13th International Conference on Cooperative Information Systems (CoopIS 2005).- Semantic Matching: Algorithms and Implementation.- Semantics-Guided Clustering of Heterogeneous XML Schemas.- A Formal Framework for Adaptive Access Control Models.- C&O-2005: The AAAI'05 Workshop on Contexts and Ontologies.- Putting Things in Context: A Topological Approach to Mapping Contexts to Ontologies.- 4th International Conference on Ontologies, DataBases, and Applications of Semantics (ODBASE 2005).- Creating Ontologies for Content Representation-The OntoSeed Suite.- Security Ontology to Facilitate Web Service Description and Discovery.

This LNCS Journal presents notable work that, in one way or another, addresses research and development on issues related to data semantics. Its scope ranges from theories supporting the formal definition of semantic content to innovative domain-specific applications of semantic knowledge. The journal addresses researchers and advanced practitioners working in the field, from the semantic web and mobile information services to ontologies and artificial intelligence.