logit_link | R Documentation |
maxlogL
object)log_link
object provides a way to implement logit link function that
maxlogL
needs to perform estimation. See documentation for
maxlogL
for further information on parameter estimation and implementation
of link objects.
logit_link()
logit_link
is part of a family of generic functions with no input arguments that
defines and returns a list with details of the link function:
name
: a character string with the name of the link function.
g
: implementation of the link function as a generic function in R
.
g_inv
: implementation of the inverse link function as a generic function
in R
.
There is a way to add new mapping functions. The user must specify the details aforesaid.
A list with logit link function, its inverse and its name.
Jaime Mosquera GutiƩrrez, jmosquerag@unal.edu.co
maxlogL
Other link functions:
NegInv_link()
,
log_link()
#--------------------------------------------------------------------------------
# Estimation of proportion in binomial distribution with 'logit' function
# 10 trials, probability of success equals to 30%)
N <- rbinom(n = 100, size = 10, prob = 0.3)
phat <- maxlogL(x = N, dist = 'dbinom', fixed = list(size=10),
link = list(over = "prob", fun = "logit_link"))
summary(phat)
# Link function name
fun <- logit_link()$name
print(fun)
# Link function
g <- logit_link()$g
curve(g(x), from = 0, to = 1)
# Inverse link function
ginv <- logit_link()$g_inv
curve(ginv(x), from = -10, to = 10)
#--------------------------------------------------------------------------------
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