Many decisions require not a single solution alternative, but a set or portfolio of alternatives. For example, a business generally produces not a single product, but a portfolio of products, and a project is tackled not by a single individual, but by a team of individuals. Unfortunately, the portfolio selection problem has been largely neglected in the literature. Though many specific problem environments have been discussed using heuristic, ad hoc methods, no general methodology or theory has been developed. This paper proposes an object-oriented framework to provide a theoretical foundation for future research on the portfolio selection problem.
Weistroffer, Heinz Roland and Smith, Charles H.
"A Framework for Describing and Classifying Multicriteria Portfolio Selection Problems: An Object-Oriented Approach,"
Journal of International Technology and Information Management: Vol. 14
, Article 3.
Available at: http://scholarworks.lib.csusb.edu/jitim/vol14/iss3/3