skip_connection("ml-feature-robust-scaler")
skip_on_livy()
skip_on_arrow_devel()
test_that("ft_robust_scaler() works properly", {
sc <- testthat_spark_connection()
test_requires_version("3.0.0", "ft_robust_scaler requires Spark 3.0.0+")
df <- data.frame(
id = 1:5,
V1 = c(0.0, 1.0, 2.0, 3.0, 4.0),
V2 = c(0.0, -1.0, -2.0, -3.0, -4.0)
)
df_tbl <- sdf_copy_to(sc, df, overwrite = TRUE)
expect_warning_on_arrow(
r_s <- df_tbl %>%
ft_vector_assembler(paste0("V", 1:2), "features") %>%
ft_robust_scaler("features", "scaled") %>%
pull(scaled)
)
expect_equal(
r_s,
list(
c(-1, 1),
c(-0.5, 0.5),
c(0, 0),
c(0.5, -0.5),
c(1, -1)
)
)
})
test_clear_cache()
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