A Page Ranking Algorithm Ranks Web Pages According to Multiple Factors

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A page ranking algorithm ranks web pages according to multiple factors, such as link equity, keyword relevance, and user engagement.

It takes into account the number of high-quality links pointing to a web page, which is a key factor in determining its ranking.

The algorithm also considers the relevance of the content on the web page to the search query, ensuring that users see the most relevant results.

This means that web pages with high-quality, keyword-rich content are more likely to rank higher in search engine results.

The algorithm also looks at user behavior, such as click-through rates and bounce rates, to determine the relevance and usefulness of a web page.

History of PageRank

Sergey Brin and Larry Page, the founders of Google, developed PageRank in 1996. They were trying to create a system to estimate the authority of webpages.

The idea of using links as votes of trust was not new, and researchers like Charles Hubbell and Gabriel Pinski and Francis Narin had explored similar concepts before them. Hubbell's method, published in 1965, identified a person's importance through endorsements from important people.

PageRank was influenced by the work of Wassily Leontief, an economist who developed a method to rank a country's industrial sectors based on how important they are in other industries.

Who Named?

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Larry Page, one of the founders of Google, named PageRank as the primary algorithm to rank web pages according to their score.

Larry Page saw the importance of PageRank on how to implement searches with the user's search browser.

PageRank was named after Larry Page's last name, and it's the key element that the Google search engine is known for.

Larry Page incorporated the ideas of early authors and implemented them in the new technology, which succeeded.

Today, Google still uses the blueprint of PageRank as a search algorithm, but it's more complex and not the same as it was decades ago.

How Is the History of?

The history of PageRank is a fascinating story that involves the contributions of many brilliant minds. Sergey Brin and Larry Page, the founders of Google, developed PageRank in 1996.

Sergey Brin and Larry Page weren't the first to develop a ranking algorithm, Massimo Franceschet dug up a similar method long before they used it at Google. Wassily Leontief, an economist, developed a method to rank a country's industrial sectors by how important they are in other industries on how they manufacture their products.

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Leontief's method was later awarded the Nobel Prize for economic works, showing its significance and impact. Charles Hubbell published a method in 1965 that identifies a person's importance through endorsements from important or known people.

Gabriel Pinski and Francis Narin also developed a method that uses the bibliometrics foundation of ranking, similar to PageRank's reasoning. Jon Kleinberg's theory, published in HITS or Hypertext Induced Topic Search, has received recognition for its similar approach to PageRank.

Brin and Page acknowledged the similarity of their methods to Kleinberg's HITS in their own paper, showing respect for the work of others. PageRank became the widely renowned search engine of Google, revolutionizing the way we search online.

Original Formula

The original formula for PageRank is a bit complex, but it's based on the idea that each link from one page to another is a vote. This vote depends on the collective weight of all the pages that link to the page being voted for.

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The formula is PR(A) = 1-df/Np + df (PR(B)/Ln(B) + PR(C)/Ln(C) + PR(D)/Ln(D) + …), where PR stands for PageRank, df is the damping factor, and Ln is the number of links on each page.

The damping factor, df, is a probability that a user will get bored and leave a page. It's a crucial part of the formula, as it helps to prevent infinite loops.

The number of links on each page, Ln, plays a significant role in determining the PageRank of a page. The more links a page has, the more votes it receives.

The formula also takes into account the number of pages, Np, that are used within the calculation. This helps to ensure that the PageRank is calculated accurately.

If a page has no links pointing to it, its PageRank will not be zero, but rather a value that is determined by the damping factor and the number of pages.

PageRank Algorithm

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The PageRank algorithm is a crucial component of ranking web pages according to their relevance and importance. The algorithm uses a damping factor to determine the probability of a web surfer continuing to click on websites.

The damping factor, or df, is the probability that a web surfer will jump to a node with no links, completing the algorithm's factor in determining the PageRank score of a specific website. This factor is essential in the PageRank algorithm, as it helps to prevent infinite loops and ensures that the algorithm converges.

The PageRank algorithm also takes into account the behavior of a directed surfer, who navigates between pages based on the content and search phrase used. The directed surfer model chooses another term in accordance with the factors that determine its behavior, making it a more intelligent user model.

What is Damping Factor?

