Last updated: 2020-01-14

Checks: 7 0

Knit directory: pcarbo/analysis/

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Note that any generated files, e.g. HTML, png, CSS, etc., are not included in this status report because it is ok for generated content to have uncommitted changes.


These are the previous versions of the R Markdown and HTML files. If you’ve configured a remote Git repository (see ?wflow_git_remote), click on the hyperlinks in the table below to view them.

File Version Author Date Message
Rmd 88668a4 Peter Carbonetto 2020-01-14 wflow_publish(“susie_jrssb_example.Rmd”)
html f73d1cb Peter Carbonetto 2020-01-14 First build of the susie example.
Rmd fd08150 Peter Carbonetto 2020-01-14 wflow_publish(“susie_jrssb_example.Rmd”)
Rmd 781b68e Peter Carbonetto 2020-01-14 Added/modified workflowr files.
Rmd 43ad1c3 Peter Carbonetto 2020-01-14 Added workflowr files.

Add text here.

Load packages

The mvtnorm package is used to simulate the data.

library(mvtnorm)
library(varbvs)
library(susieR)

Simulate data

One of the referees was interested in understanding the behaviour of SuSiE in the following scenario.

There are 5 predictors, and they are all somewhat correlated with each other. The first two predictors are very correlated with each other, and the third and fourth predictors are also very strongly correlated. The fifth predictor is also more correlated with the others; the weakest correlates are between \((x1,x2)\) and $(x3,x4).

set.seed(1)
n <- 100
b <- c(1.1,0,-0.75,0,0)
S <- rbind(c(   1, 0.99,  0.5,  0.5, 0.8),
           c(0.99,    1,  0.5,  0.5, 0.8),
           c( 0.5,  0.5,    1, 0.99, 0.8),
           c( 0.5,  0.5, 0.99,    1, 0.8),
           c( 0.8,  0.8,  0.8,  0.8,   1))
X <- rmvnorm(n,sigma = S)
y <- c(X %*% b + 3*rnorm(n))

Single-variable regression analysis

Add text here.

for (i in 1:5) {
  dat        <- data.frame(cbind(X[,i],y))
  names(dat) <- c("x","y")
  cat(sprintf("x%d: %0.2e\n",i,
              summary(lm(y ~ x,dat))$coefficients["x","Pr(>|t|)"]))
}
# x1: 1.29e-01
# x2: 7.35e-02
# x3: 6.17e-02
# x4: 8.29e-02
# x5: 8.71e-01

sessionInfo()
# R version 3.6.2 (2019-12-12)
# Platform: x86_64-apple-darwin15.6.0 (64-bit)
# Running under: macOS Catalina 10.15.2
# 
# Matrix products: default
# BLAS:   /Library/Frameworks/R.framework/Versions/3.6/Resources/lib/libRblas.0.dylib
# LAPACK: /Library/Frameworks/R.framework/Versions/3.6/Resources/lib/libRlapack.dylib
# 
# locale:
# [1] en_US.UTF-8/en_US.UTF-8/en_US.UTF-8/C/en_US.UTF-8/en_US.UTF-8
# 
# attached base packages:
# [1] stats     graphics  grDevices utils     datasets  methods   base     
# 
# other attached packages:
# [1] susieR_0.8.1.0564 varbvs_2.6-5      mvtnorm_1.0-11   
# 
# loaded via a namespace (and not attached):
#  [1] Rcpp_1.0.3          knitr_1.26          whisker_0.4        
#  [4] magrittr_1.5        workflowr_1.6.0     lattice_0.20-38    
#  [7] R6_2.4.1            jpeg_0.1-8.1        rlang_0.4.2        
# [10] nor1mix_1.3-0       stringr_1.4.0       tools_3.6.2        
# [13] grid_3.6.2          xfun_0.11           png_0.1-7          
# [16] latticeExtra_0.6-29 git2r_0.26.1        htmltools_0.4.0    
# [19] yaml_2.2.0          digest_0.6.23       rprojroot_1.3-2    
# [22] Matrix_1.2-18       RColorBrewer_1.1-2  later_1.0.0        
# [25] promises_1.1.0      fs_1.3.1            glue_1.3.1         
# [28] evaluate_0.14       rmarkdown_2.0       stringi_1.4.3      
# [31] compiler_3.6.2      backports_1.1.5     httpuv_1.5.2