skip_connection("broom-als")
skip_on_livy()
skip_on_arrow_devel()
skip_databricks_connect()
test_that("als tidiers works", {
## ---------------- Connection and data upload to Spark ----------------------
sc <- testthat_spark_connection()
test_requires_version("2.0.0")
movies <- data.frame(
user = c(1, 2, 0, 1, 2, 0),
item = c(1, 1, 1, 2, 2, 0),
rating = c(3, 1, 2, 4, 5, 4)
)
movies_tbl <- sdf_copy_to(sc,
movies,
name = "movies_tbl",
overwrite = TRUE
)
## ----------------------------- tidy() --------------------------------------
als_model <- movies_tbl %>%
ml_als(rating ~ user + item)
td1 <- tidy(als_model) %>%
collect()
check_tidy(td1,
exp.row = 3, exp.col = 3,
exp.names = c("id", "user_factors", "item_factors")
)
## --------------------------- augment() -------------------------------------
au1 <- als_model %>%
augment() %>%
collect()
check_tidy(au1,
exp.col = 4,
exp.name = c("user", "item", "rating", ".prediction")
)
## ---------------------------- glance() -------------------------------------
gl1 <- glance(als_model)
check_tidy(gl1,
exp.row = 1,
exp.names = c("rank", "cold_start_strategy")
)
})
test_clear_cache()
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