Class

com.microsoft.ml.spark.vw.featurizer

MapStringFeaturizer

Related Doc: package featurizer

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class MapStringFeaturizer extends Featurizer

Featurize map strings into native VW structure. (hash(column name + k + v):1)

Linear Supertypes
Featurizer, Serializable, Serializable, AnyRef, Any
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Inherited
  1. MapStringFeaturizer
  2. Featurizer
  3. Serializable
  4. Serializable
  5. AnyRef
  6. Any
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Visibility
  1. Public
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Instance Constructors

  1. new MapStringFeaturizer(fieldIdx: Int, columnName: String, namespaceHash: Int, mask: Int)

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    fieldIdx

    input field index.

    columnName

    ignored.

    namespaceHash

    pre-hashed namespace.

    mask

    bit mask applied to final hash.

Value Members

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

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    Definition Classes
    AnyRef → Any

  2. final def ##(): Int

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    Definition Classes
    AnyRef → Any

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

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    Definition Classes
    AnyRef → Any

  4. final def asInstanceOf[T0]: T0

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    Definition Classes
    Any

  5. def clone(): AnyRef

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

  6. val columnName: String

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    ignored.

    ignored.

    Definition Classes
    MapStringFeaturizer → Featurizer

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

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    Definition Classes
    AnyRef

  8. def equals(arg0: Any): Boolean

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    Definition Classes
    AnyRef → Any

  9. def featurize(row: Row, indices: ArrayBuilder[Int], values: ArrayBuilder[Double]): Unit

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    Featurize a single row.

    Featurize a single row.

    row

    input row.

    indices

    output indices.

    values

    output values.

    Definition Classes
    MapStringFeaturizer → Featurizer
    Note

    this interface isn't very Scala idiomatic, but it avoids lots of allocation. Also due to SparseVector limitations we don't support 64bit indices (e.g. indices are signed 32bit ints)

  10. val fieldIdx: Int

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    input field index.

    input field index.

    Definition Classes
    MapStringFeaturizer → Featurizer

  11. def finalize(): Unit

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

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

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    Definition Classes
    AnyRef → Any

  13. def hashCode(): Int

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    Definition Classes
    AnyRef → Any

  14. lazy val hasher: VowpalWabbitMurmurWithPrefix

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    Initialize hasher that already pre-hashes the column prefix.

    Initialize hasher that already pre-hashes the column prefix.

    Attributes
    protected
    Definition Classes
    Featurizer

  15. final def isInstanceOf[T0]: Boolean

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    Definition Classes
    Any

  16. val mask: Int

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    bit mask applied to final hash.

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

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    Definition Classes
    AnyRef

  18. final def notify(): Unit

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    Definition Classes
    AnyRef

  19. final def notifyAll(): Unit

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    Definition Classes
    AnyRef

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

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    Definition Classes
    AnyRef

  21. def toString(): String

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    Definition Classes
    AnyRef → Any

  22. final def wait(): Unit

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    Definition Classes
    AnyRef
    Annotations
    @throws( ... )

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

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    Definition Classes
    AnyRef
    Annotations
    @throws( ... )

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

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    Definition Classes
    AnyRef
    Annotations
    @throws( ... )

Inherited from Featurizer

Inherited from Serializable

Inherited from Serializable

Inherited from AnyRef

Inherited from Any

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