class_docstr: Analysis the auto-correlation of features
class_docstr_tok: ["Analysis","the","auto-correlation","of","features"]
code: def calc_stat_values(self):
      self._fea_corr = pred_autocorr_all(
          self._dataset.to_dict("series")
      )
      df = pd.DataFrame(self._fea_corr)
      ymin, ymax = df.min().min(), df.max().max()
      self.ylim = (
          ymin - 0.05 * (ymax - ymin),
          ymax + 0.05 * (ymax - ymin),
      )
  
imports: import pandas
  import numpy
  from qlib.contrib.report.data.base import FeaAnalyser
  from qlib.contrib.report.utils import sub_fig_generator
  from qlib.utils.paral import datetime_groupby_apply
  from qlib.contrib.eva.alpha import pred_autocorr_all
  from loguru import logger
  import seaborn
label_desc: Use image node_id 1 for calling the FeaACAna obj's underlying member method code with example usage: obj.calc_stat_values() without return types