class SimpleWeightedEnsemble(object):
    def __init__(self):
        super(SimpleWeightedEnsemble, self).__init__()


class XGBoostEnsemble(object):
    def __init__(self):
        super(XGBoostEnsemble, self).__init__()


class MLPEnsemble(object):
    def __init__(self):
        super(MLPEnsemble, self).__init__()
