Class/Object

org.apache.spark.ml.linalg

DenseMatrix

Related Docs: object DenseMatrix | package linalg

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class DenseMatrix extends Matrix

Column-major dense matrix. The entry values are stored in a single array of doubles with columns listed in sequence. For example, the following matrix

1.0 2.0
3.0 4.0
5.0 6.0

is stored as [1.0, 3.0, 5.0, 2.0, 4.0, 6.0].

Annotations
@Since( "2.0.0" )
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Matrix, Serializable, Serializable, AnyRef, Any
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  2. Matrix
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Instance Constructors

  1. new DenseMatrix(numRows: Int, numCols: Int, values: Array[Double])

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    Column-major dense matrix.

    Column-major dense matrix. The entry values are stored in a single array of doubles with columns listed in sequence. For example, the following matrix

    1.0 2.0
    3.0 4.0
    5.0 6.0

    is stored as [1.0, 3.0, 5.0, 2.0, 4.0, 6.0].

    numRows

    number of rows

    numCols

    number of columns

    values

    matrix entries in column major

    Annotations
    @Since( "2.0.0" )
  2. new DenseMatrix(numRows: Int, numCols: Int, values: Array[Double], isTransposed: Boolean)

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    numRows

    number of rows

    numCols

    number of columns

    values

    matrix entries in column major if not transposed or in row major otherwise

    isTransposed

    whether the matrix is transposed. If true, values stores the matrix in row major.

    Annotations
    @Since( "2.0.0" )

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. def apply(i: Int, j: Int): Double

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    Gets the (i, j)-th element.

    Gets the (i, j)-th element.

    Definition Classes
    DenseMatrixMatrix
  5. final def asInstanceOf[T0]: T0

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    Definition Classes
    Any
  6. def clone(): AnyRef

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    Attributes
    protected[java.lang]
    Definition Classes
    AnyRef
    Annotations
    @throws( ... )
  7. def colIter: Iterator[Vector]

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    Returns an iterator of column vectors.

    Returns an iterator of column vectors. This operation could be expensive, depending on the underlying storage.

    Definition Classes
    DenseMatrixMatrix
  8. def compressed: Matrix

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    Returns a matrix in dense column major, dense row major, sparse row major, or sparse column major format, whichever uses less storage.

    Returns a matrix in dense column major, dense row major, sparse row major, or sparse column major format, whichever uses less storage. When dense representation is optimal, it maintains the current layout order.

    Definition Classes
    Matrix
    Annotations
    @Since( "2.2.0" )
  9. def compressedColMajor: Matrix

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    Returns a matrix in dense or sparse column major format, whichever uses less storage.

    Returns a matrix in dense or sparse column major format, whichever uses less storage.

    Definition Classes
    Matrix
    Annotations
    @Since( "2.2.0" )
  10. def compressedRowMajor: Matrix

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    Returns a matrix in dense or sparse row major format, whichever uses less storage.

    Returns a matrix in dense or sparse row major format, whichever uses less storage.

    Definition Classes
    Matrix
    Annotations
    @Since( "2.2.0" )
  11. def copy: DenseMatrix

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    Get a deep copy of the matrix.

    Get a deep copy of the matrix.

    Definition Classes
    DenseMatrixMatrix
  12. final def eq(arg0: AnyRef): Boolean

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    Definition Classes
    AnyRef
  13. def equals(o: Any): Boolean

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    Definition Classes
    DenseMatrix → AnyRef → Any
  14. def finalize(): Unit

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    Attributes
    protected[java.lang]
    Definition Classes
    AnyRef
    Annotations
    @throws( classOf[java.lang.Throwable] )
  15. def foreachActive(f: (Int, Int, Double) ⇒ Unit): Unit

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    Applies a function f to all the active elements of dense and sparse matrix.

    Applies a function f to all the active elements of dense and sparse matrix. The ordering of the elements are not defined.

    f

    the function takes three parameters where the first two parameters are the row and column indices respectively with the type Int, and the final parameter is the corresponding value in the matrix with type Double.

    Definition Classes
    DenseMatrixMatrix
  16. final def getClass(): Class[_]

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    Definition Classes
    AnyRef → Any
  17. def hashCode(): Int

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    Definition Classes
    DenseMatrix → AnyRef → Any
  18. final def isInstanceOf[T0]: Boolean

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    Definition Classes
    Any
  19. val isTransposed: Boolean

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    whether the matrix is transposed.

    whether the matrix is transposed. If true, values stores the matrix in row major.

    Definition Classes
    DenseMatrixMatrix
  20. def multiply(y: Vector): DenseVector

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    Convenience method for Matrix-Vector multiplication.

    Convenience method for Matrix-Vector multiplication.

    Definition Classes
    Matrix
    Annotations
    @Since( "2.0.0" )
  21. def multiply(y: DenseVector): DenseVector

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    Convenience method for Matrix-DenseVector multiplication.

