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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:

def H5(self):
        "Inverse difference moment."
        t = 1 + toeplitz(self.levels) ** 2
        repeated = np.tile(t[np.newaxis], (self.nobjects, 1, 1))
        return (1.0 / repeated * self.P).sum(2).sum(1)