Github user mengxr commented on a diff in the pull request:
https://github.com/apache/spark/pull/14384#discussion_r75181798
--- Diff: R/pkg/inst/tests/testthat/test_mllib.R ---
@@ -454,4 +454,61 @@ test_that("spark.survreg", {
}
})
+test_that("spark.als", {
+ # R code to reproduce the result.
+ #
+ #' data <- list(list(0, 0, 4.0), list(0, 1, 2.0), list(1, 1, 3.0),
list(1, 2, 4.0),
+ #' list(2, 1, 1.0), list(2, 2, 5.0))
+ #' df <- createDataFrame(data, c("user", "item", "rating"))
+ #' model <- spark.als(df, ratingCol = "rating", userCol = "user",
itemCol = "item",
+ #' rank = 10, maxIter = 5, seed = 0)
+ #' test <- createDataFrame(list(list(0, 2), list(1, 0), list(2, 0)),
c("user", "item"))
+ #' predict(model, test)
+ #
+ # -- output of 'predict(model, data)'
+ #
+ # user item prediction
+ # 0 2 -0.1380762
+ # 1 0 2.6258414
+ # 2 0 -1.5018409
--- End diff --
It is not helpful if the code to produce the expect answer is the same as
the test code. We can either use Scala code or simply remove this block of
comments.
---
If your project is set up for it, you can reply to this email and have your
reply appear on GitHub as well. If your project does not have this feature
enabled and wishes so, or if the feature is enabled but not working, please
contact infrastructure at infrastruct...@apache.org or file a JIRA ticket
with INFRA.
---
---------------------------------------------------------------------
To unsubscribe, e-mail: reviews-unsubscr...@spark.apache.org
For additional commands, e-mail: reviews-h...@spark.apache.org
