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我正在使用决策树算法，但出现以下错误。我有超过 500 个功能。那是问题吗？任何帮助都会很棒！

java.lang.UnknownError: no bin was found for continuous variable.
    at org.apache.spark.mllib.tree.DecisionTree$.findBin$1(DecisionTree.scala:492)
    at org.apache.spark.mllib.tree.DecisionTree$.org$apache$spark$mllib$tree$DecisionTree$$findBinsForLevel$1(DecisionTree.scala:529)
    at org.apache.spark.mllib.tree.DecisionTree$$anonfun$3.apply(DecisionTree.scala:653)
    at org.apache.spark.mllib.tree.DecisionTree$$anonfun$3.apply(DecisionTree.scala:653)
    at scala.collection.Iterator$$anon$11.next(Iterator.scala:328)
    at scala.collection.Iterator$class.foreach(Iterator.scala:727)
    at scala.collection.AbstractIterator.foreach(Iterator.scala:1157)
    at scala.collection.TraversableOnce$class.foldLeft(TraversableOnce.scala:144)
    at scala.collection.AbstractIterator.foldLeft(Iterator.scala:1157)
    at scala.collection.TraversableOnce$class.aggregate(TraversableOnce.scala:201)
    at scala.collection.AbstractIterator.aggregate(Iterator.scala:1157)
    at org.apache.spark.rdd.RDD$$anonfun$21.apply(RDD.scala:838)
    at org.apache.spark.rdd.RDD$$anonfun$21.apply(RDD.scala:838)
    at org.apache.spark.SparkContext$$anonfun$23.apply(SparkContext.scala:1116)
    at org.apache.spark.SparkContext$$anonfun$23.apply(SparkContext.scala:1116)
    at org.apache.spark.scheduler.ResultTask.runTask(ResultTask.scala:111)
    at org.apache.spark.scheduler.Task.run(Task.scala:51)
    at org.apache.spark.executor.Executor$TaskRunner.run(Executor.scala:187)
    at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
    at java.lang.Thread.run(Thread.java:744)
14/08/13 16:36:06 ERROR ExecutorUncaughtExceptionHandler: Uncaught exception in thread Thread[Executor task launch worker-0,5,main]
java.lang.UnknownError: no bin was found for continuous variable.
    at org.apache.spark.mllib.tree.DecisionTree$.findBin$1(DecisionTree.scala:492)
    at org.apache.spark.mllib.tree.DecisionTree$.org$apache$spark$mllib$tree$DecisionTree$$findBinsForLevel$1(DecisionTree.scala:529)
    at org.apache.spark.mllib.tree.DecisionTree$$anonfun$3.apply(DecisionTree.scala:653)
    at org.apache.spark.mllib.tree.DecisionTree$$anonfun$3.apply(DecisionTree.scala:653)
    at scala.collection.Iterator$$anon$11.next(Iterator.scala:328)
    at scala.collection.Iterator$class.foreach(Iterator.scala:727)
    at scala.collection.AbstractIterator.foreach(Iterator.scala:1157)
    at scala.collection.TraversableOnce$class.foldLeft(TraversableOnce.scala:144)
    at scala.collection.AbstractIterator.foldLeft(Iterator.scala:1157)
    at scala.collection.TraversableOnce$class.aggregate(TraversableOnce.scala:201)
    at scala.collection.AbstractIterator.aggregate(Iterator.scala:1157)
    at org.apache.spark.rdd.RDD$$anonfun$21.apply(RDD.scala:838)
    at org.apache.spark.rdd.RDD$$anonfun$21.apply(RDD.scala:838)
    at org.apache.spark.SparkContext$$anonfun$23.apply(SparkContext.scala:1116)
    at org.apache.spark.SparkContext$$anonfun$23.apply(SparkContext.scala:1116)
    at org.apache.spark.scheduler.ResultTask.runTask(ResultTask.scala:111)
    at org.apache.spark.scheduler.Task.run(Task.scala:51)
    at org.apache.spark.executor.Executor$TaskRunner.run(Executor.scala:187)
    at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
    at java.lang.Thread.run(Thread.java:744)
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1 回答 1

1

由于输入数据不干净，这确实发生了。几行有一列有“NaN”条目。一旦我们清理干净，一切都很好。

于 2014-08-15T05:53:05.793 回答