Class/Object

org.apache.spark.ml.mleap.feature

Imputer

Related Docs: object Imputer | package feature

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class Imputer extends Estimator[ImputerModel] with ImputerParams with DefaultParamsWritable

:: Experimental :: Imputation estimator for completing missing values, either using the mean or the median of the column in which the missing values are located. The input column should be of DoubleType or FloatType. Currently Imputer does not support categorical features yet (SPARK-15041) and possibly creates incorrect values for a categorical feature.

Note that the mean/median value is computed after filtering out missing values. All Null values in the input column are treated as missing, and so are also imputed.

Annotations
@Experimental()
Linear Supertypes
DefaultParamsWritable, MLWritable, ImputerParams, HasOutputCol, HasInputCol, Estimator[ImputerModel], PipelineStage, Logging, Params, Serializable, Serializable, Identifiable, AnyRef, Any
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Inherited
  1. Imputer
  2. DefaultParamsWritable
  3. MLWritable
  4. ImputerParams
  5. HasOutputCol
  6. HasInputCol
  7. Estimator
  8. PipelineStage
  9. Logging
  10. Params
  11. Serializable
  12. Serializable
  13. Identifiable
  14. AnyRef
  15. Any
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Visibility
  1. Public
  2. All

Instance Constructors

  1. new Imputer()

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    Annotations
    @Since( "2.1.0" )

  2. new Imputer(uid: String)

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    Annotations
    @Since( "2.1.0" )

Value Members

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

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    Definition Classes
    AnyRef → Any

  2. final def ##(): Int

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    AnyRef → Any

  3. final def $[T](param: Param[T]): T

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    protected
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    Params

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

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    Definition Classes
    AnyRef → Any

  5. final def asInstanceOf[T0]: T0

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    Any

  6. final def clear(param: Param[_]): Imputer.this.type

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    Definition Classes
    Params

  7. def clone(): AnyRef

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    protected[java.lang]
    Definition Classes
    AnyRef
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    @throws( ... )

  8. def copy(extra: ParamMap): Imputer

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    Definition Classes
    Imputer → Estimator → PipelineStage → Params

  9. def copyValues[T <: Params](to: T, extra: ParamMap): T

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    Attributes
    protected
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    Params

  10. final def defaultCopy[T <: Params](extra: ParamMap): T

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

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    AnyRef

  12. def equals(arg0: Any): Boolean

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    AnyRef → Any

  13. def explainParam(param: Param[_]): String

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    Definition Classes
    Params

  14. def explainParams(): String

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    Params

  15. final def extractParamMap(): ParamMap

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    Params

  16. final def extractParamMap(extra: ParamMap): ParamMap

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    Params

  17. def finalize(): Unit

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    protected[java.lang]
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    @throws( classOf[java.lang.Throwable] )

  18. def fit(dataset: Dataset[_]): ImputerModel

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    Definition Classes
    Imputer → Estimator

  19. def fit(dataset: Dataset[_], paramMaps: Array[ParamMap]): Seq[ImputerModel]

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    Definition Classes
    Estimator
    Annotations
    @Since( "2.0.0" )

  20. def fit(dataset: Dataset[_], paramMap: ParamMap): ImputerModel

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    Definition Classes
    Estimator
    Annotations
    @Since( "2.0.0" )

  21. def fit(dataset: Dataset[_], firstParamPair: ParamPair[_], otherParamPairs: ParamPair[_]*): ImputerModel

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    Definition Classes
    Estimator
    Annotations
    @Since( "2.0.0" ) @varargs()

  22. final def get[T](param: Param[T]): Option[T]

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    Params

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

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    AnyRef → Any

  24. final def getDefault[T](param: Param[T]): Option[T]

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    Params

  25. def getImputeValue: Double

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    @Since( "2.1.0" )

  26. final def getInputCol: String

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    Definition Classes
    HasInputCol

  27. def getMissingValue: Double

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    Definition Classes
    ImputerParams

  28. final def getOrDefault[T](param: Param[T]): T

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    Params

  29. final def getOutputCol: String

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    HasOutputCol

  30. def getParam(paramName: String): Param[Any]

