A Grey Seasonal Index Model for Forecasting Groundwater Depth of Ningxia Plain

<table class="table-group" id="tab8"><tr><td><table class="table"><tr><td class="thead-hr" colspan="2"><hr/></td></tr><tr class="thead"><td class="align_left">Model</td><td class="align_center">MAPE</td></tr><tr><td class="thead-hr" colspan="2"><hr/></td></tr><tr><td class="align_left">Holt–Winters</td><td class="align_center">5</td></tr><tr><td class="align_left">DGGM (1,1)</td><td class="align_center">3.94</td></tr><tr><td class="align_left">GSIM (1,1)</td><td class="align_center">2.08</td></tr><tr class="table-tr"><td colspan="2"><hr class="tbody-hr"/></td></tr></table></td></tr></table>

<div>The fitting error comparison of three models.</div>

Discrete Dynamics in Nature and Society

tab8

Table 8

Table 8: A Grey Seasonal Index Model for Forecasting Groundwater Depth of Ningxia Plain 