/span>, <span class="pkg">MASS</span>, <span class="pkg">SuperLearner</span>, <span class="pkg">R6</span> and <span class="pkg">tidyr</span> packages. The code was taken directly from the <span class="pkg">MOSS</span> package, which is currently not available on CRAN. Tiny changes were made but it's essentially the same. You do not have to install it but it can be installed using the following code:<br><code>devtools::install_github("wilsoncai1992/MOSS")</code>. <br> If you use this method, please cite the 