Packages

  • package root
    Definition Classes
    root
  • package org
    Definition Classes
    root
  • package apache
    Definition Classes
    org
  • package spark

    Core Spark functionality.

    Core Spark functionality. org.apache.spark.SparkContext serves as the main entry point to Spark, while org.apache.spark.rdd.RDD is the data type representing a distributed collection, and provides most parallel operations.

    In addition, org.apache.spark.rdd.PairRDDFunctions contains operations available only on RDDs of key-value pairs, such as groupByKey and join; org.apache.spark.rdd.DoubleRDDFunctions contains operations available only on RDDs of Doubles; and org.apache.spark.rdd.SequenceFileRDDFunctions contains operations available on RDDs that can be saved as SequenceFiles. These operations are automatically available on any RDD of the right type (e.g. RDD[(Int, Int)] through implicit conversions.

    Java programmers should reference the org.apache.spark.api.java package for Spark programming APIs in Java.

    Classes and methods marked with Experimental are user-facing features which have not been officially adopted by the Spark project. These are subject to change or removal in minor releases.

    Classes and methods marked with Developer API are intended for advanced users want to extend Spark through lower level interfaces. These are subject to changes or removal in minor releases.

    Definition Classes
    apache
  • package mllib

    RDD-based machine learning APIs (in maintenance mode).

    RDD-based machine learning APIs (in maintenance mode).

    The spark.mllib package is in maintenance mode as of the Spark 2.0.0 release to encourage migration to the DataFrame-based APIs under the org.apache.spark.ml package. While in maintenance mode,

    • no new features in the RDD-based spark.mllib package will be accepted, unless they block implementing new features in the DataFrame-based spark.ml package;
    • bug fixes in the RDD-based APIs will still be accepted.

    The developers will continue adding more features to the DataFrame-based APIs in the 2.x series to reach feature parity with the RDD-based APIs. And once we reach feature parity, this package will be deprecated.

    Definition Classes
    spark
    See also

    SPARK-4591 to track the progress of feature parity

  • package tree

    This package contains the default implementation of the decision tree algorithm, which supports:

    This package contains the default implementation of the decision tree algorithm, which supports:

    • binary classification,
    • regression,
    • information loss calculation with entropy and Gini for classification and variance for regression,
    • both continuous and categorical features.
    Definition Classes
    mllib
  • package model
    Definition Classes
    tree
  • DecisionTreeModel
  • GradientBoostedTreesModel
  • InformationGainStats
  • Node
  • Predict
  • RandomForestModel
  • Split

class Node extends Serializable with Logging

Node in a decision tree.

About node indexing: Nodes are indexed from 1. Node 1 is the root; nodes 2, 3 are the left, right children. Node index 0 is not used.

Annotations
@Since("1.0.0")
Source
Node.scala
Linear Supertypes
Logging, Serializable, AnyRef, Any
Ordering
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Inherited
  1. Node
  2. Logging
  3. Serializable
  4. AnyRef
  5. Any
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Visibility
  1. Public
  2. Protected

Instance Constructors

  1. new Node(id: Int, predict: Predict, impurity: Double, isLeaf: Boolean, split: Option[Split], leftNode: Option[Node], rightNode: Option[Node], stats: Option[InformationGainStats])

    id

    integer node id, from 1

    predict

    predicted value at the node

    impurity

    current node impurity

    isLeaf

    whether the node is a leaf

    split

    split to calculate left and right nodes

    leftNode

    left child

    rightNode

    right child

    stats

    information gain stats

    Annotations
    @Since("1.2.0")

Type Members

  1. implicit class LogStringContext extends AnyRef
    Definition Classes
    Logging

