MaxAbsScaler (Spark 3.5.5 JavaDoc) (original) (raw)
Object
- org.apache.spark.ml.PipelineStage
- org.apache.spark.ml.Estimator<MaxAbsScalerModel>
- org.apache.spark.ml.feature.MaxAbsScaler
- org.apache.spark.ml.Estimator<MaxAbsScalerModel>
All Implemented Interfaces:
java.io.Serializable, org.apache.spark.internal.Logging, MaxAbsScalerParams, Params, HasInputCol, HasOutputCol, DefaultParamsWritable, Identifiable, MLWritable
public class MaxAbsScaler
extends Estimator<MaxAbsScalerModel>
implements MaxAbsScalerParams, DefaultParamsWritable
Rescale each feature individually to range [-1, 1] by dividing through the largest maximum absolute value in each feature. It does not shift/center the data, and thus does not destroy any sparsity.
See Also:
Serialized Form
Nested Class Summary
* ### Nested classes/interfaces inherited from interface org.apache.spark.internal.Logging `org.apache.spark.internal.Logging.SparkShellLoggingFilter`Constructor Summary
Constructors
Constructor and Description MaxAbsScaler() MaxAbsScaler(String uid) Method Summary
All Methods Static Methods Instance Methods Concrete Methods
Modifier and Type Method and Description MaxAbsScaler copy(ParamMap extra) Creates a copy of this instance with the same UID and some extra params. MaxAbsScalerModel fit(Dataset<?> dataset) Fits a model to the input data. Param inputCol() Param for input column name. static MaxAbsScaler load(String path) Param outputCol() Param for output column name. static MLReader read() MaxAbsScaler setInputCol(String value) MaxAbsScaler setOutputCol(String value) StructType transformSchema(StructType schema) Check transform validity and derive the output schema from the input schema. String uid() An immutable unique ID for the object and its derivatives. * ### Methods inherited from class org.apache.spark.ml.[Estimator](../../../../../org/apache/spark/ml/Estimator.html "class in org.apache.spark.ml") `[fit](../../../../../org/apache/spark/ml/Estimator.html#fit-org.apache.spark.sql.Dataset-org.apache.spark.ml.param.ParamMap-), [fit](../../../../../org/apache/spark/ml/Estimator.html#fit-org.apache.spark.sql.Dataset-org.apache.spark.ml.param.ParamPair-org.apache.spark.ml.param.ParamPair...-), [fit](../../../../../org/apache/spark/ml/Estimator.html#fit-org.apache.spark.sql.Dataset-org.apache.spark.ml.param.ParamPair-scala.collection.Seq-), [fit](../../../../../org/apache/spark/ml/Estimator.html#fit-org.apache.spark.sql.Dataset-scala.collection.Seq-)` * ### Methods inherited from class org.apache.spark.ml.[PipelineStage](../../../../../org/apache/spark/ml/PipelineStage.html "class in org.apache.spark.ml") `[params](../../../../../org/apache/spark/ml/PipelineStage.html#params--)` * ### Methods inherited from class Object `equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait` * ### Methods inherited from interface org.apache.spark.ml.feature.[MaxAbsScalerParams](../../../../../org/apache/spark/ml/feature/MaxAbsScalerParams.html "interface in org.apache.spark.ml.feature") `[validateAndTransformSchema](../../../../../org/apache/spark/ml/feature/MaxAbsScalerParams.html#validateAndTransformSchema-org.apache.spark.sql.types.StructType-)` * ### Methods inherited from interface org.apache.spark.ml.param.shared.[HasInputCol](../../../../../org/apache/spark/ml/param/shared/HasInputCol.html "interface in org.apache.spark.ml.param.shared") `[getInputCol](../../../../../org/apache/spark/ml/param/shared/HasInputCol.html#getInputCol--)` * ### Methods inherited from interface org.apache.spark.ml.param.shared.[HasOutputCol](../../../../../org/apache/spark/ml/param/shared/HasOutputCol.html "interface in org.apache.spark.ml.param.shared") `[getOutputCol](../../../../../org/apache/spark/ml/param/shared/HasOutputCol.html#getOutputCol--)` * ### Methods inherited from interface org.apache.spark.ml.param.