Method Refit

src/c_api.cpp:230–239

  }

  void Refit(const int32_t* leaf_preds, int32_t nrow, int32_t ncol) {
    std::lock_guard<std::mutex> lock(mutex_);
    std::vector<std::vector<int32_t>> v_leaf_preds(nrow, std::vector<int32_t>(ncol, 0));
    for (int i = 0; i < nrow; ++i) {
      for (int j = 0; j < ncol; ++j) {
        v_leaf_preds[i][j] = leaf_preds[i * ncol + j];
      }
    }
    boosting_->RefitTree(v_leaf_preds);
  }

  bool TrainOneIter(const score_t* gradients, const score_t* hessians) {
    std::lock_guard<std::mutex> lock(mutex_);