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

<table class="table-group" id="tab28"><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 Denmark  </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">0.386701712691/(1+E(−(−2.76922996844+0.058481412812*t))) </td></tr><tr><td align="left">Bass</td><td align="left">0.386701824675*(1−E(−(7.48033939618e−08+0.0584811962598)*(t−(−184.676718196))))<br/>/(1+(0.0584811962598/7.48033939618e−08)*E(−(7.48033939618e−08+0.0584811962598)<br/>*(t−(−184.676718196))))</td></tr><tr><td align="left">Gompertz with constant</td><td align="left">0.364158594712*E(−6.08132991138*E(−0.042851861025*t))+0.0339245270247</td></tr><tr><td align="left">Gompertz</td><td align="left">0.411115617425*E(−3.86441490696*E(−0.0356437099203*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 (Denmark).

Advances in Operations Research

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Table 28

Table 28: A Hybrid Genetic Programming Method in Optimization and Forecasting: A Case Study of the Broadband Penetration in OECD Countries 