make lossguide score similar to lightGBM
@@ -503,6 +503,7 @@ void NCatboostOptions::TCatBoostOptions::SetNotSpecifiedOptionsToDefaults() {
if (ObliviousTreeOptions->GrowingPolicy == EGrowingPolicy::Lossguide) {
ObliviousTreeOptions->MaxDepth.SetDefault(16);
+ ObliviousTreeOptions->ScoreFunction.SetDefault(EScoreFunction::NewtonL2);
}
if (ObliviousTreeOptions->MaxLeavesCount.IsDefault() && ObliviousTreeOptions->GrowingPolicy != EGrowingPolicy::Lossguide) {
const ui32 maxLeaves = 1u << ObliviousTreeOptions->MaxDepth.Get();
