org.apache.spark.ml.param

Params

trait Params extends Identifiable with Serializable

:: DeveloperApi :: Trait for components that take parameters. This also provides an internal param map to store parameter values attached to the instance.

Annotations
@DeveloperApi()
Linear Supertypes
Serializable, Serializable, Identifiable, AnyRef, Any
Known Subclasses
ALS, ALSModel, Binarizer, BinaryClassificationEvaluator, Bucketizer, ClassificationModel, Classifier, CountVectorizer, CountVectorizerModel, CrossValidator, CrossValidatorModel, DCT, DecisionTreeClassificationModel, DecisionTreeClassifier, DecisionTreeRegressionModel, DecisionTreeRegressor, ElementwiseProduct, Estimator, Evaluator, GBTClassificationModel, GBTClassifier, GBTRegressionModel, GBTRegressor, HashingTF, IDF, IDFModel, IndexToString, IsotonicRegression, IsotonicRegressionModel, JavaParams, KMeans, KMeansModel, LinearRegression, LinearRegressionModel, LogisticRegression, LogisticRegressionModel, MinMaxScaler, MinMaxScalerModel, Model, MulticlassClassificationEvaluator, MultilayerPerceptronClassificationModel, MultilayerPerceptronClassifier, NGram, NaiveBayes, NaiveBayesModel, Normalizer, OneHotEncoder, OneVsRest, OneVsRestModel, PCA, PCAModel, Pipeline, PipelineModel, PipelineStage, PolynomialExpansion, PredictionModel, Predictor, ProbabilisticClassificationModel, ProbabilisticClassifier, RFormula, RFormulaModel, RandomForestClassificationModel, RandomForestClassifier, RandomForestRegressionModel, RandomForestRegressor, RegexTokenizer, RegressionEvaluator, RegressionModel, StandardScaler, StandardScalerModel, StopWordsRemover, StringIndexer, StringIndexerModel, Tokenizer, TrainValidationSplit, TrainValidationSplitModel, Transformer, UnaryTransformer, VectorAssembler, VectorIndexer, VectorIndexerModel, VectorSlicer, Word2Vec, Word2VecModel
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Abstract Value Members

  1. abstract def copy(extra: ParamMap): Params

    Creates a copy of this instance with the same UID and some extra params.

    Creates a copy of this instance with the same UID and some extra params. Subclasses should implement this method and set the return type properly.

    See also

    defaultCopy()

  2. abstract val uid: String

    An immutable unique ID for the object and its derivatives.

    An immutable unique ID for the object and its derivatives.

    Definition Classes
    Identifiable

Concrete Value Members

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

    Definition Classes
    AnyRef

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

    Definition Classes
    Any

  3. final def ##(): Int

    Definition Classes
    AnyRef → Any

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

    An alias for getOrDefault().

    An alias for getOrDefault().

    Attributes
    protected

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

    Definition Classes
    AnyRef

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

    Definition Classes
    Any

  7. final def asInstanceOf[T0]: T0

    Definition Classes
    Any

  8. final def clear(param: Param[_]): Params.this.type

    Clears the user-supplied value for the input param.

    Clears the user-supplied value for the input param.

    Attributes
    protected

  9. def clone(): AnyRef

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

  10. def copyValues[T <: Params](to: T, extra: ParamMap = ParamMap.empty): T

    Copies param values from this instance to another instance for params shared by them.

    Copies param values from this instance to another instance for params shared by them.

    This handles default Params and explicitly set Params separately. Default Params are copied from and to defaultParamMap, and explicitly set Params are copied from and to paramMap. Warning: This implicitly assumes that this Params instance and the target instance share the same set of default Params.

    to

    the target instance, which should work with the same set of default Params as this source instance

    extra

    extra params to be copied to the target's paramMap

    returns

    the target instance with param values copied

    Attributes
    protected

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

    Default implementation of copy with extra params.

    Default implementation of copy with extra params. It tries to create a new instance with the same UID. Then it copies the embedded and extra parameters over and returns the new instance.

    Attributes
    protected

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

    Definition Classes
    AnyRef

  13. def equals(arg0: Any): Boolean

    Definition Classes
    AnyRef → Any

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

    Explains a param.

