ISSN:
1572-9974
Schlagwort(e):
Modeling systems
;
modeling languages
;
linear programming
;
production problems
;
transportation problems
Quelle:
Springer Online Journal Archives 1860-2000
Thema:
Informatik
,
Wirtschaftswissenschaften
Notizen:
Abstract In recent years a number of integrated modeling systems have been developed which combine modeling languages with database capabilities to greatly increase the productivity of linear programming, nonlinear programming, and simultaneous equation model builders (Palmer, 1984, Meeraus, 1983, Geoffrion, 1986). Among these systems is GAMS which was developed at the World Bank by Alexander Meeraus. Alongside the development of these systems Arthur Geoffrion has created a general framework for model development which he calls ‘Structured Modeling’. This paper compares the GAMS system to Geoffrion's framework to show (1) which of the capabilities of GAMS are and are not captured in the structured modeling framework and (2) which of the concepts in the structured modeling framework are and are not included in the GAMS system. Notational comparisons are made using the implementation of Structured Modeling presented in Geoffrion (1986a) and the version of GAMS presented in Brooke, Kendrick and Meeraus (1988). The capabilities of the two systems are compared on the basis of a set of characteristics that are considered essential in a modeling system (Fourer, 1983, Krishnan, 1985, Geoffrion, 1986a, 1986b, 1987). The rest of the paper is organized as follows. The structural elements and the organization of each system are introduced through the use of a simple example. A comparison of the two system is then provided. The paper closes with a discussion of user interfaces which may improve the systems.
Materialart:
Digitale Medien
URL:
http://dx.doi.org/10.1007/BF00454702
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