Complexity / 2019 / Article / Fig 6

Research Article

Public Procurement Announcements in Spain: Regulations, Data Analysis, and Award Price Estimator Using Machine Learning

Figure 6

Relationship between trees in random forests (number of estimators) and error metrics (MdAPE, MAPE, OBB, and NRMSE) for two functions to measure the quality of a split. (a) The quality function is mean squared error (MSE). (b) The quality function is mean absolute error (MAE).