    Explains a param.

    param

    input param, must belong to this instance.

    returns

    a string that contains the input param name, doc, and optionally its default value and the user-supplied value

  15. def explainParams(): String

    Explains all params of this instance.

    Explains all params of this instance.

    See also

    explainParam()

  16. final def extractParamMap(): ParamMap

    extractParamMap with no extra values.

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

    Extracts the embedded default param values and user-supplied values, and then merges them with extra values from input into a flat param map, where the latter value is used if there exist conflicts, i.

    Extracts the embedded default param values and user-supplied values, and then merges them with extra values from input into a flat param map, where the latter value is used if there exist conflicts, i.e., with ordering: default param values < user-supplied values < extra.

  18. def finalize(): Unit

    Attributes
    protected[java.lang]
    Definition Classes
    AnyRef
    Annotations
    @throws( classOf[java.lang.Throwable] )

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

    Optionally returns the user-supplied value of a param.

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

    Definition Classes
    AnyRef → Any

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

    Gets the default value of a parameter.

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

    Gets the value of a param in the embedded param map or its default value.

    Gets the value of a param in the embedded param map or its default value. Throws an exception if neither is set.

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

    Gets a param by its name.

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

    Tests whether the input param has a default value set.

  25. def hasParam(paramName: String): Boolean

    Tests whether this instance contains a param with a given name.

  26. def hashCode(): Int

    Definition Classes
    AnyRef → Any

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

    Checks whether a param is explicitly set or has a default value.

  28. final def isInstanceOf[T0]: Boolean

    Definition Classes
    Any

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

    Checks whether a param is explicitly set.

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

    Definition Classes
    AnyRef

  31. final def notify(): Unit

    Definition Classes
    AnyRef

  32. final def notifyAll(): Unit

    Definition Classes
    AnyRef

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

    Returns all params sorted by their names.

    Returns all params sorted by their names. The default implementation uses Java reflection to list all public methods that have no arguments and return Param.

    Note: Developer should not use this method in constructor because we cannot guarantee that this variable gets initialized before other params.

  34. final def set(paramPair: ParamPair[_]): Params.this.type

    Sets a parameter in the embedded param map.

    Sets a parameter in the embedded param map.

    Attributes
    protected

  35. final def set(param: String, value: Any): Params.this.type

    Sets a parameter (by name) in the embedded param map.

    Sets a parameter (by name) in the embedded param map.

    Attributes
    protected

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

    Sets a parameter in the embedded param map.

    Sets a parameter in the embedded param map.

    Attributes
    protected

  37. final def setDefault(paramPairs: ParamPair[_]*): Params.this.type

    Sets default values for a list of params.

    Sets default values for a list of params.

    Note: Java developers should use the single-parameter setDefault(). Annotating this with varargs can cause compilation failures due to a Scala compiler bug. See SPARK-9268.

    paramPairs

    a list of param pairs that specify params and their default values to set respectively. Make sure that the params are initialized before this method gets called.

    Attributes
    protected

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

    Sets a default value for a param.

    Sets a default value for a param.

    param

    param to set the default value. Make sure that this param is initialized before this method gets called.

    value

    the default value

    Attributes
    protected

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

    Definition Classes
    AnyRef

  40. def toString(): String

    Definition Classes
    Identifiable → AnyRef → Any

  41. def validateParams(): Unit

    Validates parameter values stored internally.

    Validates parameter values stored internally. Raise an exception if any parameter value is invalid.

    This only needs to check for interactions between parameters. Parameter value checks which do not depend on other parameters are handled by Param.validate(). This method does not handle input/output column parameters; those are checked during schema validation.

  42. final def wait(): Unit

    Definition Classes
    AnyRef
    Annotations
    @throws( ... )

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

    Definition Classes
    AnyRef
    Annotations
    @throws( ... )

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

    Definition Classes
    AnyRef
    Annotations
    @throws( ... )

Inherited from Serializable

Inherited from Serializable

Inherited from Identifiable

Inherited from AnyRef

Inherited from Any

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