ABSTRACT
Once a mathematical model has been formulated for a given problem, the next stage of the decision-making process (as of Figure 2.1, Chapter 2) is to solve the model. In solving a model, one has to either select an appropriate solution approach from existing methodologies or develop a new approach. In some situations, the available solution approach or software package influences the development of a particular class of model. Otherwise, the model cannot be solved. A mathematical model usually dictates what data are needed for solving that model and its implementation. However, the data may not be available in the right form as required by the model. It is usually necessary to either prepare the data as required by the model or modify (reformulate) the model because of unavailability of data. Sometimes, the preprocessing of some data may simplify the mathematical model to be developed.
