def batch_tensor(self, name):
if name in self.transition_tensors:<EOL><INDENT>return tensor_util.merge_first_two_dims(self.transition_tensors[name])<EOL><DEDENT>else:<EOL><INDENT>return self.rollout_tensors[name]<EOL><DEDENT>
A buffer of a given value in a 'flat' (minibatch-indexed) format