Github user jkbradley commented on a diff in the pull request: https://github.com/apache/spark/pull/16434#discussion_r94867603 --- Diff: mllib/src/test/scala/org/apache/spark/ml/feature/ChiSqSelectorSuite.scala --- @@ -35,22 +35,63 @@ class ChiSqSelectorSuite extends SparkFunSuite with MLlibTestSparkContext // Toy dataset, including the top feature for a chi-squared test. // These data are chosen such that each feature's test has a distinct p-value. - /* To verify the results with R, run: - library(stats) - x1 <- c(8.0, 0.0, 0.0, 7.0, 8.0) - x2 <- c(7.0, 9.0, 9.0, 9.0, 7.0) - x3 <- c(0.0, 6.0, 8.0, 5.0, 3.0) - y <- c(0.0, 1.0, 1.0, 2.0, 2.0) - chisq.test(x1,y) - chisq.test(x2,y) - chisq.test(x3,y) + /* + * Contingency tables --- End diff -- It's kind of nice seeing these tables, but for validation, it's much easier for users to check using R. Could you please include a section for verifying the results with R, like there was before?
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