Infodynamics. Part III. Information integration and tractability

For Pt. 2 see ibid., (2004). For Pt.1 see ibid., p.170-175 (2002). This paper expands the use of analogies in thermodynamics to explore concepts in the characterization of information systems. The focus is on systems of liquid-liquid equilibrium and how they are similar to information-systems integration. New ideas, such as metrics, are introduced for tractability and disjunction in information-systems integration. It describes the role of ontology and suggests directions for future research in this area. This paper is the third in a series of papers in the newly emerging and interdisciplinary field of "infodynamics".