It completes the algorithm's factor of determining the PR or PageRank of a specific website.

The probability of a web surfer jumping on a node that has no links is defined by the Damping Factor.

The Damping Factor is crucial in understanding how a web surfer behaves, and it's a key component in calculating the PageRank of a website.

Surfer Models

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The PageRank algorithm has undergone significant modernizations over the years, and one key change was the introduction of the Reasonable Surfer model in 2012.

This model assumes that users don't behave chaotically on a page and click only those links they are interested in at the moment. For example, when reading a blog article, you are more likely to click a link in the article's content rather than a Terms of Use link in the footer.

The Random Surfer model, on the other hand, is based on the prediction probability that a user will visit a web page based on a directed graph and matrix.

The Directed Surfer model is a more intelligent user who stochastically navigates between pages based on the content and the search phrase used. It chooses another term in accordance with the factors that determine its behavior.

The Damping Factor, or df, is the PageRank identifier of a web surfer's manner and completes the algorithm's factor of determining the PR or PageRank of a specific website. It sees the probability of a web surfer jumping on a node that has no links.

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The Reasonable Surfer model can potentially use a great variety of other factors when evaluating a link's attractiveness, including link position and page traffic. These factors were carefully reviewed by Bill Slawski in his article, but the two factors discussed most often by SEOs are link position and page traffic.

Position and Authority

John Mueller confirmed that links placed within the main content of a page weigh more than other links.

Links in the main content are considered more valuable because they're where the primary content of the page resides.

Footer links and navigation links pass less weight, as confirmed by Google spokesmen and real-life cases.

In one case, adding a link from the navigation menu to the main content resulted in a 25% traffic uplift.

Links in the author's bio are assumed to be less valuable than content links, but still pass some weight, as mentioned by Matt Cutts.

Generalized Eigenvector Centrality

Generalized Eigenvector Centrality is a variant of PageRank that gives importance to the outgoing node under its relation.

Credit: youtube.com, An Overview of Eigenvector Centrality and Pagerank for Social Networks.

Eigenvector centrality has similarities in the node's connection, but it has a different effect on the results of the ranking.

In a social network, if one person has a connection to a popular person, their social network eventually grows.

Eigenvector centrality accumulates or receives a relation to the other connecting node, but gives importance to the outgoing node under its relation.

Spam Prevention and Anti-Spam Efforts

Google's algorithms are designed to ignore certain spammy links when calculating PageRank, rather than downranking the whole website.

Google's anti-spam efforts are getting better, with John Mueller stating that "random links collected over the years aren't necessarily harmful" and can be ignored.

However, if your website's backlinks get ignored too much and too often, you still have a high chance of getting a manual action.

Manual actions are reserved for cases where an otherwise decent site has unnatural links pointing to it on a scale that is so large that Google's algorithms are not comfortable ignoring them.

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To identify problematic links, use a backlink checker like SEO SpyGlass and pay attention to high- and medium-risk backlinks in the Penalty Risk section.

You can also export the disavow file from SEO SpyGlass and submit it to Google via GSC to exclude problematic links.

Google's algorithms can automatically ignore spammy links, but it's still important to monitor your backlink profile to catch any issues early on.

In some cases, Google may not be able to ignore spammy links, and manual actions may be necessary to prevent manipulation of PageRank.

PageRank Models and Factors

The PageRank algorithm has undergone significant modernizations, moving from the Random Surfer model to the Reasonable Surfer model in 2012. This change assumes that users don't behave chaotically on a page and click only links they're interested in.

The Reasonable Surfer model can use various factors to evaluate a link's attractiveness, with SEOs often discussing link position and page traffic. These factors are carefully reviewed by Bill Slawski, but we'll focus on two key ones.

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The top 8 SEO ranking factors include Quality Content, Backlinks, Technical SEO, Keyword Optimization, User Experience (UX), Schema Markup, Social Signals, and Brand Signals. However, we'll concentrate on the evolution of PageRank models.

The Random Surfer PageRank Model describes a random visitor's behavior visiting a web page, aiming to calculate the probability of how it goes from one page to another. This model provides a basis for the algorithm to determine the proper score of such web pages.

The Directed Surfer Model PageRank is a more intelligent user who stochastically navigates between pages based on content and search phrases used. This approach is dependent on the PageRank score of a page and multiple queries.

