/time_series_split.html" class="external-link">time_series_split</a></span><span class="op">(</span></span></span>
<span class="r-in"><span>   <span class="va">data</span></span></span>
<span class="r-in"><span>  , <span class="va">date_col</span></span></span>
<span class="r-in"><span>  , assess <span class="op">=</span> <span class="fl">12</span></span></span>
<span class="r-in"><span>  , skip <span class="op">=</span> <span class="fl">3</span></span></span>
<span class="r-in"><span>  , cumulative <span c