May 2022
Beginner to intermediate
448 pages
11h 39m
English
Content preview from Algorithms For Dummies, 2nd Edition
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Chapter 11
Getting the Right Web page
IN THIS CHAPTER
Understanding why finding what you want on the web is hard
Reviewing problems that PageRank solves
Implementing the PageRank algorithm with teleporting
Learning how PageRank usage is evolving
The last few chapters review graphs at length. The web is one of the most interesting examples of a graph structure because of the extent and complexity of its interconnected pages. This chapter explains why the ability to search for information was both important and challenging, and how early search engines almost failed in their task until Google and its search algorithm, the PageRank, appeared.
After providing an understanding of the basic algorithms that allow graph traversal and extraction of useful structures (such as the presence of clusters or communities), this chapter completes the discussion of graphs by presenting the PageRank algorithm that has revolutionized people’s lives as much as the web and Internet did because it makes the web usable. The PageRank algorithm transforms links on pages into recommendations, akin to the ...
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