Nothing
context("mlbeta")
## Data generation.
set.seed(313)
small_data <- runif(100)
tiny_data <- rbeta(10, 2, 7)
## Checks if the ML is correct.
mle1 <- nlm(function(p) {
-mean(dbeta(small_data, p[1], p[2], log = TRUE))
}, p = c(1, 1))$estimate
mle2 <- nlm(function(p) {
-mean(dbeta(tiny_data, p[1], p[2], log = TRUE))
}, p = c(1, 1))$estimate
expect_equal(mle1, as.numeric(mlbeta(small_data)), tolerance = 1e-5)
expect_equal(mle2, as.numeric(mlbeta(tiny_data)), tolerance = 1e-5)
## Checks the control parameters.
expect_equal(coef(mlbeta(tiny_data, type = "gradient")),
coef(mlbeta(tiny_data)),
tolerance = 1e-5
)
expect_equal(coef(mlbeta(small_data, type = "gradient")),
coef(mlbeta(small_data, type = "hessian")),
tolerance = 1e-5
)
## Finds errors with na and data out of bounds.
expect_error(mlbeta(c(0, tiny_data)))
expect_error(mlbeta(c(tiny_data, 1)))
expect_error(mlbeta(c(tiny_data, NA)))
## Checks that na.rm works as intended.
expect_equal(
coef(mlbeta(small_data)),
coef(mlbeta(c(small_data, NA), na.rm = TRUE))
)
## Is the log-likelihood correct?
est <- mlbeta(small_data, na.rm = TRUE)
expect_equal(
sum(dbeta(small_data, est[1], est[2], log = TRUE)),
attr(est, "logLik")
)
## Check class.
expect_equal(attr(est, "model"), "Beta")
expect_equal(class(est), "univariateML")
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