ml.dmlc.xgboost4j.scala

DMatrix

Related Doc: package scala

class DMatrix extends AnyRef

Linear Supertypes
AnyRef, Any
Ordering
  1. Alphabetic
  2. By Inheritance
Inherited
  1. DMatrix
  2. AnyRef
  3. Any
  1. Hide All
  2. Show All
Visibility
  1. Public
  2. All

Instance Constructors

  1. new DMatrix(data: Array[Float], nrow: Int, ncol: Int, missing: Float)

    create DMatrix from dense matrix

    create DMatrix from dense matrix

    data

    data values

    nrow

    number of rows

    ncol

    number of columns

    missing

    the specified value to represent the missing value

    Annotations
    @throws( classOf[XGBoostError] )

  2. new DMatrix(data: Array[Float], nrow: Int, ncol: Int)

    create DMatrix from dense matrix

    create DMatrix from dense matrix

    data

    data values

    nrow

    number of rows

    ncol

    number of columns

    Annotations
    @throws( classOf[XGBoostError] )

  3. new DMatrix(headers: Array[Long], indices: Array[Int], data: Array[Float], st: SparseType, shapeParam: Int)

    create DMatrix from sparse matrix

    create DMatrix from sparse matrix

    headers

    index to headers (rowHeaders for CSR or colHeaders for CSC)

    indices

    Indices (colIndexs for CSR or rowIndexs for CSC)

    data

    non zero values (sequence by row for CSR or by col for CSC)

    st

    sparse matrix type (CSR or CSC)

    shapeParam

    when st is CSR, it specifies the column number, otherwise it is taken as row number

    Annotations
    @throws( classOf[XGBoostError] )

  4. new DMatrix(dataIter: Iterator[LabeledPoint], cacheInfo: String = null)

    init DMatrix from Iterator of LabeledPoint

    init DMatrix from Iterator of LabeledPoint

    dataIter

    An iterator of LabeledPoint

    cacheInfo

    Cache path information, used for external memory setting, null by default.

    Exceptions thrown

    XGBoostError native error

  5. new DMatrix(dataPath: String)

    init DMatrix from file (svmlight format)

    init DMatrix from file (svmlight format)

    dataPath

    path of data file

    Exceptions thrown

    XGBoostError native error

  6. new DMatrix(headers: Array[Long], indices: Array[Int], data: Array[Float], st: SparseType)

    create DMatrix from sparse matrix

    create DMatrix from sparse matrix

    headers

    index to headers (rowHeaders for CSR or colHeaders for CSC)

    indices

    Indices (colIndexs for CSR or rowIndexs for CSC)

    data

    non zero values (sequence by row for CSR or by col for CSC)

    st

    sparse matrix type (CSR or CSC)

    Annotations
    @throws( classOf[XGBoostError] ) @deprecated
    Deprecated

Value Members

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

    Definition Classes
    AnyRef → Any

  2. final def ##(): Int

    Definition Classes
    AnyRef → Any

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

    Definition Classes
    AnyRef → Any

  4. final def asInstanceOf[T0]: T0

    Definition Classes
    Any

  5. def clone(): AnyRef

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

  6. def delete(): Unit

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

    Definition Classes
    AnyRef

  8. def equals(arg0: Any): Boolean

    Definition Classes
    AnyRef → Any

  9. def finalize(): Unit

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

  10. def getBaseMargin: Array[Float]

    get base margin of the DMatrix

    get base margin of the DMatrix

    returns

    base margin

    Annotations
    @throws( classOf[XGBoostError] )

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

    Definition Classes
    AnyRef → Any

  12. def getHandle: Long

  13. def getLabel: Array[Float]

    get label values

    get label values

    returns

    label

    Annotations
    @throws( classOf[XGBoostError] )

  14. def getWeight: Array[Float]

    get weight of the DMatrix

    get weight of the DMatrix

    returns

    weights

    Annotations
    @throws( classOf[XGBoostError] )

  15. def hashCode(): Int

    Definition Classes
    AnyRef → Any

  16. final def isInstanceOf[T0]: Boolean

    Definition Classes
    Any

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

    Definition Classes
    AnyRef

  18. final def notify(): Unit

    Definition Classes
    AnyRef

  19. final def notifyAll(): Unit

    Definition Classes
    AnyRef

  20. def rowNum: Long

    get the row number of DMatrix

    get the row number of DMatrix

    returns

    number of rows

    Annotations
    @throws( classOf[XGBoostError] )

  21. def saveBinary(filePath: String): Unit

    save DMatrix to filePath

    save DMatrix to filePath

    filePath

    file path

  22. def setBaseMargin(baseMargin: Array[Array[Float]]): Unit

    if specified, xgboost will start from this init margin can be used to specify initial prediction to boost from

    if specified, xgboost will start from this init margin can be used to specify initial prediction to boost from

    baseMargin

    base margin

    Annotations
    @throws( classOf[XGBoostError] )

  23. def setBaseMargin(baseMargin: Array[Float]): Unit

    if specified, xgboost will start from this init margin can be used to specify initial prediction to boost from

    if specified, xgboost will start from this init margin can be used to specify initial prediction to boost from

    baseMargin

    base margin

    Annotations
    @throws( classOf[XGBoostError] )

  24. def setGroup(group: Array[Int]): Unit

    Set group sizes of DMatrix (used for ranking)

    Set group sizes of DMatrix (used for ranking)

    group

    group size as array

    Annotations
    @throws( classOf[XGBoostError] )

  25. def setLabel(labels: Array[Float]): Unit

    set label of dmatrix

    set label of dmatrix

    labels

    labels

    Annotations
    @throws( classOf[XGBoostError] )

  26. def setWeight(weights: Array[Float]): Unit

    set weight of each instance

    set weight of each instance

    weights

    weights

    Annotations
    @throws( classOf[XGBoostError] )

  27. def slice(rowIndex: Array[Int]): DMatrix

    Slice the DMatrix and return a new DMatrix that only contains rowIndex.

    Slice the DMatrix and return a new DMatrix that only contains rowIndex.

    rowIndex

    row index

    returns

    sliced new DMatrix

    Annotations
    @throws( classOf[XGBoostError] )

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

    Definition Classes
    AnyRef

  29. def toString(): String

    Definition Classes
    AnyRef → Any

  30. final def wait(): Unit

    Definition Classes
    AnyRef
    Annotations
    @throws( ... )

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

    Definition Classes
    AnyRef
    Annotations
    @throws( ... )

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

    Definition Classes
    AnyRef
    Annotations
    @throws( ... )

Inherited from AnyRef

Inherited from Any

Ungrouped