REPRESENTATIONS FOR PARTIALLY EXCHANGEABLE ARRAYS OF RANDOM-VARIABLES
REPRESENTATIONS FOR PARTIALLY EXCHANGEABLE ARRAYS OF RANDOM-VARIABLES
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DOI:
10.1016/0047-259x(81)90099-3
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发表时间:
1981-01-01
影响因子:
1.6
通讯作者:
ALDOUS, DJ
中科院分区:
文献类型:
--
作者:
ALDOUS, DJ
Consider an array of random variables (Xi,j), 1 ≤i,j< ∞, such that permutations of rows or of columns do not alter the distribution of the array. We show that such an array may be represented as functionsf(α,ξi,ηj,λi,j) of underlying i.i.d, random variables. This result may be useful in characterizing arrays with additional structure. For example, we characterize random matrices whose distribution is invariant under orthogonal rotation, confirming a conjecture of Dawid.