Google Panda Algorithm

Google Panda is a Google’s search results ranking algorithm that was first released in February 2011. It helps lower the rank of low-quality sites or thin sites, in particular content farms,and return higher-quality sites near the top of the search results.According to CNET reported a surge in the rankings of news websites and social networking sites, and a drop in rankings for sites containing large amounts of advertising.This change reportedly affected the rankings of almost 12 percent of all search results.

Penguin Algorithm

Google Penguin is a Google algorithm update that was announced on April 24, 2012. The update was aimed at decreasing search engine rankings of websites that violate Google’s Webmaster Guidelines by using now declared black-hat SEO techniques involved in increasing artificially the ranking of a webpage by manipulating the number of links pointing to the page. Such tactics are commonly described as link schemes. 

Hummingbird Algorithm

Hummingbird is the significant algorithm change in Google Search in 2013. Its name was derived from the speed and accuracy of the hummingbird. The change was announced on September 26, 2013, having already been in use for a month. Hummingbird places greater emphasis on natural language queries, considering context and meaning over individual keywords. It also looks deeper at content on individual pages of a website, with improved ability to lead users directly to the most appropriate page rather than just a website’s homepage.

Fred Algorithm

Google Fred had a big impact on the Google rankings of websites worldwide. Initially most SEO news websites reported that Google Fred looked at the quality of websites, however, Illyes subsequently stated that Google Fred was not just one update but several different updates.The algorithm update that targets black-hat tactics tied to aggressive monetization. This includes an overload on ads, low-value content, and little added user benefits.

Pigeon Algorithm

The algorithm changes will  affect the search results shown in Google Maps along  regular Google search results. and locations. This update provides the results based on the user location and the listing available in the local directory.This is quite useful for the user and local businesses. On the day of release, it received mixed responses from webmasters. Some complained about the ranking being decreased whereas others reported improvement in the search rankings.

RankBrain Algorithm

RankBrain is a machine learning-based search engine algorithm, the use of which was confirmed by Google on 26 October 2015. It helps Google to process search results and provide more relevant search results for users.In a 2015 interview, Google commented that RankBrain was the third most important factor in the ranking algorithm along with links and content. As of 2015, RankBrain was used for less than 15% of queries.The results show that RankBrain produces results that are well within 10% of the Google search engine engineer team.RankBrain has helped Hummingbird provide more accurate results because it can learn words and phrases it may not know. It also learns them specifically for the country, as well as language, in which a query is made.

Mobilegeddon Algorithm

Mobilegeddon is a name for Google’s search engine algorithm update of April 21, 2015.The term was coined by Chuck Price in a post written for Search Engine Watch on March 9, 2015. The term was then adopted by webmasters and web-developers.The main effect of this update was to give priority to websites that display well on smartphones and other mobile devices. The change did not affect searches made from a desktop computer or a laptop.

source:wikipedia