Formalized Approaches to the Study of the Accuracy of Economic Systems Models

In the article, we propose an approach to the creation of a method of optimal complexity through examples of economic and mathematical models that are most common at micro - and macro-levels. This method minimizes the total error for given duration of solving information and calculation tasks in the model studies of organizational-economic systems. In addition, this approach allows us to substantiate the requirements for the accuracy of input information. It is shown that to ensure the sustainable level of simulation accuracy, the authority (a model customer) needs to consider real relations of the accuracy of initial information, the structural accuracy of the model, the functional model accuracy and the accuracy of numerical algorithms.