Fig. 1
From: Research of combination forecasting model based on improved analytic hierarchy process
Hierarchical structure diagram of combined model. As a hierarchical structure diagram, it consists of three layers: target layer, index layer, and program layer. The program layer contains a variety of intelligent model types, and which model should be chosen by the actual needs of the project. The index layer contains a variety of evaluation indexes of the single model: prediction accuracy, robustness, sensitivity, and the amount of data needed to be fitted. These selected indexes can reflect the performance of the model