TY - CONF AU - Abel, Fabian AU - Coi, Juri De AU - Henze, Nicola AU - Koesling, Arne AU - Krause, Daniel AU - Olmedilla, Daniel A2 - Aberer, Karl A2 - Choi, Key-Sun A2 - Noy, Natasha A2 - Allemang, Dean A2 - Lee, Kyung-Il A2 - Nixon, Lyndon J B A2 - Golbeck, Jennifer A2 - Mika, Peter A2 - Maynard, Diana A2 - Schreiber, Guus A2 - Cudré-Mauroux, Philippe T1 - Enabling Advanced and Context-Dependent Access Control in RDF Stores T2 - Proceedings of the 6th International Semantic Web Conference and 2nd Asian Semantic Web Conference (ISWC/ASWC2007), Busan, South Korea PB - Springer Verlag C1 - Berlin, Heidelberg PY - 2007/november CY - 4825 IS - SP - 1 EP - 14 UR - http://iswc2007.semanticweb.org/papers/1.pdf DO - KW - 2007 access control data_management database information_integration iswc personal_information_management privacy rdf research_09 security semantic_web store trust_(social_sciences) L1 - SN - N1 - N1 - AB - Semantic Web databases allow efficient storage and access to RDF statements. Applications are able to use expressive query languages in order to retrieve relevant metadata in order to perform different tasks. However, access to metadata may not be public to just any application or service. Instead, powerful and flexible mechanisms for protecting sets of RDF statements are required for many Semantic Web applications. Unfortunately, current RDF stores do not provide fine-grained protection. This paper fills this gap and presents a mechanism by which complex and expressive policies can be specified in order to protect access to metadata in multi-service environments. ER -