Efficient Calculation of the Permutation Distribution of Trimmed Means
研究了配对设计中修整均值的置换分布，提出多项式时间算法解决指数时间问题，并利用特征函数计算渐近分布，对处理异常值和分布假设有重要价值。
Abstract The permutation distribution of the trimmed mean in matched-pairs designs is studied. This statistic is important since it is robust to both outliers and distributional assumptions. A polynomial-time algorithm for this inherently exponential-time problem is presented. The characteristic function of the distribution provides both the basis for the algorithm and a vehicle for calculating the asymptotic permutation distribution.