Value Members

  1. final def !=(arg0: Any): Boolean
    Definition Classes
    AnyRef → Any
  2. final def ##: Int
    Definition Classes
    AnyRef → Any
  3. final def ==(arg0: Any): Boolean
    Definition Classes
    AnyRef → Any
  4. def MDC(key: LogKey, value: Any): MDC
    Attributes
    protected
    Definition Classes
    Logging
  5. final def asInstanceOf[T0]: T0
    Definition Classes
    Any
  6. def clone(): AnyRef
    Attributes
    protected[lang]
    Definition Classes
    AnyRef
    Annotations
    @throws(classOf[java.lang.CloneNotSupportedException]) @IntrinsicCandidate() @native()
  7. final def eq(arg0: AnyRef): Boolean
    Definition Classes
    AnyRef
  8. def equals(arg0: AnyRef): Boolean
    Definition Classes
    AnyRef → Any
  9. final def getClass(): Class[_ <: AnyRef]
    Definition Classes
    AnyRef → Any
    Annotations
    @IntrinsicCandidate() @native()
  10. def hashCode(): Int
    Definition Classes
    AnyRef → Any
    Annotations
    @IntrinsicCandidate() @native()
  11. val id: Int
    Annotations
    @Since("1.0.0")
  12. var impurity: Double
    Annotations
    @Since("1.2.0")
  13. def initializeLogIfNecessary(isInterpreter: Boolean, silent: Boolean): Boolean
    Attributes
    protected
    Definition Classes
    Logging
  14. def initializeLogIfNecessary(isInterpreter: Boolean): Unit
    Attributes
    protected
    Definition Classes
    Logging
  15. final def isInstanceOf[T0]: Boolean
    Definition Classes
    Any
  16. var isLeaf: Boolean
    Annotations
    @Since("1.0.0")
  17. def isTraceEnabled(): Boolean
    Attributes
    protected
    Definition Classes
    Logging
  18. var leftNode: Option[Node]
    Annotations
    @Since("1.0.0")
  19. def log: Logger
    Attributes
    protected
    Definition Classes
    Logging
  20. def logBasedOnLevel(level: Level)(f: => MessageWithContext): Unit
    Attributes
    protected
    Definition Classes
    Logging
  21. def logDebug(msg: => String, throwable: Throwable): Unit
    Attributes
    protected
    Definition Classes
    Logging
  22. def logDebug(entry: LogEntry, throwable: Throwable): Unit
    Attributes
    protected
    Definition Classes
    Logging
  23. def logDebug(entry: LogEntry): Unit
    Attributes
    protected
    Definition Classes
    Logging
  24. def logDebug(msg: => String): Unit
    Attributes
    protected
    Definition Classes
    Logging
  25. def logError(msg: => String, throwable: Throwable): Unit
    Attributes
    protected
    Definition Classes
    Logging
  26. def logError(entry: LogEntry, throwable: Throwable): Unit
    Attributes
    protected
    Definition Classes
    Logging
  27. def logError(entry: LogEntry): Unit
    Attributes
    protected
    Definition Classes
    Logging
  28. def logError(msg: => String): Unit
    Attributes
    protected
    Definition Classes
    Logging
  29. def logInfo(msg: => String, throwable: Throwable): Unit
    Attributes
    protected
    Definition Classes
    Logging
  30. def logInfo(entry: LogEntry, throwable: Throwable): Unit
    Attributes
    protected
    Definition Classes
    Logging
  31. def logInfo(entry: LogEntry): Unit
    Attributes
    protected
    Definition Classes
    Logging
  32. def logInfo(msg: => String): Unit
    Attributes
    protected
    Definition Classes
    Logging
  33. def logName: String
    Attributes
    protected
    Definition Classes
    Logging
  34. def logTrace(msg: => String, throwable: Throwable): Unit
    Attributes
    protected
    Definition Classes
    Logging
  35. def logTrace(entry: LogEntry, throwable: Throwable): Unit
    Attributes
    protected
    Definition Classes
    Logging
  36. def logTrace(entry: LogEntry): Unit
    Attributes
    protected
    Definition Classes
    Logging
  37. def logTrace(msg: => String): Unit
    Attributes
    protected
    Definition Classes
    Logging
  38. def logWarning(msg: => String, throwable: Throwable): Unit
    Attributes
    protected
    Definition Classes
    Logging
  39. def logWarning(entry: LogEntry, throwable: Throwable): Unit
    Attributes
    protected
    Definition Classes
    Logging
  40. def logWarning(entry: LogEntry): Unit
    Attributes
    protected
    Definition Classes
    Logging
  41. def logWarning(msg: => String): Unit
    Attributes
    protected
    Definition Classes
    Logging
  42. final def ne(arg0: AnyRef): Boolean
    Definition Classes
    AnyRef
  43. final def notify(): Unit
    Definition Classes
    AnyRef
    Annotations
    @IntrinsicCandidate() @native()
  44. final def notifyAll(): Unit
    Definition Classes
    AnyRef
    Annotations
    @IntrinsicCandidate() @native()
  45. def predict(features: Vector): Double

    predict value if node is not leaf

    predict value if node is not leaf

    features

    feature value

    returns

    predicted value

    Annotations
    @Since("1.1.0")
  46. var predict: Predict
    Annotations
    @Since("1.0.0")
  47. var rightNode: Option[Node]
    Annotations
    @Since("1.0.0")
  48. var split: Option[Split]
    Annotations
    @Since("1.0.0")
  49. var stats: Option[InformationGainStats]
    Annotations
    @Since("1.0.0")
  50. final def synchronized[T0](arg0: => T0): T0
    Definition Classes
    AnyRef
  51. def toString(): String
    Definition Classes
    Node → AnyRef → Any
  52. final def wait(arg0: Long, arg1: Int): Unit
    Definition Classes
    AnyRef
    Annotations
    @throws(classOf[java.lang.InterruptedException])
  53. final def wait(arg0: Long): Unit
    Definition Classes
    AnyRef
    Annotations
    @throws(classOf[java.lang.InterruptedException]) @native()
  54. final def wait(): Unit
    Definition Classes
    AnyRef
    Annotations
    @throws(classOf[java.lang.InterruptedException])
  55. def withLogContext(context: Map[String, String])(body: => Unit): Unit
    Attributes
    protected
    Definition Classes
    Logging

Deprecated Value Members

  1. def finalize(): Unit
    Attributes
    protected[lang]
    Definition Classes
    AnyRef
    Annotations
    @throws(classOf[java.lang.Throwable]) @Deprecated
    Deprecated

    (Since version 9)

Inherited from Logging

Inherited from Serializable

Inherited from AnyRef

Inherited from Any

Ungrouped