A pre-relational databases datamodel. "Preceeded" by the relational model since the flexibility of this makes it hard to work with. Now re-invented in RDF :)
Stock Cloud began as data mining experiment with a very simple goal — "Could we extract Business Partnerships by tracking press releases?" To accomplish this we selected a press release distribution agency, MarketWire, and began tracking releases. Usi
G. Venturini, M. Slimane, F. Morin, and J. Asselin de Beauville. Genetic Algorithms: Proceedings of the Seventh
International Conference, page 696--703. Michigan State University, East Lansing, MI, USA, Morgan Kaufmann, (19-23 July 1997)