gistfile1.py

def generateTuple():
   if numpy.random.uniform() > 0.05:
      # generate from normal data set, e.g. normal distribution around some values -- here, a line
      k = 1.16
      d = 8.9
      x = numpy.random.uniform(6, 12)
      y = k * (x - 11) + d
      return numpy.random.norm(x, 1), numpy.random.norm(y, 3)
   else:
      # generate from outlier distribution, e.g. uniform distribution over full parameter space
      return numpy.random.uniform(6, 10), numpy.random.uniform(6, 10)