Scenario optimization

Scenario optimization

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Article ID: iaor19912117
Country: Switzerland
Volume: 30
Start Page Number: 63
End Page Number: 80
Publication Date: Mar 1991
Journal: Annals of Operations Research
Authors:
Abstract:

Uncertainty in the parameters of a mathematical program may present a modeller with considerable difficulties. Most approaches in the stochastic programming literature place an apparent heavy data and computational burden on the user and as such are often intractable. Moreover, the models themselves are difficult to understand. This probably explains why one seldom sees a fundamentally stochastic model being solved using stochastic programming techniques. Instead, it is common practice to solve a deterministic model with different assumed scenarios for the random coefficients. This paper presents a simple approach to solving a stochastic model, based on a particular method for combining such scenario solutions into a single, feasible policy. The approach is computationally simple and easy to understand. Because of its generality, it can handle multiple competing objectives, complex stochastic constraints and may be applied in contexts other than optimization. To illustrate the present model, two distinct, important applications are considered: the optimal management of a hydro-thermal generating system and an application taken from portfolio optimization.

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