myequation.py 文件源码

def Entropy(vector_class):
  m = np.sum(vector_class)
  if m <= 0.1:return 0.0

  vec = 1.0/m*np.array(vector_class)
#  print vec
  try:
    e = -1.0 * np.dot(vec, np.nan_to_num(np.log2(vec)))
  except RuntimeWarning:
    pass
  return e

#2?