org.apache.spark.mllib.regression

StreamingLinearRegressionWithSGD

class StreamingLinearRegressionWithSGD extends StreamingLinearAlgorithm[LinearRegressionModel, LinearRegressionWithSGD] with Serializable

:: Experimental :: Train or predict a linear regression model on streaming data. Training uses Stochastic Gradient Descent to update the model based on each new batch of incoming data from a DStream (see LinearRegressionWithSGD for model equation)

Each batch of data is assumed to be an RDD of LabeledPoints. The number of data points per batch can vary, but the number of features must be constant. An initial weight vector must be provided.

Use a builder pattern to construct a streaming linear regression analysis in an application, like:

val model = new StreamingLinearRegressionWithSGD() .setStepSize(0.5) .setNumIterations(10) .setInitialWeights(Vectors.dense(...)) .trainOn(DStream)

Annotations
@Experimental()
Linear Supertypes
Serializable, Serializable, StreamingLinearAlgorithm[LinearRegressionModel, LinearRegressionWithSGD], Logging, AnyRef, Any
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  1. StreamingLinearRegressionWithSGD
  2. Serializable
  3. Serializable
  4. StreamingLinearAlgorithm
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Instance Constructors

  1. new StreamingLinearRegressionWithSGD()

    Construct a StreamingLinearRegression object with default parameters: {stepSize: 0.

    Construct a StreamingLinearRegression object with default parameters: {stepSize: 0.1, numIterations: 50, miniBatchFraction: 1.0}. Initial weights must be set before using trainOn or predictOn (see StreamingLinearAlgorithm)

Value Members

  1. final def !=(arg0: AnyRef): Boolean

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    AnyRef

  2. final def !=(arg0: Any): Boolean

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  3. final def ##(): Int

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  4. final def ==(arg0: AnyRef): Boolean

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  5. final def ==(arg0: Any): Boolean

    Definition Classes
    Any

  6. val algorithm: LinearRegressionWithSGD

    The algorithm to use for updating.

    The algorithm to use for updating.

    Definition Classes
    StreamingLinearRegressionWithSGD → StreamingLinearAlgorithm

  7. final def asInstanceOf[T0]: T0

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  8. def clone(): AnyRef

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  9. final def eq(arg0: AnyRef): Boolean

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  10. def equals(arg0: Any): Boolean

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  11. def finalize(): Unit

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  12. final def getClass(): Class[_]

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  13. def hashCode(): Int

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  14. final def isInstanceOf[T0]: Boolean

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  15. def isTraceEnabled(): Boolean

    Attributes
    protected
    Definition Classes
    Logging

  16. def latestModel(): LinearRegressionModel

    Return the latest model.

    Return the latest model.

    Definition Classes
    StreamingLinearAlgorithm

  17. def log: Logger

    Attributes
    protected
    Definition Classes
    Logging

  18. def logDebug(msg: ⇒ String, throwable: Throwable): Unit

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    protected
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    Logging

  19. def logDebug(msg: ⇒ String): Unit

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    protected
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  20. def logError(msg: ⇒ String, throwable: Throwable): Unit

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  21. def logError(msg: ⇒ String): Unit

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  22. def logInfo(msg: ⇒ String, throwable: Throwable): Unit

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  23. def logInfo(msg: ⇒ String): Unit

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  24. def logName: String

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    Logging

  25. def logTrace(msg: ⇒ String, throwable: Throwable): Unit

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  26. def logTrace(msg: ⇒ String): Unit

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  27. def logWarning(msg: ⇒ String, throwable: Throwable): Unit

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    protected
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    Logging

  28. def logWarning(msg: ⇒ String): Unit

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    Logging

  29. var model: Option[LinearRegressionModel]

    The model to be updated and used for prediction.

    The model to be updated and used for prediction.

    Attributes
    protected
    Definition Classes
    StreamingLinearRegressionWithSGD → StreamingLinearAlgorithm

  30. final def ne(arg0: AnyRef): Boolean

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  31. final def notify(): Unit

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  32. final def notifyAll(): Unit

    Definition Classes
    AnyRef

  33. def predictOn(data: JavaDStream[Vector]): JavaDStream[Double]

    Java-friendly version of predictOn.

    Java-friendly version of predictOn.

    Definition Classes
    StreamingLinearAlgorithm

  34. def predictOn(data: DStream[Vector]): DStream[Double]

    Use the model to make predictions on batches of data from a DStream

    Use the model to make predictions on batches of data from a DStream

    data

    DStream containing feature vectors

    returns

    DStream containing predictions

    Definition Classes
    StreamingLinearAlgorithm

  35. def predictOnValues[K](data: JavaPairDStream[K, Vector]): JavaPairDStream[K, Double]

    Java-friendly version of predictOnValues.

    Java-friendly version of predictOnValues.

    Definition Classes
    StreamingLinearAlgorithm

  36. def predictOnValues[K](data: DStream[(K, Vector)])(implicit arg0: ClassTag[K]): DStream[(K, Double)]

    Use the model to make predictions on the values of a DStream and carry over its keys.

    Use the model to make predictions on the values of a DStream and carry over its keys.

    K

    key type

    data

    DStream containing feature vectors

    returns

    DStream containing the input keys and the predictions as values

    Definition Classes
    StreamingLinearAlgorithm

  37. def setInitialWeights(initialWeights: Vector): StreamingLinearRegressionWithSGD.this.type

    Set the initial weights.

    Set the initial weights. Default: [0.0, 0.0].

  38. def setMiniBatchFraction(miniBatchFraction: Double): StreamingLinearRegressionWithSGD.this.type

    Set the fraction of each batch to use for updates.

    Set the fraction of each batch to use for updates. Default: 1.0.

  39. def setNumIterations(numIterations: Int): StreamingLinearRegressionWithSGD.this.type

    Set the number of iterations of gradient descent to run per update.

    Set the number of iterations of gradient descent to run per update. Default: 50.

  40. def setStepSize(stepSize: Double): StreamingLinearRegressionWithSGD.this.type

    Set the step size for gradient descent.

    Set the step size for gradient descent. Default: 0.1.

  41. final def synchronized[T0](arg0: ⇒ T0): T0

    Definition Classes
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  42. def toString(): String

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    AnyRef → Any

  43. def trainOn(data: JavaDStream[LabeledPoint]): Unit

    Java-friendly version of trainOn.

    Java-friendly version of trainOn.

    Definition Classes
    StreamingLinearAlgorithm

  44. def trainOn(data: DStream[LabeledPoint]): Unit

    Update the model by training on batches of data from a DStream.

    Update the model by training on batches of data from a DStream. This operation registers a DStream for training the model, and updates the model based on every subsequent batch of data from the stream.

    data

    DStream containing labeled data

    Definition Classes
    StreamingLinearAlgorithm

  45. final def wait(): Unit

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    AnyRef
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    @throws( ... )

  46. final def wait(arg0: Long, arg1: Int): Unit

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  47. final def wait(arg0: Long): Unit

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Inherited from Serializable

Inherited from Serializable

Inherited from StreamingLinearAlgorithm[LinearRegressionModel, LinearRegressionWithSGD]

Inherited from Logging

Inherited from AnyRef

Inherited from Any

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