Page rank


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Page rank

  1. 1. Page Rank 200702052 Jongmin Park 2013.03.11 1
  2. 2. Contents Introduction Basic Principle What I think Q&A 2
  3. 3. Introduction • What is PageRank? PageRank is an algorithm used by Google Search to rank websites in their search engine results. First introduced by Sergey Brin & Larry Page in 1998 3
  4. 4. Introduction Google Says : PageRank works by counting the number and quality of links to a page to determine a rough estimate of how important the website is. The underlying assumption is that more important websites are likely to receive more links from other websites. Wikipedia Shows : 4
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  6. 6. Hard to understand 6
  7. 7. Easy Pictures I got 10/3 * @ 10 Score I got 10/3 * @ I got 10/3 * @ PageRank has assume Random Suffer Model that works visiting every website. But the user who want to find good website doesn’t feel good at chosen website, the user is trying to visit other website. That probability is going to be ’@’ (Damping Factor) 7
  8. 8. Basic Principle 1. It is important that who links to you. If low score web site’s score links your web site, that doesn’t good for your score too 2. Google trusts Government website. It’s good if .edu or .gov websites make a connection with your website. It’s going to make your score high 3. If spam websites are trying to make a connection with your websites, Google is also trying to misunderstand that you’re a website as a spam. 4. Better : Less, but Higher score web site link your website Bad : Many, but Small score web site link your website 8
  9. 9. What I think In Google search algorithm, We don’t understand whole things about Google’s strategy though, The main principle = (Believable web site has big score like .gov and .edu and if they make links, liked web site’s score have risen) doesn’t change actually. Google is the most successful company in the world 9
  10. 10. Q&A 10
  11. 11. Thank You 11