ScientificCommons.org is an initiative of the Institute for Media and Communications Management at the University of St. Gallen. It indexes both metadata and full-text from global digital repositories. It uses OAI-PMH to identify relevant documents. The full-text documents are in PDF, PowerPoint, RTF, Microsoft Word, and Postscript formats. After being retrieved from their original repository, the documents are cached locally at ScientificCommons.org. It has indexed about 13 million documents from over 800 repositories.
Here are some additional features from the About ScientificCommons.org page:
Identification of authors across institutions and archives: ScientificCommons.org identifies authors and assigns them their scientific publications across various archives. Additionally the social relations between the authors will be extracted and displayed. . . .
Semantic combination of scientific information: ScientificCommons.org structures and combines the scientific data to knowledge areas with Ontology’s. Lexical and statistical methods are used to identify, extract and analyze keywords. Based on this processes ScientificCommons.org classifies the scientific data and uses it e.g. for navigational and weighting purposes.
Personalization services: ScientificCommons.org offers the researchers the possibilities to inform themselves about new publications via our RSS Feed service. They can customize the RSS Feed to a special discipline or even to personalized list of keywords. Furthermore ScientificCommons.org will provide an upload service. Every researcher can upload his publication directly to ScientificCommons.org and assign already existing publications at ScientificCommons.org to his own researcher profile.