The Semantic Web - ISWC 2009 8th International Semantic Web Conference, ISWC 2009, Chantilly, VA, USA, October 25-29, 2009. Proceedings - Bernstein, Abraham; Karger, David R.; Heath, Tom; Feigenbaum, Lee; Maynard, Diana; Motta, Enrico; Thirunarayan, Krishnaprasad (Springer Berlin Heidelberg, 2009)