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
P. Suppes. Logic, Methodology and Philosophy of Science: Proceedings of the 1960 International Congress, page 252-261. Stanford, Stanford University Press, (1962)
U. Schulz. Bericht über den 28. Kongreß der Deutschen Gesellschaft für Psychologie, Band 2: Psychologische methodik und mathematische psychologie., page 75--89. Place unknown, (Month unknown 1972)