Packages

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()
    Annotations
    @Since( "2.1.0" )
  2. new Imputer(uid: String)
    Annotations
    @Since( "2.1.0" )

Value Members

  1. final def !=(arg0: Any): Boolean
    Definition Classes
    AnyRef → Any
  2. final def ##(): Int
    Definition Classes
    AnyRef → Any
  3. final def $[T](param: Param[T]): T
    Attributes
    protected
    Definition Classes
    Params
  4. final def ==(arg0: Any): Boolean
    Definition Classes
    AnyRef → Any
  5. final def asInstanceOf[T0]: T0
    Definition Classes
    Any
  6. final def clear(param: Param[_]): Imputer.this.type
    Definition Classes
    Params
  7. def clone(): AnyRef
    Attributes
    protected[lang]
    Definition Classes
    AnyRef
    Annotations
    @throws( ... ) @native() @HotSpotIntrinsicCandidate()
  8. def copy(extra: ParamMap): Imputer
    Definition Classes
    Imputer → Estimator → PipelineStage → Params
  9. def copyValues[T <: Params](to: T, extra: ParamMap): T
    Attributes
    protected
    Definition Classes
    Params
  10. final def defaultCopy[T <: Params](extra: ParamMap): T
    Attributes
    protected
    Definition Classes
    Params
  11. final def eq(arg0: AnyRef): Boolean
    Definition Classes
    AnyRef
  12. def equals(arg0: Any): Boolean
    Definition Classes
    AnyRef → Any
  13. def explainParam(param: Param[_]): String
    Definition Classes
    Params
  14. def explainParams(): String
    Definition Classes
    Params
  15. final def extractParamMap(): ParamMap
    Definition Classes
    Params
  16. final def extractParamMap(extra: ParamMap): ParamMap
    Definition Classes
    Params
  17. def fit(dataset: Dataset[_]): ImputerModel
    Definition Classes
    Imputer → Estimator
  18. def fit(dataset: Dataset[_], paramMaps: Seq[ParamMap]): Seq[ImputerModel]
    Definition Classes
    Estimator
    Annotations
    @Since( "2.0.0" )
  19. def fit(dataset: Dataset[_], paramMap: ParamMap): ImputerModel
    Definition Classes
    Estimator
    Annotations
    @Since( "2.0.0" )
  20. def fit(dataset: Dataset[_], firstParamPair: ParamPair[_], otherParamPairs: ParamPair[_]*): ImputerModel
    Definition Classes
    Estimator
    Annotations
    @Since( "2.0.0" ) @varargs()
  21. final def get[T](param: Param[T]): Option[T]
    Definition Classes
    Params
  22. final def getClass(): Class[_]
    Definition Classes
    AnyRef → Any
    Annotations
    @native() @HotSpotIntrinsicCandidate()
  23. final def getDefault[T](param: Param[T]): Option[T]
    Definition Classes
    Params
  24. def getImputeValue: Double
    Annotations
    @Since( "2.1.0" )
  25. final def getInputCol: String
    Definition Classes
    HasInputCol
  26. def getMissingValue: Double

    Definition Classes
    ImputerParams
  27. final def getOrDefault[T](param: Param[T]): T
    Definition Classes
    Params
  28. final def getOutputCol: String
    Definition Classes
    HasOutputCol
  29. def getParam(paramName: String): Param[Any]
    Definition Classes
    Params
  30. def getStrategy: String

