Github user srowen commented on a diff in the pull request:
https://github.com/apache/spark/pull/653#discussion_r12346699
--- Diff: docs/mllib-naive-bayes.md ---
@@ -58,29 +67,36 @@ optionally smoothing parameter `lambda` as input, and
output a
can be used for evaluation and prediction.
{% highlight java %}
+import org.apache.spark.api.java.JavaPairRDD;
+import org.apache.spark.api.java.JavaRDD;
+import org.apache.spark.api.java.function.Function;
import org.apache.spark.mllib.classification.NaiveBayes;
+import org.apache.spark.mllib.classification.NaiveBayesModel;
+import org.apache.spark.mllib.regression.LabeledPoint;
+import scala.Tuple2;
JavaRDD<LabeledPoint> training = ... // training set
JavaRDD<LabeledPoint> test = ... // test set
-NaiveBayesModel model = NaiveBayes.train(training.rdd(), 1.0);
+final NaiveBayesModel model = NaiveBayes.train(training.rdd(), 1.0);
-JavaRDD<Double> prediction = model.predict(test.map(new
Function<LabeledPoint, Vector>() {
--- End diff --
@mengxr Doesn't work unfortunately. You won't be able to cast `Foo<Object>`
to `Foo<String>` in Java in general and it doesn't compile for me. I feel like
I'm missing something and would like to figure it out; there may be some tweak
needed on the Scala side? But at least for here, the snippet proposed in this
PR does compile and work and isn't too different.
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