Research Article
A Hybrid Genetic Programming Method in Optimization and Forecasting: A Case Study of the Broadband Penetration in OECD Countries
Table 31
Representation of the first five produced hGP models in forecasting (Sweden).
| Forecasting performance—hGP models for Sweden | Model name | Model |
| hGP Model 1 | 7.20927380763/(1+E(−(−43.9996049107*E(+2.70293611052−(−(+2.803498099 −8.15837562235*E(−1.70915730227*E(−1.74720440508−(−(−1.20189076128 −0.464224975147*E(−1.02239739844−(−(E(+0.0141394755816*t))*E(−5.74593580027*E (−0.254782583675*t)))))))))))))) | hGP Model 2 | 0.310010281135*E(−8.27016729973*E(−1.60830108009*E(−0.00327207897458−(−(E (−0.119609366795*t))*−0.614180508706−10774.1877418*E(−4.50941741619*E((E (−0.00432500059282*t)))))))) | hGP Model 3 | 0.309720977447*E(−3.32613006656*E(−1828787.41004*E(−21.0309802655*E (−0.00529622245859*t))−(−(−0.380077801407*0.0270286551485*t))*(E(E(E (−251239.306145*E(−13.3031814351*E(−0.00387849535444*t)))))))) | hGP Model 4 | 0.309960585568*E(−9.58732389121*E(−1.6194568498*E(+0.0756117709535−( −(E(−0.118396422714*t))*−0.553628776298−22454.3177439*E(−4.79688961086*E((E( −0.00396787850031*t))−3.14178858275e−05)))))) | hGP Model 5 | 0.309820654157*E(−14.6146178732*E(−1.72422423849*E(+0.218999757571−(−(E (−0.116856333856*t))*−0.430780829643−509200.484595*E(−5.9633868508*E((E (−0.00290035446778*t)))))))) |
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