Chapter 1. Introduction to Web Search Engines 1 Chapter 2. Crawling, Indexing, and Query Processing 15 Chapter 3. Ranking Webpages by Popularity 25 Chapter 4. The Mathematics of Google's PageRank 31 Chapter 5. Parameters in the PageRank Model 47 Chapter 6. The Sensitivity of PageRank 57 Chapter 7. The PageRank Problem as a Linear System 71 Chapter 8. Issues in Large-Scale Implementation of PageRank 75 Chapter 9. Accelerating the Computation of PageRank 89 Chapter 10. Updating the PageRank Vector 99 Chapter 11 . The HITS Method for Ranking Webpages 115 Chapter 12. Other Link Methods for Ranking Webpages Chapter 13. The Future of Web Information Retrieval Chapter 14. Resources for Web Information Retrieval Chapter 15. The Mathematics Guide Chapter 16. Glossary