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    Params

  31. def getStrategy: String

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    Definition Classes
    ImputerParams

  32. final def hasDefault[T](param: Param[T]): Boolean

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    Params

  33. def hasParam(paramName: String): Boolean

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  34. def hashCode(): Int

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  35. val imputeValue: DoubleParam

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    @Since( "2.1.0" )

  36. def initializeLogIfNecessary(isInterpreter: Boolean, silent: Boolean): Boolean

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    Logging

  37. def initializeLogIfNecessary(isInterpreter: Boolean): Unit

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    Logging

  38. final val inputCol: Param[String]

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    Definition Classes
    HasInputCol

  39. final def isDefined(param: Param[_]): Boolean

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    Params

  40. final def isInstanceOf[T0]: Boolean

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  41. final def isSet(param: Param[_]): Boolean

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  42. def isTraceEnabled(): Boolean

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    Logging

  43. def log: Logger

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    Logging

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

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    Logging

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

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    Logging

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

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    Logging

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

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

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

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  50. def logName: String

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

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

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

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    Logging

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

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    Logging

  55. val missingValue: DoubleParam

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    The placeholder for the missing values.

    The placeholder for the missing values. All occurrences of missingValue will be imputed. Note that null values are always treated as missing. Default: Double.NaN

    Definition Classes
    ImputerParams

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

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    AnyRef

  57. final def notify(): Unit

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    AnyRef

  58. final def notifyAll(): Unit

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    AnyRef

  59. final val outputCol: Param[String]

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    HasOutputCol

  60. lazy val params: Array[Param[_]]

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    Params

  61. def save(path: String): Unit

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    Definition Classes
    MLWritable
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    @Since( "1.6.0" ) @throws( ... )

  62. final def set(paramPair: ParamPair[_]): Imputer.this.type

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  63. final def set(param: String, value: Any): Imputer.this.type

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  64. final def set[T](param: Param[T], value: T): Imputer.this.type

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  65. final def setDefault(paramPairs: ParamPair[_]*): Imputer.this.type

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  66. final def setDefault[T](param: Param[T], value: T): Imputer.this.type

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  67. def setInputCol(value: String): Imputer.this.type

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    @Since( "2.1.0" )

  68. def setMissingValue(value: Double): Imputer.this.type

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    @Since( "2.1.0" )

  69. def setOutputCol(value: String): Imputer.this.type

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    @Since( "2.1.0" )

  70. def setStrategy(value: String): Imputer.this.type

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    Imputation strategy.

    Imputation strategy. Available options are ["mean", "median"].

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    @Since( "2.1.0" )

  71. val strategy: Param[String]

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    The imputation strategy.

    The imputation strategy. If "mean", then replace missing values using the mean value of the feature. If "median", then replace missing values using the approximate median value of the feature. Default: mean

    Definition Classes
    ImputerParams

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

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    AnyRef

  73. def toString(): String

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    Identifiable → AnyRef → Any

  74. def transformSchema(schema: StructType): StructType

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    Imputer → PipelineStage

  75. def transformSchema(schema: StructType, logging: Boolean): StructType

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    @DeveloperApi()

  76. val uid: String

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    Definition Classes
    Imputer → Identifiable

  77. def validateAndTransformSchema(schema: StructType): StructType

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    Validates and transforms the input schema.

    Validates and transforms the input schema.

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    ImputerParams

  78. final def wait(): Unit

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    @throws( ... )

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

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    @throws( ... )

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

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    @throws( ... )

  81. def write: MLWriter

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    Definition Classes
    DefaultParamsWritable → MLWritable

Inherited from DefaultParamsWritable

Inherited from MLWritable

Inherited from ImputerParams

Inherited from HasOutputCol

Inherited from HasInputCol

Inherited from Estimator[ImputerModel]

Inherited from PipelineStage

Inherited from Logging

Inherited from Params

Inherited from Serializable

Inherited from Serializable

Inherited from Identifiable

Inherited from AnyRef

Inherited from Any

getParam

param

setParam

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