The "Fisher" method is a mathematical method which divides the sequence sample into most excellent segments. The method is characterized by objectivity and optimum. In this paper the author applies the method to divide the earthquake activity periods. Concrete divided examples are given. Finally some questions related to applying the method are discussed.
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洪时中.最优分割在地震分期中的应用[J].地震工程学报,1984,6(1):49-57. Hong Shi-zhong. THE APPLICATION OF THE “FISHER” METHOD TO DIVIDING EARTHQUAKE ACTIVITY PERIODS[J]. China Earthquake Engineering Journal,1984,6(1):49-57.