def rmse(a, b):
    """Returns the root mean square error betwwen a and b
    """
    return np.sqrt(np.square(a - b).mean())
def rmse(a, b):
    """Returns the root mean square error betwwen a and b
    """
    return np.sqrt(np.square(a - b).mean())
def rmse ( a , b ) : return np . sqrt ( np . square ( a - b ) . mean ( ) )
Returns the root mean square error betwwen a and b
Returns the root mean square error betwwen a and b