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

Figure 7

Relationship between trees in random forests and error metrics (MdAPE, MAPE, OBB, and NRMSE) for different ratios of training and testing subsets. (a) 65 : 35. (b) 70 : 30. (c) 75 : 25. (d) 80 : 20. (e) 85 : 15. (f) 90 : 10.

(a)

(b)

(c)

(d)

(e)

(f)