code: def gaussian_convolution(h, Xi, x):
      """Calculates the Gaussian Convolution Kernel"""
      return (1.0 / np.sqrt(4 * np.pi)) * np.exp(
          -((Xi - x) ** 2) / (h**2 * 4.0)
      )
  
file_path: statsmodels/statsmodels/nonparametric/kernels.py
imports: import numpy
  from scipy.special import erf
label_desc: Use image node_id 5 for calling a global function with example usage: gaussian_convolution(h, Xi, x) and returns: unknown