<div dir="ltr">We don't usually do any postprocessing for class weight (although there is an open issue:).<div><br></div><div><span style="font-size:12.8px;text-align:left;background-color:rgb(255,255,255);text-decoration-style:initial;text-decoration-color:initial;float:none;display:inline">In the second taxonomy, I'd say Data Pre-processing ("<span style="text-decoration-style:initial;text-decoration-color:initial;float:none;display:inline">weighting the data space"), but maybe there are exceptions in some estimators.</span></span><br></div><div><span style="font-size:12.8px;text-align:left;background-color:rgb(255,255,255);text-decoration-style:initial;text-decoration-color:initial;float:none;display:inline"><span style="text-decoration-style:initial;text-decoration-color:initial;float:none;display:inline"><br></span></span></div><div><span style="font-size:12.8px;text-align:left;background-color:rgb(255,255,255);text-decoration-style:initial;text-decoration-color:initial;float:none;display:inline"><span style="text-decoration-style:initial;text-decoration-color:initial;float:none;display:inline">The classification in the first taxonomy is correct, IMO.</span></span></div><div><span style="font-size:12.8px;text-align:left;background-color:rgb(255,255,255);text-decoration-style:initial;text-decoration-color:initial;float:none;display:inline"><span style="text-decoration-style:initial;text-decoration-color:initial;float:none;display:inline"><br></span></span></div><div><span style="font-size:12.8px;text-align:left;background-color:rgb(255,255,255);text-decoration-style:initial;text-decoration-color:initial;float:none;display:inline"><span style="text-decoration-style:initial;text-decoration-color:initial;float:none;display:inline">In the third, perhaps "Algorithm-level"</span></span></div>​</div>