[Params](../../../../../org/apache/spark/ml/param/Params.html "interface in org.apache.spark.ml.param") `[clear](../../../../../org/apache/spark/ml/param/Params.html#clear-org.apache.spark.ml.param.Param-), [copyValues](../../../../../org/apache/spark/ml/param/Params.html#copyValues-T-org.apache.spark.ml.param.ParamMap-), [defaultCopy](../../../../../org/apache/spark/ml/param/Params.html#defaultCopy-org.apache.spark.ml.param.ParamMap-), [defaultParamMap](../../../../../org/apache/spark/ml/param/Params.html#defaultParamMap--), [explainParam](../../../../../org/apache/spark/ml/param/Params.html#explainParam-org.apache.spark.ml.param.Param-), [explainParams](../../../../../org/apache/spark/ml/param/Params.html#explainParams--), [extractParamMap](../../../../../org/apache/spark/ml/param/Params.html#extractParamMap--), [extractParamMap](../../../../../org/apache/spark/ml/param/Params.html#extractParamMap-org.apache.spark.ml.param.ParamMap-), [get](../../../../../org/apache/spark/ml/param/Params.html#get-org.apache.spark.ml.param.Param-), [getDefault](../../../../../org/apache/spark/ml/param/Params.html#getDefault-org.apache.spark.ml.param.Param-), [getOrDefault](../../../../../org/apache/spark/ml/param/Params.html#getOrDefault-org.apache.spark.ml.param.Param-), [getParam](../../../../../org/apache/spark/ml/param/Params.html#getParam-java.lang.String-), [hasDefault](../../../../../org/apache/spark/ml/param/Params.html#hasDefault-org.apache.spark.ml.param.Param-), [hasParam](../../../../../org/apache/spark/ml/param/Params.html#hasParam-java.lang.String-), [isDefined](../../../../../org/apache/spark/ml/param/Params.html#isDefined-org.apache.spark.ml.param.Param-), [isSet](../../../../../org/apache/spark/ml/param/Params.html#isSet-org.apache.spark.ml.param.Param-), [onParamChange](../../../../../org/apache/spark/ml/param/Params.html#onParamChange-org.apache.spark.ml.param.Param-), [paramMap](../../../../../org/apache/spark/ml/param/Params.html#paramMap--), [params](../../../../../org/apache/spark/ml/param/Params.html#params--), [set](../../../../../org/apache/spark/ml/param/Params.html#set-org.apache.spark.ml.param.Param-T-), [set](../../../../../org/apache/spark/ml/param/Params.html#set-org.apache.spark.ml.param.ParamPair-), [set](../../../../../org/apache/spark/ml/param/Params.html#set-java.lang.String-java.lang.Object-), [setDefault](../../../../../org/apache/spark/ml/param/Params.html#setDefault-org.apache.spark.ml.param.Param-T-), [setDefault](../../../../../org/apache/spark/ml/param/Params.html#setDefault-scala.collection.Seq-), [shouldOwn](../../../../../org/apache/spark/ml/param/Params.html#shouldOwn-org.apache.spark.ml.param.Param-)` * ### Methods inherited from interface org.apache.spark.ml.util.[Identifiable](../../../../../org/apache/spark/ml/util/Identifiable.html "interface in org.apache.spark.ml.util") `[toString](../../../../../org/apache/spark/ml/util/Identifiable.html#toString--)` * ### Methods inherited from interface org.apache.spark.ml.util.[DefaultParamsWritable](../../../../../org/apache/spark/ml/util/DefaultParamsWritable.html "interface in org.apache.spark.ml.util") `[write](../../../../../org/apache/spark/ml/util/DefaultParamsWritable.html#write--)` * ### Methods inherited from interface org.apache.spark.ml.util.[MLWritable](../../../../../org/apache/spark/ml/util/MLWritable.html "interface in org.apache.spark.ml.util") `[save](../../../../../org/apache/spark/ml/util/MLWritable.html#save-java.lang.String-)` * ### Methods inherited from interface org.apache.spark.internal.Logging `$init$, initializeForcefully, initializeLogIfNecessary, initializeLogIfNecessary, initializeLogIfNecessary$default$2, initLock, isTraceEnabled, log, logDebug, logDebug, logError, logError, logInfo, logInfo, logName, logTrace, logTrace, logWarning, logWarning, org$apache$spark$internal$Logging$$log__$eq, org$apache$spark$internal$Logging$$log_, uninitialize`Constructor Detail
* #### MaxAbsScaler public MaxAbsScaler(String uid) * #### MaxAbsScaler public MaxAbsScaler()Method Detail
* #### load public static [MaxAbsScaler](../../../../../org/apache/spark/ml/feature/MaxAbsScaler.html "class in org.apache.spark.ml.feature") load(String path) * #### read public static [MLReader](../../../../../org/apache/spark/ml/util/MLReader.html "class in org.apache.spark.ml.util")<T> read() * #### outputCol public final [Param](../../../../../org/apache/spark/ml/param/Param.html "class in org.apache.spark.ml.param")<String> outputCol() Param for output column name. Specified by: `[outputCol](../../../../../org/apache/spark/ml/param/shared/HasOutputCol.html#outputCol--)` in interface `[HasOutputCol](../../../../../org/apache/spark/ml/param/shared/HasOutputCol.html "interface