PageRank - History of Web Search and Google's Algorithm - L25

Learn the evolution of web search technology from early keyword-based systems to Google's revolutionary PageRank algorithm in this comprehensive lecture. Explore the historical development of search engines, starting with directory-based approaches like Yahoo!'s indexing system, then discover how Google transformed web search through PageRank's innovative link analysis methodology. Understand the mathematical foundations behind PageRank, including how the teleportation concept ensures ergodicity in the web graph and enables efficient computation using the sparse power method for ranking web pages based on their link structure and authority.