The PageRank score is used by web crawlers to determine ranked information, which is saved in their library, called data banks. This helps provide more quality searches by identifying ranking sites with quality content.

Here are the key PageRank models and factors:

Computing and Variations

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Computing PageRank can be done in various ways, including iteratively using the power method, as seen in Example 1. This method involves repeating a computation until it converges.

There are also different programming languages that can be used to compute PageRank, such as Python, as shown in Example 2. Python uses libraries like NetworkX to create a graph structure for the web page.

In addition to programming languages, PageRank can also be computed using mathematical formulas, as demonstrated in Example 4. The formula PR(A) = PR(D)/Ld + PR(B)/Lb + PR(C)/Lc is used to calculate the PageRank of website A.

The damping factor probability is an important parameter in computing PageRank, as seen in Example 3. The damping factor is used to determine the probability of a user clicking on a link.

Here are some common methods for computing PageRank:

  • Iterative computation using the power method
  • Using programming languages like Python and MATLAB
  • Mathematical formulas, such as the one in Example 4

These methods can be used to compute PageRank in various ways, depending on the specific application and requirements.

What Are the Variations?

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Computing PageRank can be done in various ways, including iterative and algebraic methods. The iterative computation method is a procedure in mathematics that includes an initial value to generate an approximation to improve the solution.

There are different variations of PageRank, including the power method, which is used in iterative computations. This method is the same as algebraic ones, including their operators.

The power method uses the same identifier, such as PR for PageRank, and p is the power value, that begins the computation for the 0. The iterative method of computing is to repeat its computation until its occurrence ends.

PageRank can also be computed using Python with the help of libraries such as NetworkX. This involves importing the necessary libraries, initializing the graph, and using the pagerank_numpy() method to get the PageRank.

In addition, PageRank can be computed using MATLAB/Octave. The theoretically-defined PageRank score is the minimal chance that eventually there are some user that randomly clicks links on every website.

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Here are the different variations of PageRank:

The choice of variation depends on the specific use case and the desired level of accuracy.

The Present

The PageRank algorithm is still alive and kicking, despite some claims to the contrary. Back in 2019, a former Google employee revealed that the original algorithm hadn't been in use since 2006.

Google did file a new patent in 2006 for a ranking system, which might have replaced the original PageRank. This patent was for "Producing a ranking for pages using distances in a web-link graph".

In 2016, a former Google employee Andrey Lipattsev confirmed that link authority is still a crucial ranking signal. He mentioned that content and links pointing to a site are key factors.

Google's John Mueller reinforced this in 2020, stating that PageRank is still used internally, albeit with many modifications and quirks. He emphasized that it's not the same algorithm as described in the original paper.

Google's Implementation and Rules

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Google's algorithm is designed to favor newer pages for certain searches, giving them a boost in ranking.

Google also adds diversity to a SERP for ambiguous keywords, like "Ted" or "WWF", making it easier for users to find relevant information.

Websites that you visit frequently get a SERP boost for your searches, thanks to Google's user browsing history feature.

This means that if you search for "toasters" after searching for "reviews", Google is more likely to rank toaster review sites higher in the SERPs.

Google chooses Featured Snippets content based on a combination of content length, formatting, page authority, and HTTPS usage.

For local searches, Google often places local results above the "normal" organic SERPs, making it easier for users to find local businesses.

Special Google Rules

Google's algorithm is a complex beast, and understanding its special rules can make a big difference in how your website ranks.

Google gives a boost to newer pages for certain searches, thanks to the Query Deserves Freshness rule. This means that if you've recently published new content, it's more likely to show up in search results.

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For ambiguous keywords, Google may add diversity to the search engine results page (SERP) to provide more relevant results. This is especially useful for keywords like "Ted", "WWF", or "ruby".

Websites that you visit frequently get a SERP boost for your searches, thanks to the User Browsing History rule. This is a great reason to keep visiting your favorite websites!

Search chain influence search results for later searches, thanks to the User Search History rule. For example, if you search for "reviews" then search for "toasters", Google is more likely to rank toaster review sites higher in the SERPs.

Google chooses Featured Snippets content based on a combination of content length, formatting, page authority, and HTTPS usage. This is according to an SEMRush study.

