机构地区: 北京航空航天大学
出 处: 《吉林大学自然科学学报》 1996年第4期8-12,共5页
摘 要: 讨论了一类加权损失函数下方差未知时,通常估计的非容许性问题,给出了改进估计.所得结论较已有结果更为一般化. The inadmisslbility of the usual estimation of the mean of a normal distribution under a class of weighted loss function with unknown variance is discussed,and the improved estimation is drawn. The results in this paper are more generalized and available.