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Quant版 - 请教一个问题
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话题: sigma话题: mu话题: sub话题: what
进入Quant版参与讨论
1 (共1页)
w********r
发帖数: 290
1
X (n by 1) follows a multivariate normal distribution, i.e.,
X ~ N(mu, Sigma). mu is n by 1, Sigma is n by n.
What is
E(X|X_{sub}=A)?
where the index 'sub' (m by 1) is a subset of {1,2,..,n}, A is m by 1, 1 <=
m < n.
e**********m
发帖数: 1960
2
google conditional multivariate normal distribution?

=

【在 w********r 的大作中提到】
: X (n by 1) follows a multivariate normal distribution, i.e.,
: X ~ N(mu, Sigma). mu is n by 1, Sigma is n by n.
: What is
: E(X|X_{sub}=A)?
: where the index 'sub' (m by 1) is a subset of {1,2,..,n}, A is m by 1, 1 <=
: m < n.

w********r
发帖数: 290
3
谢谢啦,通过google找到reference啦!不好意思 问如此trial的问题
1 (共1页)
进入Quant版参与讨论
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问一个Shreve V2上的问题[合集] 想去读MFE,有必要选修些课了?
相关话题的讨论汇总
话题: sigma话题: mu话题: sub话题: what