Method sparse_rate

include/LightGBM/bin.h:102–102

! \brief Sparsity of this bin ( num_zero_bins / num_data ) */

  inline bool is_trivial() const { return is_trivial_; }
  /*! \brief Sparsity of this bin ( num_zero_bins / num_data ) */
  inline double sparse_rate() const { return sparse_rate_; }
  /*!
  * \brief Save binary data to file
  * \param file File want to write