Want to know how many dentists are in one mile vicinity, if they are next to tube stop and are specialists in teeth whitening? Freebase say they can not only give you this information, but that the database behind it will be build Wikipedia style.
Open source graph visualization software. Takes descriptions of graphs in a simple text language, makes diagrams formatted as images, SVG for web, PS for PDF, GXL (XML dialect), and more.
This diagram depicts a spectrum of information sharing capabilities. Moving from lower right to upper left of the diagram, we see that more expressive forms of metadata and semantic modeling encompass the simpler forms, and extend their capabilities. From
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R. Gummadi, X. Li, R. Govindan, C. Shahabi, and W. Hong. SenSys '04: Proceedings of the 2nd international conference on Embedded networked sensor systems, page 273--274. New York, NY, USA, ACM Press, (2004)
K. Kyriakopoulos, and K. Psarris. PACT '05: Proceedings of the 14th International Conference on Parallel Architectures and Compilation Techniques (PACT'05), page 143--156. Washington, DC, USA, IEEE Computer Society, (2005)
