in sagemaker/source/dataset/dataset_generator.py [0:0]
def threshold(stats):
sensor_series = iter(SensorSeries(stats))
samples = []
for t in range(100):
voltage, current, resistance = next(sensor_series)
samples.append(abs(voltage - current * resistance))
samples = np.array(samples)
threshold = samples.mean() + 2 * samples.std()
return threshold