The Ewens sampling formula is a distribution related to the random partition of a positive integer. In this study, we investigate the issue of non-existence solutions in parameter estimation under the distribution. As a result, the first and second moments matching estimators to the uniformly minimum variance unbiased estimator are derived using the Ewens sampling formula in asymptotic sense. A Monte Carlo simulation study is performed to evaluate the efficiency of the resulting estimators.

翻译：Ewens 抽样公式是同正整数随机分布有关的分布。 在本研究中,我们调查了在分布下参数估计中的不存在解决方案问题。结果,将估计值与统一的最低差异不偏差估计值相匹配的第一和第二个时刻是使用Ewens 抽样公式在无药可救意义上得出。进行了蒙特卡洛模拟研究,以评价由此得出的估计值的效率。