calculate_EPSR_mu {BUScorrect}R Documentation

Calculate the estimated potential scale reduction factors (EPSR factors) for subtype effects

Description

When Gibbs sampler attains stationary, the distances between multiple chains (with multiple initial values) should be small. The EPSR factors are calculated to help decide the iteration number of Gibbs sampler.

Usage

calculate_EPSR_mu(mu_PosterSamp_chain1, mu_PosterSamp_chain2)

Arguments

mu_PosterSamp_chain1

posterior samples of subtype effects from chain 1.

mu_PosterSamp_chain2

posterior samples of subtype effects from chain 1.

Value

EPSR_gamma

The EPSR factors for mu, a G by K matrix. Note that EPSR_mu[,1] is a NA vector. mu[,1] are fixed at zero, so their EPSR factors are not taken into account.

Author(s)

Xiangyu Luo

Examples

#10 genes, 2 subtypes, 100 posterior samples per parameter
chain1 <- 1+array(rnorm(10*2*100,sd=0.05), dim=c(10,2,100))
chain2 <- 1+array(rnorm(10*2*100,sd=0.05), dim=c(10,2,100))
calculate_EPSR_mu(chain1,chain2)

[Package BUScorrect version 1.2.1 Index]