A hierarchical version of the de Finetti and Aldous-Hoover representations
A hierarchical version of the de Finetti and Aldous-Hoover representations
复制标题
de Finetti 和 Aldous-Hoover 表示的分层版本
DOI:
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发表时间:
2013
期刊:
影响因子:
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通讯作者:
D. Panchenko
中科院分区:
文献类型:
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作者:
Tim Austin;D. Panchenko
We consider random arrays indexed by the leaves of an infinitary rooted tree of finite depth, with the distribution invariant under the rearrangements that preserve the tree structure. We call such arrays hierarchically exchangeable and prove that they satisfy an analogue of de Finetti’s theorem. We also prove a more general result for arrays indexed by several trees, which includes a hierarchical version of the Aldous-Hoover representation.