def calculate_informedness(TPR, TNR):
    """
    Calculates the informedness/Youden's J meassure of the supplied data, using the equation as per: https://en.wikipedia.org/wiki/Youden%27s_J_statistic
        Informedness = TPR+TNR-1
            
    Input:
        TPR: True Positive Rate
        TNR: True Negative Rate

    Output:
        Informedness
    """
    
    return TPR+TNR-1