Chapter 19:Information Retrieval Relevance Ranking Using Terms Relevance Using Hyperlinks Synonyms.,Homonyms,and Ontologies Indexing of Documents Measuring Retrieval Effectiveness Web Search Engines Information Retrieval and Structured Data Directories Database System Concepts-5th Edition,Sep 2,2005 19.2 ©Silberschat乜，Korth and SudarshanDatabase System Concepts - 5 19.2 ©Silberschatz, Korth and Sudarshan th Edition, Sep 2, 2005 Chapter 19: Information Retrieval Relevance Ranking Using Terms Relevance Using Hyperlinks Synonyms., Homonyms, and Ontologies Indexing of Documents Measuring Retrieval Effectiveness Web Search Engines Information Retrieval and Structured Data Directories