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[SPARK-32428] [EXAMPLES] Make BinaryClassificationMetricsExample cons… #29222

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[SPARK-32428] [EXAMPLES] Make BinaryClassificationMetricsExample cons… #29222

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[SPARK-32428] [EXAMPLES] Make BinaryClassificationMetricsExample cons…
titsuki Jul 24, 2020
77a00dd
Replace foreach with collect.foreach in scala examples
titsuki Jul 25, 2020
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8 changes: 4 additions & 4 deletions ...s/src/main/scala/org/apache/spark/examples/mllib/BinaryClassificationMetricsExample.scala
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Expand Up @@ -59,13 +59,13 @@ object BinaryClassificationMetricsExample {

// Precision by threshold
val precision = metrics.precisionByThreshold
precision.foreach { case (t, p) =>
precision.collect.foreach { case (t, p) =>
println(s"Threshold: $t, Precision: $p")
}

// Recall by threshold
val recall = metrics.recallByThreshold
recall.foreach { case (t, r) =>
recall.collect.foreach { case (t, r) =>
println(s"Threshold: $t, Recall: $r")
}

Expand All @@ -74,13 +74,13 @@ object BinaryClassificationMetricsExample {

// F-measure
val f1Score = metrics.fMeasureByThreshold
f1Score.foreach { case (t, f) =>
f1Score.collect.foreach { case (t, f) =>
println(s"Threshold: $t, F-score: $f, Beta = 1")
}

val beta = 0.5
val fScore = metrics.fMeasureByThreshold(beta)
f1Score.foreach { case (t, f) =>
fScore.collect.foreach { case (t, f) =>
println(s"Threshold: $t, F-score: $f, Beta = 0.5")
}

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