“…The generation of mathematical function by means of symbolic regression has been widely studied in the GP field, as shown by the following papers by Keijzer (2003), Streeter and Becker (2001), Iba and Nikolaev (2001), Parasuraman et al (2007), Miller and Harding (2008), Baumes et al (2009), Barmpalexis et al (2011), among others. It seems that the representation of surface plays an important role in a variety of disciplines including aided-design, computer vision, graphic computation and geographical signal and image processing.…”