Semantic Scholars’ Grid I Local MD Store Local Harvest Store Fetch MD and Documents Science.gov PubMed Google Scholar etc. Dspace e-Prints Gatherer Query and Get list Indexer Analyzer Index all Local MD Run filter such as OSCAR2 on harvested MD and documents Store new MD

Semantic Scholars’ Grid II ACM IEEE Google Scholar etc. Wiley Local MD Store CiteULike Connotea Del.icio.us etc. Foreign User Interface Plug-in Synchronize SSG and foreign MD Updater Community Tools SSG Viewer Instant Citation Index etc. Update local MD Control foreign interactions View all MD’ Access Community Tools Update and view foreign MD

SSG Notes It is a Federation of Meta-data Enrichment Tools Local store typically holds all metadata for subset of interesting material Every record whether local or in "foreign" system should be labeled by date created and source to aid version control on update Foreign editing can be tricky to detect Could use check sum Not clear get back same as you input in local foreign  local (e.g. newlines mapped differently) Everything is a WS