| 词条 | Google Panda |
| 释义 |
Google Panda is a major change to Google's search results ranking algorithm that was first released in February 2011. The change aimed to lower the rank of "low-quality sites" or "thin sites",[1] in particular "content farms",[2] and return higher-quality sites near the top of the search results. 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.[3] This change reportedly affected the rankings of almost 12 percent of all search results.[4] Soon after the Panda rollout, many websites, including Google's webmaster forum, became filled with complaints of scrapers/copyright infringers getting better rankings than sites with original content. At one point, Google publicly asked for data points to help detect scrapers better.[5] In 2016, Matt Cutts, Google's head of webspam at the time of the Panda update, commented that "with Panda, Google took a big enough revenue hit via some partners that Google actually needed to disclose Panda as a material impact on an earnings call. But I believe it was the right decision to launch Panda, both for the long-term trust of our users and for a better ecosystem for publishers."[2]Google's Panda received several updates after the original rollout in February 2011, and their effect went global in April 2011. To help affected publishers, Google provided an advisory on its blog,[6] thus giving some direction for self-evaluation of a website's quality. Google has provided a list of 23 bullet points on its blog answering the question of "What counts as a high-quality site?" that is supposed to help webmasters "step into Google's mindset".[7] The name "Panda" comes from Google engineer Navneet Panda, who developed the technology that made it possible for Google to create and implement the algorithm.[8][4] Ranking factorsThe Google Panda patent (patent 8,682,892), filed on September 28, 2012, was granted on March 25, 2014. The patent states that Google Panda creates a ratio with a site's inbound links and reference queries, search queries for the site's brand. That ratio is then used to create a sitewide modification factor. The sitewide modification factor is then used to create a modification factor for a page based upon a search query. If the page fails to meet a certain threshold, the modification factor is applied and, therefore, the page would rank lower in the search engine results page.[9] Google Panda affected the ranking of an entire site or a specific section rather than just the individual pages on a site.[10] UpdatesFor the first two years, Google Panda's updates were rolled out about once a month, but Google stated in March 2013 that future updates would be integrated into the algorithm and would therefore be less noticeable and continuous.[11][12] Google released a "slow rollout" of Panda 4.2 starting on July 18, 2015.[13] See also
References1. ^{{cite web|url=https://searchengineland.com/how-google-panda-places-updates-created-a-rollercoaster-ride-for-iyp-traffic-101683|title=How Google Panda & Places Updates Created A Rollercoaster Ride For IYP Traffic|last=|first=|date=|website=|publisher=SearchEngineLand|archive-url=|archive-date=|dead-url=|accessdate=April 11, 2018}} {{Google Inc.}}2. ^1 {{Cite news|url=https://www.oreilly.com/ideas/media-in-the-age-of-algorithms|title=Media in the age of algorithms|last=O'Reilly|first=Tim|date=2016-11-16|newspaper=O'Reilly Media|access-date=2016-11-17}} 3. ^{{Citation|url=http://news.cnet.com/8301-31921_3-20054797-281.html|title=Testing Google's Panda algorithm: CNET analysis|publisher=CNET.com|date=April 18, 2011}} 4. ^1 {{Citation|title=TED 2011: The 'Panda' That Hates Farms: A Q&A With Google’s Top Search Engineers|url=https://www.wired.com/epicenter/2011/03/the-panda-that-hates-farms|publisher=Wired.com|date=March 3, 2011}} 5. ^{{cite web|url=http://searchenginewatch.com/article/2105023/Google-Losing-War-With-Scraper-Sites-Asks-For-Help|title=Google Losing War With Scraper Sites, Asks For Help|publisher=Search Engine Watch}} 6. ^{{cite web|url=http://googlewebmastercentral.blogspot.com/2012/04/another-step-to-reward-high-quality.html|title=Another step to reward high-quality sites|publisher=Official Google Webmaster Central Blog}} 7. ^{{cite web|publisher=Google|url=http://googlewebmastercentral.blogspot.com/2011/05/more-guidance-on-building-high-quality.html|title=More guidance on building high-quality sites|accessdate=April 11, 2018}} 8. ^Google Panda at Brafton 9. ^{{cite web|last=Panda|first=Navneet|title=US Patent 8,682,892|url=http://patft.uspto.gov/netacgi/nph-Parser?Sect1=PTO2&Sect2=HITOFF&p=1&u=%2Fnetahtml%2FPTO%2Fsearch-adv.htm&r=1&f=G&l=50&d=PALL&S1=08682892&OS=PN/08682892&RS=PN/08682892|publisher=USPTO|accessdate=March 31, 2014}} 10. ^{{cite web|url=https://searchenginewatch.com/sew/study/2122234/panda-dna-algorithm-tests-google-panda-update|title=Algorithm tests on Google Panda|last=van der Graaf|first=Peter|date=November 3, 2011|website=|publisher=Search Engine Watch|archive-url=|archive-date=|dead-url=|access-date=}} 11. ^{{cite web|url=https://searchengineland.com/google-panda-to-be-integrated-into-the-search-algorithm-panda-everflux-151528|title=Google: Panda To Be Integrated Into The Search Algorithm (Panda Everflux)|last=Schwartz|first=Barry|date=|website=|publisher=Search Engine Land|archive-url=|archive-date=|dead-url=|accessdate=May 26, 2014}} 12. ^{{cite web|title=Google Algorithm Change History|url=http://moz.com/google-algorithm-change|publisher=Moz|accessdate=March 31, 2014}} 13. ^{{cite web|title=Google Panda 4.2 Is Here; Slowly Rolling Out After Waiting Almost 10 Months|url=http://searchengineland.com/google-panda-4-2-is-here-slowly-rolling-out-after-waiting-almost-10-months-225850#|publisher=Search Engine Land|accessdate=July 22, 2015}} 4 : Search engine optimization|Link analysis|Google Search|Computer-related introductions in 2011 |
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