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Showing content from http://spark.apache.org/docs/latest/api/scala/org/apache/spark/ml/feature/FeatureHasher.html below:

Spark 4.0.0 ScalaDoc - org.apache.spark.ml.feature.FeatureHasher

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1. Grouped
2. Alphabetic
3. By Inheritance

1. FeatureHasher
2. DefaultParamsWritable
3. MLWritable
4. HasNumFeatures
5. HasOutputCol
6. HasInputCols
7. Transformer
8. PipelineStage
9. Logging
10. Params
11. Serializable
12. Identifiable
13. AnyRef
14. Any

1. Public
2. Protected

1.  new FeatureHasher()
2.  new FeatureHasher(uid: String)

1.  implicit class LogStringContext extends AnyRef

1.  final def !=(arg0: Any): Boolean
2.  final def ##: Int
3.  final def $[T](param: Param[T]): T
4.  final def ==(arg0: Any): Boolean
5.  final def asInstanceOf[T0]: T0
6.  val categoricalCols: StringArrayParam
7.  final def clear(param: Param[_]): FeatureHasher.this.type
8.  def clone(): AnyRef
9.  def copy(extra: ParamMap): FeatureHasher
10.  def copyValues[T <: Params](to: T, extra: ParamMap = ParamMap.empty): T
11.  final def defaultCopy[T <: Params](extra: ParamMap): T
12.  final def eq(arg0: AnyRef): Boolean
13.  def equals(arg0: AnyRef): Boolean
14.  def explainParam(param: Param[_]): String
15.  def explainParams(): String
16.  final def extractParamMap(): ParamMap
17.  final def extractParamMap(extra: ParamMap): ParamMap
18.  final def get[T](param: Param[T]): Option[T]
19.  def getCategoricalCols: Array[String]
20.  final def getClass(): Class[_ <: AnyRef]
21.  final def getDefault[T](param: Param[T]): Option[T]
22.  final def getInputCols: Array[String]
23.  final def getNumFeatures: Int
24.  final def getOrDefault[T](param: Param[T]): T
25.  final def getOutputCol: String
26.  def getParam(paramName: String): Param[Any]
27.  final def hasDefault[T](param: Param[T]): Boolean
28.  def hasParam(paramName: String): Boolean
29.  def hashCode(): Int
30.  def initializeLogIfNecessary(isInterpreter: Boolean, silent: Boolean): Boolean
31.  def initializeLogIfNecessary(isInterpreter: Boolean): Unit
32.  final val inputCols: StringArrayParam
33.  final def isDefined(param: Param[_]): Boolean
34.  final def isInstanceOf[T0]: Boolean
35.  final def isSet(param: Param[_]): Boolean
36.  def isTraceEnabled(): Boolean
37.  def log: Logger
38.  def logDebug(msg: => String, throwable: Throwable): Unit
39.  def logDebug(entry: LogEntry, throwable: Throwable): Unit
40.  def logDebug(entry: LogEntry): Unit
41.  def logDebug(msg: => String): Unit
42.  def logError(msg: => String, throwable: Throwable): Unit
43.  def logError(entry: LogEntry, throwable: Throwable): Unit
44.  def logError(entry: LogEntry): Unit
45.  def logError(msg: => String): Unit
46.  def logInfo(msg: => String, throwable: Throwable): Unit
47.  def logInfo(entry: LogEntry, throwable: Throwable): Unit
48.  def logInfo(entry: LogEntry): Unit
49.  def logInfo(msg: => String): Unit
50.  def logName: String
51.  def logTrace(msg: => String, throwable: Throwable): Unit
52.  def logTrace(entry: LogEntry, throwable: Throwable): Unit
53.  def logTrace(entry: LogEntry): Unit
54.  def logTrace(msg: => String): Unit
55.  def logWarning(msg: => String, throwable: Throwable): Unit
56.  def logWarning(entry: LogEntry, throwable: Throwable): Unit
57.  def logWarning(entry: LogEntry): Unit
58.  def logWarning(msg: => String): Unit
59.  final def ne(arg0: AnyRef): Boolean
60.  final def notify(): Unit
61.  final def notifyAll(): Unit
62.  final val numFeatures: IntParam
63.  final val outputCol: Param[String]
64.  lazy val params: Array[Param[_]]
65.  def save(path: String): Unit
66.  final def set(paramPair: ParamPair[_]): FeatureHasher.this.type
67.  final def set(param: String, value: Any): FeatureHasher.this.type
68.  final def set[T](param: Param[T], value: T): FeatureHasher.this.type
69.  def setCategoricalCols(value: Array[String]): FeatureHasher.this.type
70.  final def setDefault(paramPairs: ParamPair[_]*): FeatureHasher.this.type
71.  final def setDefault[T](param: Param[T], value: T): FeatureHasher.this.type
72.  def setInputCols(value: Array[String]): FeatureHasher.this.type
73.  def setInputCols(values: String*): FeatureHasher.this.type
74.  def setNumFeatures(value: Int): FeatureHasher.this.type
75.  def setOutputCol(value: String): FeatureHasher.this.type
76.  final def synchronized[T0](arg0: => T0): T0
77.  def toString(): String
78.  def transform(dataset: Dataset[_]): DataFrame
79.  def transform(dataset: Dataset[_], paramMap: ParamMap): DataFrame
80.  def transform(dataset: Dataset[_], firstParamPair: ParamPair[_], otherParamPairs: ParamPair[_]*): DataFrame
81.  def transformSchema(schema: StructType): StructType
82.  def transformSchema(schema: StructType, logging: Boolean): StructType
83.  val uid: String
84.  final def wait(arg0: Long, arg1: Int): Unit
85.  final def wait(arg0: Long): Unit
86.  final def wait(): Unit
87.  def withLogContext(context: Map[String, String])(body: => Unit): Unit
88.  def write: MLWriter

1.  def finalize(): Unit

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