nak.cluster

PcaTransformer

class PcaTransformer extends PointTransformer

A transformer that scales a set of points, maps them into a PCA space, and then reduces the dimensionality by retaining only the top components.

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PointTransformer, (IndexedSeq[Point]) ⇒ IndexedSeq[Point], AnyRef, Any
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Instance Constructors

  1. new PcaTransformer(pca: PCA, scaler: ZscoreTransformer, numComponents: Int)

    pca

    A PCA object that holds the data structures needed for mapping points to the PCA space.

    scaler

    A point transformer that will scale the points before being passed on to the PCA. For now, only a ZscoreTransformer is used.

    numComponents

    The number of principal components to keep. Components are ranked according to the amount of variance they explain, so the most important dimensions are kept.

Value Members

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

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

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  3. final def ##(): Int

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

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

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  6. def andThen[A](g: (IndexedSeq[Point]) ⇒ A): (IndexedSeq[Point]) ⇒ A

    Definition Classes
    Function1
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    @unspecialized()

  7. def apply(points: IndexedSeq[Point]): IndexedSeq[Point]

    Transform a sequence of point to their z-score values, thereby scaling the dataset, and then transform them into principal components space, and finally, reduce their dimensionality by taking the top dimensions.

    Transform a sequence of point to their z-score values, thereby scaling the dataset, and then transform them into principal components space, and finally, reduce their dimensionality by taking the top dimensions.

    Definition Classes
    PcaTransformer → Function1

  8. final def asInstanceOf[T0]: T0

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  9. def clone(): AnyRef

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    protected[java.lang]
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    @throws()

  10. def compose[A](g: (A) ⇒ IndexedSeq[Point]): (A) ⇒ IndexedSeq[Point]

    Definition Classes
    Function1
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    @unspecialized()

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

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  12. def equals(arg0: Any): Boolean

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  13. def finalize(): Unit

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

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  15. def hashCode(): Int

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  16. final def isInstanceOf[T0]: Boolean

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

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  18. final def notify(): Unit

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  19. final def notifyAll(): Unit

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

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  21. def toString(): String

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  22. final def wait(): Unit

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

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

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Inherited from PointTransformer

Inherited from (IndexedSeq[Point]) ⇒ IndexedSeq[Point]

Inherited from AnyRef

Inherited from Any

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