpful, even if we don't know exactly the right words to use, or if our spelling is a little off. Then they sift through millions of possible matches in the index, and automatically assemble a page that tries to put the most relevant information up top, for you to choose from.

Okay, Now Google have some results. But how did the algorithms actually decide what made it onto the first page? There are hundreds of factors that go into ranking search results. So let's talk about a few of them. We may already know that pages containing the words we search for are more likely to end up at the top. No surprise there But the location of those words, like in the page's title or in an image's caption, those are factors too.

 

There's a lot more to ranking than just words. Back when Google got started, his team looked at how pages linked to each other, to better understand what pages were about, and how important and trustworthy they seemed. Today, linking is still an important factor. Another factor is location, where a search happens. Because if we happen to be in Delhi ,India, we might be looking for information about our Durga puja festival. But if we're in Dubai, South Africa, we probably aren't. When a webpage was uploaded is an important factor too. Pages published more recently often  have more accurate information, especially in the case of a rapidly developing news story. 

Of course not every site on the web is trying to be helpful. Just like with robocalls on your phone or spam in your email, there are a lot of sites that only exists a scam.And every day scammers upload millions more of them. So just because instant VirusDownload.net lists the words "lasagna recipe" 400 times,that doesn't mean it's going to help you make dinner. Teams of Google spend a lot of time trying to stay one step ahead of tricks like these, making sure their algorithms can recognize scam sites and flag them before they make it to Google search results page. So, let's review.

 Billions of times a day,whenever someone searches for lasagna, or resume writing tips or how to swaddle a baby, or anything else, Google software locates all the potentially relevant results on the web, removes all the spam and ranks them based on hundreds of factors like keywords, links, location, and freshness. 

This last part is about how Google make changes to search, and it's important. Since 1998 when Google went online. People seem to have found Google's results pretty helpful But the web is always changing, and people are always searching for new things. In fact, one in every seven searches is something that's never been typed into the search box before by anyone ever. So, teams of Google are always working on updates to Search thousands every year.Which brings up a big question. How do Teams of Google decide whether a change is making Search more helpful? Well, one of the ways they evaluate potential updates to Search is by asking people like us. Every day 1000s of search quality raters look at samples of search results side by side, then give feedback about the relevance and reliability of the information. To make sure those evaluations are consistent,the raters follow a list of Search quality evaluator guidelines. Think of them as Google's teams publicly available guide to what makes a good result.

 Good. Oh, and one last thing to remember, teams of Google use responses from Raters to evaluate changes. But they don't directly impact how search results are ranked. So there we have it. Every time we click Search ,Google algorithms are analyzing the meaning of the words in your search matching them to the content on the web, understanding what content is most likely to be helpful and reliable, and then automatically putting it all together in a neatly organized page designed to get us the info we need. The most intresting part is  all this things happens just in a second.!!WOW !!

(This all the information is collected by the official Youtube  channel of google.)

hope this post helps you !!

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