in org.apache.spark.ml.param.shared")` Returns: (undocumented) * #### inputCol public final [Param](../../../../../org/apache/spark/ml/param/Param.html "class in org.apache.spark.ml.param")<String> inputCol() Description copied from interface: `[HasInputCol](../../../../../org/apache/spark/ml/param/shared/HasInputCol.html#inputCol--)` Param for input column name. Specified by: `[inputCol](../../../../../org/apache/spark/ml/param/shared/HasInputCol.html#inputCol--)` in interface `[HasInputCol](../../../../../org/apache/spark/ml/param/shared/HasInputCol.html "interface in org.apache.spark.ml.param.shared")` Returns: (undocumented) * #### uid public String uid() An immutable unique ID for the object and its derivatives. Specified by: `[uid](../../../../../org/apache/spark/ml/util/Identifiable.html#uid--)` in interface `[Identifiable](../../../../../org/apache/spark/ml/util/Identifiable.html "interface in org.apache.spark.ml.util")` Returns: (undocumented) * #### setInputCol public [MaxAbsScaler](../../../../../org/apache/spark/ml/feature/MaxAbsScaler.html "class in org.apache.spark.ml.feature") setInputCol(String value) * #### setOutputCol public [MaxAbsScaler](../../../../../org/apache/spark/ml/feature/MaxAbsScaler.html "class in org.apache.spark.ml.feature") setOutputCol(String value) * #### fit public [MaxAbsScalerModel](../../../../../org/apache/spark/ml/feature/MaxAbsScalerModel.html "class in org.apache.spark.ml.feature") fit([Dataset](../../../../../org/apache/spark/sql/Dataset.html "class in org.apache.spark.sql")<?> dataset) Description copied from class: `[Estimator](../../../../../org/apache/spark/ml/Estimator.html#fit-org.apache.spark.sql.Dataset-)` Fits a model to the input data. Specified by: `[fit](../../../../../org/apache/spark/ml/Estimator.html#fit-org.apache.spark.sql.Dataset-)` in class `[Estimator](../../../../../org/apache/spark/ml/Estimator.html "class in org.apache.spark.ml")<[MaxAbsScalerModel](../../../../../org/apache/spark/ml/feature/MaxAbsScalerModel.html "class in org.apache.spark.ml.feature")>` Parameters: `dataset` \- (undocumented) Returns: (undocumented) * #### transformSchema public [StructType](../../../../../org/apache/spark/sql/types/StructType.html "class in org.apache.spark.sql.types") transformSchema([StructType](../../../../../org/apache/spark/sql/types/StructType.html "class in org.apache.spark.sql.types") schema) Check transform validity and derive the output schema from the input schema. We check validity for interactions between parameters during `transformSchema` and raise an exception if any parameter value is invalid. Parameter value checks which do not depend on other parameters are handled by `Param.validate()`. Typical implementation should first conduct verification on schema change and parameter validity, including complex parameter interaction checks. Specified by: `[transformSchema](../../../../../org/apache/spark/ml/PipelineStage.html#transformSchema-org.apache.spark.sql.types.StructType-)` in class `[PipelineStage](../../../../../org/apache/spark/ml/PipelineStage.html "class in org.apache.spark.ml")` Parameters: `schema` \- (undocumented) Returns: (undocumented) * #### copy public [MaxAbsScaler](../../../../../org/apache/spark/ml/feature/MaxAbsScaler.html "class in org.apache.spark.ml.feature") copy([ParamMap](../../../../../org/apache/spark/ml/param/ParamMap.html "class in org.apache.spark.ml.param") extra) Description copied from interface: `[Params](../../../../../org/apache/spark/ml/param/Params.html#copy-org.apache.spark.ml.param.ParamMap-)` 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 `defaultCopy()`. Specified by: `[copy](../../../../../org/apache/spark/ml/param/Params.html#copy-org.apache.spark.ml.param.ParamMap-)` in interface `[Params](../../../../../org/apache/spark/ml/param/Params.html "interface in org.apache.spark.ml.param")` Specified by: `[copy](../../../../../org/apache/spark/ml/Estimator.html#copy-org.apache.spark.ml.param.ParamMap-)` in class `[Estimator](../../../../../org/apache/spark/ml/Estimator.html "class in org.apache.spark.ml")<[MaxAbsScalerModel](../../../../../org/apache/spark/ml/feature/MaxAbsScalerModel.html "class in org.apache.spark.ml.feature")>` Parameters: `extra` \- (undocumented) Returns: (undocumented)