spark-reviews mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From felixcheung <...@git.apache.org>
Subject [GitHub] spark pull request #17557: [SPARK-20208][R][DOCS] Document R fpGrowth suppor...
Date Mon, 17 Apr 2017 20:55:47 GMT
Github user felixcheung commented on a diff in the pull request:

    https://github.com/apache/spark/pull/17557#discussion_r111819780
  
    --- Diff: R/pkg/vignettes/sparkr-vignettes.Rmd ---
    @@ -906,6 +910,37 @@ predicted <- predict(model, df)
     head(predicted)
     ```
     
    +#### FP-growth
    +
    +`spark.fpGrowth` executes FP-growth algorithm to mine frequent itemsets on a `SparkDataFrame`.
`itemsCol` should be an array of values.
    +
    +```{r}
    +items <- selectExpr(createDataFrame(data.frame(items = c(
    +  "T,R,U", "T,S", "V,R", "R,U,T,V", "R,S", "V,S,U", "U,R", "S,T", "V,R", "V,U,S",
    +  "T,V,U", "R,V", "T,S", "T,S", "S,T", "S,U", "T,R", "V,R", "S,V", "T,S,U"
    +))), "split(items, ',') AS items")
    --- End diff --
    
    that's possible but I'm fairly certain there are still quite a few functions we have missed
over the year that are not in JIRA.
    
    feel free to add them - would appreciate your help. 
    
    agree `array` is a bit tricky - I'd rather not having to diverge because of consistency
with `array_contain` function and so on, but I can see `spark.array` might be an approach.
Or perhaps `array_col`?



---
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 infrastructure@apache.org or file a JIRA ticket
with INFRA.
---

---------------------------------------------------------------------
To unsubscribe, e-mail: reviews-unsubscribe@spark.apache.org
For additional commands, e-mail: reviews-help@spark.apache.org


Mime
View raw message