a></li><li class="depth-3 branch"><a href="propeller.problems.integer-regression.html"><div class="inner"><span class="tree"><span class="top"></span><span class="bottom"></span></span><span>integer-regression</span></div></a></li><li class="depth-3 branch"><a href="propeller.problems.simple-classification.html"><div class="inner"><span class="tree"><span class="top"></span><span class="bottom"></span></span><span>simple-classification</span></div></a></li><li class="depth-3"><div class="no-link"><div class