Model.Metric

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class Metric:
    @staticmethod
    def MSE(real, predict):
        return np.mean((real - predict) ** 2)

    @staticmethod
    def R2(real, predict):
        return r2_score(real, predict)

    @staticmethod
    def PCC(real, predict):
        return np.corrcoef(real, predict)[0][1]