View source: R/image.hglasso.R
image.hglasso | R Documentation |
hglasso
, hcov
, or hbn
This function plots a hglasso or hcov — the estimated matrix V and Z from hglasso
, hcov
, or hbn
## S3 method for class 'hglasso' image(x, ...)
x |
an object of class hglasso, hcov, or hbn. |
... |
additional parameters to be passed to |
The estimated inverse covariance matrix from hglasso
, covariance matrix from hcov
, and estimated binary network hbn
can be decomposed as Z + V + t(V), where V is a matrix that contains hub nodes. This function creates image plots of Z and V.
Kean Ming Tan
Tan et al. (2014). Learning graphical models with hubs. To appear in Journal of Machine Learning Research. arXiv.org/pdf/1402.7349.pdf.
plot.hglasso
summary.hglasso
hglasso
hcov
hbn
############################################## # Example from Figure 1 in the manuscript # A toy example to illustrate the results from # Hub Graphical Lasso ############################################## library(mvtnorm) set.seed(1) n=100 p=100 # A network with 4 hubs Theta<-HubNetwork(p,0.99,4,0.1)$Theta # Generate data matrix x x <- rmvnorm(n,rep(0,p),solve(Theta)) x <- scale(x) # Run Hub Graphical Lasso to estimate the inverse covariance matrix res1 <- hglasso(cov(x),0.3,0.2,2) # image plots for the matrix V and Z image(res1) dev.off()
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