def scale_to_sum1(relative_weights):
    """Scale a numeric column such that values are not negative and the total
    sums to 1

    args:
        relative_weights (np.NdArray): the numeric weights we will normalize

    returns:
        np.NdArray: the rescaled array values

    raises:
        None

    """
    return abs(relative_weights / sum(abs(relative_weights)))
