Data about the frequency of use of search terms on Google can be openly inquired via Google Trends and have been shown to correlate with flu outbreaks and unemployment levels, and provide the information faster than traditional reporting methods and surveys.
As of mid-2016, Google’s search engine has begun to rely on deep neural networks.
The main purpose of Google Search is to hunt for text in publicly accessible documents offered by web servers, as opposed to other data, such as images or data contained in databases.
It was originally developed by Larry Page and Sergey Brin in 1997.
The algorithm computes a recursive score for pages, based on the weighted sum of the Page Ranks of the pages linking to them.
Page Rank is thought to correlate well with human concepts of importance.
The general idea is to affect Google's relevance algorithm by incorporating the keywords being targeted in various places "on page", in particular the title element and the body copy (note: the higher up in the page, presumably the better its keyword prominence and thus the ranking).
Too many occurrences of the keyword, however, cause the page to look suspect to Google's spam checking algorithms.
The move was interpreted in some quarters as a response to Microsoft's recent release of an upgraded version of its own search service, renamed Bing, as well as the launch of Wolfram Alpha, a new search engine based on "computational knowledge".Google Search Console helps to check for websites that use duplicate or copyright content."Universal search" was launched by Google on May 16, 2007 as an idea that merged the results from different kinds of search types into one.This field, called search engine optimization, attempts to discern patterns in search engine listings, and then develop a methodology for improving rankings to draw more searchers to their clients' sites.Search engine optimization encompasses both "on page" factors (like body copy, title elements, H1 heading elements and image alt attribute values) and Off Page Optimization factors (like anchor text and Page Rank).
Prior to Universal search, a standard Google search would consist of links only to websites.