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h1. Karma
[http://www.isi.edu/integration/karma/]
Karma is a Data Integration Tool by USC. It enables users to quickly and easily integrate data from a variety of data sources including databases, spreadsheets, delimited text files, XML, JSON, KML and Web APIs to RDF.
- [http://www.isi.edu/integration/karma/]: the Karma website is very informative, including papers and videos.
It describes applications to biosciences, cultural heritage (Smithsonian), geo mashups, web APIs (eg Twitter).
- It includes a nice graphical tool for creating the semantic mapping of data, and a nice informative way of presenting it, eg:

!Karma-biomedical-mapping.png!

- It includes Builds the mapping semi-automatically: uses field pattern learning (based on Conditional Random Fields) and ontology graph traversal to help the user construct the mapping.
- Property domain and range definitions are very important for Karma's work. I think that CRM is a bit too abstract to be an appropriate target for Karma, but it would be interesting to try
- Stronger semantic capabilties than Google Refine, but weaker (or no) data munging capabilities (see review below)
- I wonder if it an be integrated with the RDB2RDF W3C standard, and maybe with Ultrawrap.
- Karma is a data structure mapping tool, not an individual (term) matching tool. The latest application (see below) includes term matching, but no tool support