How Search Works

HOW SEARCH WORKS From algorithms to answers. SCROLL TO SEE THE STORY PART 1 OF 3 CRAWLING AND INDEXING SEARCH STARTS WITH THE WEB. IT'S MADE UP OF OVER 60 TRILLION INDIVIDUAL PAGES AND IT'S CONSTANTLY GROWING. the web by CRAWLING. Google navigates That means we follow links from page to page. Site owners choose whether their sites are crawled. We sort the pages by their content and other factors. STRING THEORY PHYSICS P-BRANE It's over 100 million gigabytes. And we keep track of it all in THE INDEX. PART 2 OF 3 ALGORITHMS WE WRITE PROGRAMS & FORMULAS TO DELIVER THE BEST RESULTS POSSIBLE. As you search string theory ALGORITHMS get to work looking for clues to better understand what you mean. Search Methods Autocomplete Google Instant Spelling Query Understanding Synonyms Based on these clues, we pull relevant documents from THE INDEX. PHYSICS STRING THEORY STRING CATS P-BRANE THEORY RANK the results We then 33 Site & Page Freshness Quality 200 FACTORS. using over SafeSearch User Context The Search Lab EXPLORE THE Our algorithms are constantly changing. SEARCH LAB These changes begin as ideas in the minds of our engineers. They take these ideas and run experiments, analyze the results, tweak them, and run them again and again. Universal Translation Search All this happens in RESULTS 1/8th of a second. can take a variety of forms: Google Google 3 Google AUTI PART 3 OF 3 FIGHTING SPAM WE FIGHT SPAM 24 7 TO KEEP YOUR RESULTS RELEVANT. CAUTION SPAM The majority of spam removal is See types of spam automatic. We examine other questionable documents by hand. If we find spam, we take manual ACTION. CAUTION SPAM A CAUTION SPAM See what we've removed lately See action taken over time A CAUTION SPAM A CAUTION SPAM A CAUTION SPAM When we take action, we attempt to NOTIFY the website owners. See the growth in spam notifications A CAUTION SPAM OTION SPAM A CAUTION FIX Site owners can their sites and let us know. A CAUTION SPAM See how often this happens AND THAT'S HOW SEARCH WORKS. Behind your simple page of results is a complex system, carefully crafted and tested, to support more than one-hundred billion searches each month. III||| ||| || | | | || | || ||| | ||| | || A CAUTION SPAM CAUTION SPAM