IDENTIFIABILITY OF DISTRIBUTIONS OF INDEPENDENT RANDOM VARIABLES BY LINEAR COMBINATIONS AND MOMENTS
IDENTIFIABILITY OF DISTRIBUTIONS OF INDEPENDENT RANDOM VARIABLES BY LINEAR COMBINATIONS AND MOMENTS
复制标题
独立随机变量分布的线性组合和矩的可辨识性
DOI:
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发表时间:
2000
期刊:
影响因子:
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通讯作者:
C. Rao
中科院分区:
文献类型:
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作者:
G. Székely;C. Rao
Let X 1 , X 2 , ..., X n be independent random variables. Given the moments EX j s (s=1, 2,...,m), (j=1, 2,...,n), the joint distribution function of the linear forms Y i =Σ j=1 n a ij X j , i=1, 2,...,k with an arbitrary nonvanishing joint characteristic function uniquely determines the distributions of X 1 , X 2 , ..., X n (with trivial exceptions) iff n≤( k+m m+1 ). For example four moments and four linear combinations under general conditions (specified later) determine the distribution of n=56 independent random variables, but not of 57.