Description Usage Arguments Value Examples
coef
method for a class "EMSS".
1 2 |
object |
an object of class "EMSS" made by the function |
only |
a character value for choosing specific variable's coefficients. Initial value is |
... |
not used, but exists because of the compatibility. |
a numeric vector or a list, containing one set or two sets, is given.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 | # examples continued from EMSS
data(Smoke, package = "EMSS")
ex1 <- EMSS(response = cigs_intervals ~ educ,
selection = smoker ~ educ + age,
data = Smoke)
coef(ex1)
data(Smoke, package = "EMSS")
ex2 <- EMSS(response = cigs_intervals ~ educ,
selection = smoker ~ educ + age,
data = Smoke, method="ECMnr")
coef(ex2)
## example using random numbers with exclusion restriction
N <- 1000
errps <- mvtnorm::rmvnorm(N,c(0,0),matrix(c(1,0.5,0.5,1),2,2) )
xs <- runif(N)
ys <- xs+errps[,1]>0
xo <- runif(N)
yo <- (xo+errps[,2])*(ys>0)
ex3 <- EMSS(response = yo ~ xo,
selection = ys ~ xs,
initial.param = c(rep(0,4), 0.3, 0.6), method="ECMnr")
coef(ex3)
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