normalizer.py

class Normalizer(object):
    def __init__(self, vector_length):
        _minima = np.zeros(vector_length)
        _maxima = np.zeros(vector_length)

    def update(self, vector):
        np.minimum(self._minima, vector, self._minima)
        np.maximum(self._maxima, vector, self._maxima)

    def normalize(self, vector):
        pass