What is Page Rank?
PageRank is an algorithm used by search engines to measure the importance or relevance of web pages. It was developed by Larry Page and Sergey Brin, the co-founders of Google, and is a fundamental component of Google's search engine ranking system.
The basic idea behind PageRank is to assign a numerical value, called a PageRank score, to each web page based on the number and quality of other web pages that link to it. The underlying assumption is that if a page is frequently linked to by other reputable pages, it is likely to be more valuable or authoritative. In other words, the more incoming links a page has from other high-ranking pages, the higher its PageRank score will be.
PageRank operates on the principle of "voting." When a page links to another page, it is essentially casting a vote for that page's importance. However, not all votes are equal; the importance of a page's vote is determined by its own PageRank score. Pages with higher PageRank scores contribute more weight to the pages they link to. This creates a recursive process where pages with higher scores pass on more authority to the pages they link to, and this flow of authority propagates throughout the web.
The PageRank algorithm iteratively calculates these scores until convergence, taking into account the entire link structure of the web. In the early days of Google, PageRank played a significant role in determining the order of search results. However, over time, Google has incorporated numerous other ranking factors to provide more relevant and comprehensive search results to users.
Here are some examples:
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