# Questions tagged [conditional]

This tag is ambiguous. Consider replacing it with a more specific tag such as [conditional-probability], [conditional-expectation], [conditional-random-field] or [conditional-independence].

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### Multivariate normal distribution conditioning inequalities variable [closed]

The bivariate normal distribution X is as follows. $X = (X_1, X_2)^\top \sim \mathcal{N}(\mu, \Sigma), ~ X \in \mathbb{R}^2$ I want to know the exact distribution(pdf) $P(X | X_1 > X_2)$ in which ...
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### Bridging the gap from theory to implementation in "Conditional Distance Correlation" by Wang et al. 2015?

In an attempt to implement a form of conditional distance correlation for random variables represented as vectors of observations, I came upon this paper that nicely extends the notion of distance ...
73 views

### difference between two sets of pvalues

I am performing a biological experiment, where I am trying to capture potential mediation effects from some genes. I have 150 significant results, containing 30 tissues with different sample size. For ...
1 vote
26 views

### Given a DAG X<-Z->Y, how to test for conditional independence of X and Y given Z for non-normal random variables?

Consider data generated from a directed acyclic graph (DAG) of the form X<-Z->Y. Based on d-separation of DAGs, X is independent of Y given Z: X_||_Y|Z. If X, Y and Z are multivariate normal, ...
17 views

### Reformulating latent dirichlet allocation

can you guys help me solve this equation and go from : to this one : I have tried something but my result gives me this : p(θ, φ, z| α, β) = p(θ, φ, z, w|α, β)/p(w|α, β) the equations are taken from ...
23 views

### Difference between conditional survival and left truncation analysis for cancer patients?

I am looking at cancer patient survival and want to know how long-term survival is after already having survived some time. I am more familiar with conventional conditional survival, but have recently ...