Presentation in EMOOCs 2019 International Conference (https://emoocs2019.eu/) by Professor Oriol Borrás Gené from Universidad Rey Juan Carlos (Spain) and LITE group. You can read the paper here: https://link.springer.com/chapter/10.1007/978-3-030-19875-6_14 This work was supported by research grants iProg of MINECO (ref. TIN2015-66731-C2-1-R) and e-Madrid-CM of CAM (ref. P2018/TCS-4307). Thanks to LITE group and URJC online for their help in preparing the contents of MOOC.