def model_keys(self, meta):
        raise NotImplementedError()
Take the geometric mean over all dropout masks of an
dataset/ETHPy150Open lsbardel/python-stdnet/stdnet/backends/__init__.py/BackendDataServer.model_keys--crossover with--dataset/ETHPy150Open lisa-lab/pylearn2/pylearn2/models/mlp.py/geometric_mean_prediction