informative error for custom obj in RF (#2355)

76e57c5d · Guolin Ke · GitHub · 0dfda826 · 76e57c5d
Unverified Commit 76e57c5d authored Aug 26, 2019 by Guolin Ke Committed by GitHub Aug 26, 2019
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src/boosting/rf.hpp src/boosting/rf.hpp +1 -1

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--- a/src/boosting/rf.hpp
+++ b/src/boosting/rf.hpp
@@ -81,7 +81,7 @@ class RF : public GBDT {

  void Boosting() override {
    if (objective_function_ == nullptr) {
-      Log::Fatal("No object function provided");
+      Log::Fatal("RF mode do not support custom objective function, please use built-in objectives.");
    }
    init_scores_.resize(num_tree_per_iteration_, 0.0);
    for (int cur_tree_id = 0; cur_tree_id < num_tree_per_iteration_; ++cur_tree_id) {