Research Article
A Hybrid Genetic Programming Method in Optimization and Forecasting: A Case Study of the Broadband Penetration in OECD Countries
Table 23
Representation of the first five produced hGP models in fitting (Sweden).
| Fitting performance—hGP models for Sweden | Model name | Model |
| hGP Model 1 | 0.316195914503/(1+E(−((−24.3613307631+((0.248179188862*t))−((+2856.86270612 −0.73365067168*(−7632.23570515−264.609582528*t))*((−188.226187141*(1/(1+E(− (−11.2194594526−0.0269181697779*t))))))))))) | hGP Model 2 | 0.635230289913/(1+E(−((−859.98155469−13.6682736089*t))/(1+E(−(−0.246865293706 −0.112785107324*t))+(−645.208699231864.791617138+15.8723835928*t)))) | hGP Model 3 | 0.322283774013/(1+E(−(0.0238625468755+0.297883008597*(12.8929141638 −(−134.989713256+2.79343973525*(98.6539018027−0.344395312981*t))/(1+E (−(5.312543151582.46101246618−0.118615909978*t))+5.93885038216))))) | hGP Model 4 | 0.317301851063/(1+(E(−(−4.86018930519−1.40562027222+2.17969243374*E (−(−225.362926623/(1+E(5.79151748628−0.00873094773031*t)))))))) | hGP Model 5 | 0.317329645302*(1/(1+E((−(−6.28781400917+0.520317506477*(E(−((−22.2379905754 −21.8755007663−(−42.6520973363/(1+E(−(3.89062429403+0.258885588424 −0.00909501063577*t))))))))))))) |
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