def METHOD_NAME(W_b_input):
    model = chain(get_model(W_b_input), Dropout(1.0))
    nr_batch, nr_out, nr_in = get_shape(W_b_input)
    W, b, input_ = W_b_input
    fwd_dropped, _ = model.begin_update(input_)
    assert all(val == 0.0 for val in fwd_dropped.flatten())