Mixed Content and Mixed Metadata in the NSDL William Y. Arms Professor, Computer Science Cornell University The National Science Digital Library (NSDL) is notable for the extreme variety of its content and the range of metadata, from excellent to negligible. As part of their work for the NSDL Core Integration, researchers at Cornell are developing methods for building digital library services with mixed metadata and content. This briefing will emphasize recent developments in information discovery that apply to highly heterogenous collections.   Web Link: http://www.infosci.cornell.edu/dl/core-integration.html Handout: Information Discovery in the National Science Digital Library Presentation: Mixed Content, Mixed Metadata (PPT)