    Convenience method for Matrix-DenseVector multiplication. For binary compatibility.

    Definition Classes
    Matrix
    Annotations
    @Since( "2.0.0" )
  22. def multiply(y: DenseMatrix): DenseMatrix

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    Convenience method for Matrix-DenseMatrix multiplication.

    Convenience method for Matrix-DenseMatrix multiplication.

    Definition Classes
    Matrix
    Annotations
    @Since( "2.0.0" )
  23. final def ne(arg0: AnyRef): Boolean

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    Definition Classes
    AnyRef
  24. final def notify(): Unit

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    Definition Classes
    AnyRef
  25. final def notifyAll(): Unit

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    Definition Classes
    AnyRef
  26. def numActives: Int

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    Find the number of values stored explicitly.

    Find the number of values stored explicitly. These values can be zero as well.

    Definition Classes
    DenseMatrixMatrix
  27. val numCols: Int

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    number of columns

    number of columns

    Definition Classes
    DenseMatrixMatrix
    Annotations
    @Since( "2.0.0" )
  28. def numNonzeros: Int

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    Find the number of non-zero active values.

    Find the number of non-zero active values.

    Definition Classes
    DenseMatrixMatrix
  29. val numRows: Int

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    number of rows

    number of rows

    Definition Classes
    DenseMatrixMatrix
    Annotations
    @Since( "2.0.0" )
  30. def rowIter: Iterator[Vector]

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    Returns an iterator of row vectors.

    Returns an iterator of row vectors. This operation could be expensive, depending on the underlying storage.

    Definition Classes
    Matrix
    Annotations
    @Since( "2.0.0" )
  31. final def synchronized[T0](arg0: ⇒ T0): T0

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    Definition Classes
    AnyRef
  32. def toArray: Array[Double]

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    Converts to a dense array in column major.

    Converts to a dense array in column major.

    Definition Classes
    Matrix
    Annotations
    @Since( "2.0.0" )
  33. def toDense: DenseMatrix

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    Converts this matrix to a dense matrix while maintaining the layout of the current matrix.

    Converts this matrix to a dense matrix while maintaining the layout of the current matrix.

    Definition Classes
    Matrix
    Annotations
    @Since( "2.2.0" )
  34. def toDenseColMajor: DenseMatrix

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    Converts this matrix to a dense matrix in column major order.

    Converts this matrix to a dense matrix in column major order.

    Definition Classes
    Matrix
    Annotations
    @Since( "2.2.0" )
  35. def toDenseRowMajor: DenseMatrix

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    Converts this matrix to a dense matrix in row major order.

    Converts this matrix to a dense matrix in row major order.

    Definition Classes
    Matrix
    Annotations
    @Since( "2.2.0" )
  36. def toSparse: SparseMatrix

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    Converts this matrix to a sparse matrix while maintaining the layout of the current matrix.

    Converts this matrix to a sparse matrix while maintaining the layout of the current matrix.

    Definition Classes
    Matrix
    Annotations
    @Since( "2.2.0" )
  37. def toSparseColMajor: SparseMatrix

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    Converts this matrix to a sparse matrix in column major order.

    Converts this matrix to a sparse matrix in column major order.

    Definition Classes
    Matrix
    Annotations
    @Since( "2.2.0" )
  38. def toSparseRowMajor: SparseMatrix

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    Converts this matrix to a sparse matrix in row major order.

    Converts this matrix to a sparse matrix in row major order.

    Definition Classes
    Matrix
    Annotations
    @Since( "2.2.0" )
  39. def toString(maxLines: Int, maxLineWidth: Int): String

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    A human readable representation of the matrix with maximum lines and width

    A human readable representation of the matrix with maximum lines and width

    Definition Classes
    Matrix
    Annotations
    @Since( "2.0.0" )
  40. def toString(): String

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    A human readable representation of the matrix

    A human readable representation of the matrix

    Definition Classes
    Matrix → AnyRef → Any
  41. def transpose: DenseMatrix

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    Transpose the Matrix.

    Transpose the Matrix. Returns a new Matrix instance sharing the same underlying data.

    Definition Classes
    DenseMatrixMatrix
  42. val values: Array[Double]

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    matrix entries in column major if not transposed or in row major otherwise

    matrix entries in column major if not transposed or in row major otherwise

    Annotations
    @Since( "2.0.0" )
  43. final def wait(): Unit

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    Definition Classes
    AnyRef
    Annotations
    @throws( ... )
  44. final def wait(arg0: Long, arg1: Int): Unit

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    Definition Classes
    AnyRef
    Annotations
    @throws( ... )
  45. final def wait(arg0: Long): Unit

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    Definition Classes
    AnyRef
    Annotations
    @throws( ... )

Inherited from Matrix

Inherited from Serializable

Inherited from Serializable

Inherited from AnyRef

Inherited from Any

Members