A de Bruijn identity for discrete random variables
A de Bruijn identity for discrete random variables
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离散随机变量的 de Bruijn 恒等式
DOI:
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发表时间:
2017
期刊:
影响因子:
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通讯作者:
S. Guha
中科院分区:
文献类型:
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作者:
O. Johnson;S. Guha
We discuss properties of the “beamsplitter addition” operation, which provides a non-standard scaled convolution of random variables supported on the non-negative integers. We give a simple expression for the action of beamsplitter addition using generating functions. We use this to give a self-contained and purely classical proof of a heat equation and de Bruijn identity, satisfied when one of the variables is geometric.