    Definition Classes
    ImputerParams
  31. final def hasDefault[T](param: Param[T]): Boolean
    Definition Classes
    Params
  32. def hasParam(paramName: String): Boolean
    Definition Classes
    Params
  33. def hashCode(): Int
    Definition Classes
    AnyRef → Any
    Annotations
    @native() @HotSpotIntrinsicCandidate()
  34. val imputeValue: DoubleParam
    Annotations
    @Since( "2.1.0" )
  35. def initializeLogIfNecessary(isInterpreter: Boolean, silent: Boolean): Boolean
    Attributes
    protected
    Definition Classes
    Logging
  36. def initializeLogIfNecessary(isInterpreter: Boolean): Unit
    Attributes
    protected
    Definition Classes
    Logging
  37. final val inputCol: Param[String]
    Definition Classes
    HasInputCol
  38. final def isDefined(param: Param[_]): Boolean
    Definition Classes
    Params
  39. final def isInstanceOf[T0]: Boolean
    Definition Classes
    Any
  40. final def isSet(param: Param[_]): Boolean
    Definition Classes
    Params
  41. def isTraceEnabled(): Boolean
    Attributes
    protected
    Definition Classes
    Logging
  42. def log: Logger
    Attributes
    protected
    Definition Classes
    Logging
  43. def logDebug(msg: ⇒ String, throwable: Throwable): Unit
    Attributes
    protected
    Definition Classes
    Logging
  44. def logDebug(msg: ⇒ String): Unit
    Attributes
    protected
    Definition Classes
    Logging
  45. def logError(msg: ⇒ String, throwable: Throwable): Unit
    Attributes
    protected
    Definition Classes
    Logging
  46. def logError(msg: ⇒ String): Unit
    Attributes
    protected
    Definition Classes
    Logging
  47. def logInfo(msg: ⇒ String, throwable: Throwable): Unit
    Attributes
    protected
    Definition Classes
    Logging
  48. def logInfo(msg: ⇒ String): Unit
    Attributes
    protected
    Definition Classes
    Logging
  49. def logName: String
    Attributes
    protected
    Definition Classes
    Logging
  50. def logTrace(msg: ⇒ String, throwable: Throwable): Unit
    Attributes
    protected
    Definition Classes
    Logging
  51. def logTrace(msg: ⇒ String): Unit
    Attributes
    protected
    Definition Classes
    Logging
  52. def logWarning(msg: ⇒ String, throwable: Throwable): Unit
    Attributes
    protected
    Definition Classes
    Logging
  53. def logWarning(msg: ⇒ String): Unit
    Attributes
    protected
    Definition Classes
    Logging
  54. val missingValue: DoubleParam

    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
  55. final def ne(arg0: AnyRef): Boolean
    Definition Classes
    AnyRef
  56. final def notify(): Unit
    Definition Classes
    AnyRef
    Annotations
    @native() @HotSpotIntrinsicCandidate()
  57. final def notifyAll(): Unit
    Definition Classes
    AnyRef
    Annotations
    @native() @HotSpotIntrinsicCandidate()
  58. final val outputCol: Param[String]
    Definition Classes
    HasOutputCol
  59. lazy val params: Array[Param[_]]
    Definition Classes
    Params
  60. def save(path: String): Unit
    Definition Classes
    MLWritable
    Annotations
    @Since( "1.6.0" ) @throws( ... )
  61. final def set(paramPair: ParamPair[_]): Imputer.this.type
    Attributes
    protected
    Definition Classes
    Params
  62. final def set(param: String, value: Any): Imputer.this.type
    Attributes
    protected
    Definition Classes
    Params
  63. final def set[T](param: Param[T], value: T): Imputer.this.type
    Definition Classes
    Params
  64. final def setDefault(paramPairs: ParamPair[_]*): Imputer.this.type
    Attributes
    protected
    Definition Classes
    Params
  65. final def setDefault[T](param: Param[T], value: T): Imputer.this.type
    Attributes
    protected
    Definition Classes
    Params
  66. def setInputCol(value: String): Imputer.this.type

    Annotations
    @Since( "2.1.0" )
  67. def setMissingValue(value: Double): Imputer.this.type

    Annotations
    @Since( "2.1.0" )
  68. def setOutputCol(value: String): Imputer.this.type

    Annotations
    @Since( "2.1.0" )
  69. def setStrategy(value: String): Imputer.this.type

    Imputation strategy.

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

    Annotations
    @Since( "2.1.0" )
  70. val strategy: Param[String]

    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
  71. final def synchronized[T0](arg0: ⇒ T0): T0
    Definition Classes
    AnyRef
  72. def toString(): String
    Definition Classes
    Identifiable → AnyRef → Any
  73. def transformSchema(schema: StructType): StructType
    Definition Classes
    Imputer → PipelineStage
  74. def transformSchema(schema: StructType, logging: Boolean): StructType
    Attributes
    protected
    Definition Classes
    PipelineStage
    Annotations
    @DeveloperApi()
  75. val uid: String
    Definition Classes
    Imputer → Identifiable
  76. def validateAndTransformSchema(schema: StructType): StructType

    Validates and transforms the input schema.

    Validates and transforms the input schema.

    Attributes
    protected
    Definition Classes
    ImputerParams
  77. final def wait(arg0: Long, arg1: Int): Unit
    Definition Classes
    AnyRef
    Annotations
    @throws( ... )
  78. final def wait(arg0: Long): Unit
    Definition Classes
    AnyRef
    Annotations
    @throws( ... ) @native()
  79. final def wait(): Unit
    Definition Classes
    AnyRef
    Annotations
    @throws( ... )
  80. def write: MLWriter
    Definition Classes
    DefaultParamsWritable → MLWritable

Deprecated Value Members

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

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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