docstr: Dumps dataset statistics to pickle file.
docstr_tok: ["Dumps","dataset","statistics","to","pickle","file","."]
code: def save_data_stats(self, path_data_stats):
      """
      Dumps dataset statistics to pickle file.
      """
  
      data_stats = {
          "Xmn": self.Xmn,
          "sv1": self.sv1,
          "Xsd": self.Xsd,
          "ymn": self.ymn,
          "ysd": self.ysd,
          "ix_statistics": self.ix_statistics,
      }
      pickle.dump(data_stats, open(path_data_stats, "wb"))
  
imports: import os
  import pickle
  import sys
  import time
  import numpy
  import scipy.sparse
  from sklearn.datasets import load_svmlight_file
  import torch
  from torch.utils.data import DataLoader, Dataset
  from torch.utils.data.dataloader import _SingleProcessDataLoaderIter, _MultiProcessingDataLoaderIter, _utils
  from .None import constants
  from .None import syssettings
label_desc: Use image node_id 6 for calling the PrepareData obj's underlying member method code with example usage: obj.save_data_stats(path_data_stats) without return types