Google gives preference to sites with a local server IP and country-specific domain name extension, thanks to the Geo Targeting rule. This is especially useful for businesses that target specific regions.

Websites with curse words or adult content won't appear for people with Safe Search turned on, thanks to the Safe Search rule. This is a great feature for families and individuals who want to keep their search results clean.

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Google has higher content quality standards for "Your Money or Your Life" keywords, thanks to the "YMYL" Keywords rule. This means that websites that provide critical information, such as financial or health advice, need to meet higher standards.

Google "downranks" pages with legitimate DMCA complaints, thanks to the DMCA Complaints rule. This is a great reason to keep your website's content up-to-date and compliant with copyright laws.

The so-called "Bigfoot Update" supposedly added more domains to each SERP page, thanks to the Domain Diversity rule. This is a great way for smaller websites to get more visibility.

Google sometimes displays different results for shopping-related keywords, like flight searches, thanks to the Transactional Searches rule. This is especially useful for businesses that sell products or services online.

For local searches, Google often places local results above the "normal" organic SERPs, thanks to the Local Searches rule. This is a great way for local businesses to get more visibility.

Certain keywords trigger a Top Stories box, thanks to the Top Stories box rule. This is especially useful for news and current events websites.

Big brands get a boost for certain keywords, thanks to the Big Brand Preference rule. This is a great reason to keep your brand's online presence strong.

Domain or brand-oriented keywords bring up several results from the same site, thanks to the Single Site Results for Brands rule. This is a great way for big brands to dominate search results.

Google Connection

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Link juice is a slang term used to describe the links in the content, but it's not connected to PageRank.

PageRank is affected by link juice through how backlinks are used to reference a web page. This means that referencing other web domain links is not just providing link juices, but also providing factual information that's relevant between pages.

A post that uses a link transfers a part of the ranking, and SEO professionals have to be mindful of it.

Search Engine Optimization and Crawling

Search engines use backlinks as a reliable authority criterion to form initial search engine results pages (SERPs). Backlinks remain indispensable for search engines despite having other data points like user behavior and BERT adjustments.

Google has invested tens of years in developing PageRank, and it's unlikely they'll discard it. PageRank is a mature web technology that Google is very good at.

Search engines use PageRank to determine ranked information by crawlers, which saves it in their library, called data banks. This crawling method helps provide quality searches by identifying ranking sites with quality content.

Google Directory

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The Google Directory was a discontinued web directory that was used by most SEO and webmasters to determine the PageRank until July 20, 2011.

It's considered the most preferable data to look at because of most issues regarding the PageRank toolbar's accuracy.

The Google Directory provides all details regarding the description of the website, including the PageRank.

How Search Engines Use Crawling

Search engines use web crawlers to crawl through websites and new websites, with the help of PageRank which determines ranked information by crawlers and saves it in their library, called data banks.

Web crawlers collect web page information and index a relative website, according to Martin Splitt of Google Search Relation.

The crawling method used by search engines indexes categorical information such as location, language, and previously searched data.

Web crawlers do not see or determine the quality of the page other than the PageRank itself.

The web browser plays a big role in providing quality information for the web server, by contributing to the referral perspective of the web user assigned to a specific computer.

How Robots.txt Affects Websites?

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Robots.txt files contain instructions for web crawlers to ignore specific pages that aren't necessary for search.

Some websites don't need a Robots.txt file, but it's essential for blocking non-public pages that contain directory files irrelevant to searches.

A Robots.txt file prevents crawlers from accessing multimedia indexing, such as PDF files, which can miscalculate PageRank.

It's crucial to use a Robots.txt file to tell search engine crawlers which URLs or website links to access, according to its definition.

By blocking non-public pages, you can focus crawler budget on pages that matter most for search engine optimization.

This simple step can prevent the misattribution of PageRank due to non-public pages, ensuring your website's credibility and search engine ranking.

Social Media's Impact on Website Rankings

Social media can significantly impact website rankings. Google uses data from Google Chrome to determine how many people visit a site, and sites with lots of direct traffic are likely higher quality sites.

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Direct traffic is a confirmed Google ranking factor, with a significant correlation between direct traffic and Google rankings found in a SEMRush study. This means that sites with a strong social media presence can drive more direct traffic and improve their rankings.

