inst/doc/short_intro.R

In regsem: Regularized Structural Equation Modeling

## -----------------------------------------------------------------------------
library(lavaan);library(regsem)
sim.mod <- "
f1 =~ 1*y1 + 1*y2 + 1*y3+ 1*y4 + 1*y5
f1 ~ 0*x1 + 0*x2 + 0*x3 + 0*x4 + 0*x5 + 0.2*x6 + 0.5*x7 + 0.8*x8
f1~~1*f1"
dat.sim = simulateData(sim.mod,sample.nobs=100,seed=12)

## -----------------------------------------------------------------------------
run.mod <- "
f1 =~ NA*y1 + y2 + y3+ y4 + y5
f1 ~ c1*x1 + c2*x2 + c3*x3 + c4*x4 + c5*x5 + c6*x6 + c7*x7 + c8*x8
f1~~1*f1
"
lav.out <- sem(run.mod,dat.sim,fixed.x=FALSE)
#summary(lav.out)
parameterestimates(lav.out)[6:13,] # just look at regressions

## ----message=FALSE,warning=FALSE,fig.width=5,fig.height=5---------------------
semPlot::semPaths(lav.out)

## ----results='hide'-----------------------------------------------------------
reg.out <- cv_regsem(lav.out,n.lambda=30,type="lasso",jump=0.04,
                     pars_pen=c("c1","c2","c3","c4","c5","c6","c7","c8"))

## ----eval=FALSE---------------------------------------------------------------
#  # not run
#  extractMatrices(lav.out)["A"]

## -----------------------------------------------------------------------------
summary(reg.out)

## ----fig.width=5,fig.height=5-------------------------------------------------

plot(reg.out)

## -----------------------------------------------------------------------------
head(reg.out$fits,10)

## -----------------------------------------------------------------------------
reg.out$final_pars[1:13] # don't show variances/covariances