Method Shrinkage

include/LightGBM/tree.h:149–155

! * \brief Shrinkage for the tree's output * shrinkage rate (a.k.a learning rate) is used to tune the training process * \param rate The factor of shrinkage */

  * \param rate The factor of shrinkage
  */
  inline void Shrinkage(double rate) {
    #pragma omp parallel for schedule(static, 1024) if (num_leaves_ >= 2048)
    for (int i = 0; i < num_leaves_; ++i) {
      leaf_value_[i] *= rate;
    }
    shrinkage_ *= rate;
  }

  inline double shrinkage() const {
    return shrinkage_;