code: def G(Lq):
      X = sum(phi0(e) for e in Lq)
      s = np.prod(np.sign(Lq))
      return s * phi0(X)
  
imports: import numpy
  from math import log, tanh
label_desc: Use image node_id 2 for calling a global function with example usage: G(Lq) and returns: unknown