A Hybrid Genetic Programming Method in Optimization and Forecasting: A Case Study of the Broadband Penetration in OECD Countries

<table class="table-group" id="tab22"><tr><td><table class="table"><tr><td class="thead-hr" colspan="2"><hr/></td></tr><tr class="thead"><td align="center" colspan="2">Fitting performance—optimized diffusion models for OECD overall </td></tr><tr class="thead"><td align="left">Model name</td><td align="left">Model</td></tr><tr><td class="thead-hr" colspan="2"><hr/></td></tr><tr><td align="left">Logistic</td><td align="left">0.267462866067/(1+E(−(−2.58338763745+0.0419392545351*t))) </td></tr><tr><td align="left">Bass</td><td align="left">0.26746298117*(1−E(−(4.30693372098e−08+0.0419391296103)*(t−(−267.18543419))))/<br/>(1+(0.0419391296103/4.30693372098e−08)*E(−(4.30693372098e−08+0.0419391296103)<br/>*(t−(−267.18543419))))</td></tr><tr><td align="left">Gompertz with constant</td><td align="left">0.24779967624*E(−6.09503667714*E(−0.0312988127799*t))+0.0323712682778</td></tr><tr><td align="left">Gompertz</td><td align="left">0.311174465387*E(−3.43140971411*E(−0.0230181532619*t))</td></tr><tr class="table-tr"><td colspan="2"><hr class="tbody-hr"/></td></tr></table></td></tr></table>

Representation of the optimized diffusion models in fitting (OECD overall).

Advances in Operations Research

tab22

Table 22

Table 22: A Hybrid Genetic Programming Method in Optimization and Forecasting: A Case Study of the Broadband Penetration in OECD Countries 