#pragma once
/**
 * @file data_mapping.h
 * @brief 把数据映射到正态分布的类，现在已经弃用
 * 常用的函数包括cox-box函数等
 * @author Cat (null.null.null@qq.com)
 * @version 0.1
 * @date 2021-09-10
 *
 * Copyright: Baosight Co. Ltd.
 * DO NOT COPY/USE WITHOUT PERMISSION
 *
 */
#include <vector>
#include <mix_cc/math/log.h>
#include <dlib/statistics.h>
namespace distribution {
/**
 * @brief 数据映射，把数据映射到正态分布
 */
struct DataMapping {
 private:
  double lambda_ = 1.1;
  double c_ = 0;
  double delta_ = 0.01;
  bool is_positive_skewed_;
  dlib::running_stats<double> rs_;

 public:
  /**
   * @brief Set the running stats object
   * @param  prev_rs          My Param doc
   * @return int
   */
  int set_running_stats(dlib::running_stats<double> prev_rs);

  /**
   * @brief Get the lambda object
   * @return double 
   */
  double get_lambda();

  /**
   * @brief Get the running stats object
   * @return dlib::running_stats<double>
   */
  dlib::running_stats<double> get_running_stats();

  /**
   * @brief 反向变换单个数据
   * @param  input            My Param doc
   * @return double 
   */
  double reverse_transform(double input);

  /**
   * @brief 正向变换数据组
   * @param  input            My Param doc
   * @return std::vector<double> 
   */
  std::vector<double> transform(const std::vector<double>& input);
};
}  // namespace distribution