Sites with repeat visitors may get a Google ranking boost, which can be achieved through social media engagement. When users engage with a website on social media, they're more likely to return to it.

Pogosticking, a type of bounce where users click on other search results, can harm rankings. However, if users are clicking on social media links and returning to the original site, it's a positive signal for rankings.

Dwell time, or how long users spend on a page, is also an important ranking factor. If users are engaging with a website on social media and then spending a long time on the site, it's a good sign for rankings.

Overall, social media can have a significant impact on website rankings by driving direct traffic, repeat visitors, and improving dwell time.

What Are the Factors?

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There are several factors that influence how a page ranking algorithm ranks web pages. Quality Content is the most important SEO factor, with Google wanting to show users high-quality, informative, and relevant content.

Google takes into account over 200 factors when ranking web pages, but the Top 8 Factors to focus on first are: Quality Content, Backlinks, Technical SEO, Keyword Optimization, User Experience (UX), Schema Markup, Social Signals, and Brand Signals.

Backlinks act like votes of confidence, with high-quality backlinks increasing a website's ranking. Technical SEO is also crucial, as a website's speed, mobile-friendliness, and crawlability can affect its ranking.

YouTube videos are given preferential treatment in search engine results pages (SERPs), likely due to Google owning the platform.

Here are the Top 8 Factors in a concise list:

  • Quality Content
  • Backlinks
  • Technical SEO
  • Keyword Optimization
  • User Experience (UX)
  • Social Signals
  • Schema Markup
  • Brand Signals

Social media links can affect the PageRank algorithm, even if they don't directly influence it. This is because visitors drawn in from social media can engage with the website and improve its ranking over time.

RankDex, a page-ranking method introduced by Robin Li in 1996, influenced the development of PageRank and was cited on Google's patent.

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RankDex, a page-ranking method introduced by Robin Li in 1996, was the first web search provider and influenced the development of Google's PageRank algorithm. It used hyperlinks as the primary element to determine the quality of a website.

RankDex was awarded its patent in 1996, two years before Google's PageRank was patented with a similar approach. Larry Page referenced RankDex and acknowledged Li's work for influencing the outcome of PageRank.

There are several other algorithms related to PageRank that have been developed over the years. Here are some of them:

  1. Hilltop Algorithm: This algorithm focuses on the relationship between "experts" and "authority" pages, and was created by Krishna Bharat and George A. Mihăilă in 2003.
  2. TrustRank Algorithm: This algorithm helps Google separate spam web pages from legitimate pages by identifying quality web pages. It was introduced by Zoltan Gyongyi, Hector Garcia-Molina, and Jan Pedersen.
  3. EigenTrust Algorithm: This algorithm is used for peer-to-peer reputation management and was developed by Sep Kamvar, Mario Schlosser, and Hector Garcia-Molina.
  4. SimRank Algorithm: This algorithm compares domains that have similar relationships and was developed to identify websites with similar characteristics.
  5. VisualRank Algorithm: This algorithm identifies the rank of images based on the quality of their content, using computer vision technology and LSH or locality-sensitive hashing.
  6. Katz Centrality: This algorithm determines the centrality of a link within the network based on a theoretic graph, and was presented by Leo Katz in 1953.

These algorithms have been developed to improve the accuracy and relevance of search results, and are an important part of the page-ranking process.

Frequently Asked Questions

What is PageRank based on?

PageRank is based on the number and quality of links pointing to a web page. This determines the page's importance and ranking.

What is the formula for page ranking algorithm?

The PageRank algorithm formula is r = (1-P)/n + P*(A'*(r./d) + s/n), where P is a damping factor and A' is a matrix of link probabilities. This formula calculates a page's ranking score based on the probability of a random surfer clicking on a link.

Which technique is used in the PageRank algorithm to determine the rank of a web page?

The PageRank algorithm uses a random internet surfer model to determine the rank of a web page, where the probability of reaching a page is based on the number and quality of links pointing to it. This technique is known as "random surfer" or "link-based" ranking.

Francis McKenzie

Writer

Francis McKenzie is a skilled writer with a passion for crafting informative and engaging content. With a focus on technology and software development, Francis has established herself as a knowledgeable and authoritative voice in the field of Next.js development.

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