Package org.apache.sysds.runtime.compress.colgroup

Interface ColGroupUtils

  • public interface ColGroupUtils

    • Method Detail

      • binaryDefRowLeft

        static double[] binaryDefRowLeft​(BinaryOperator op,
                                 double[] v,
                                 IColIndex colIndexes)
        Calculate the result of performing the binary operation on an empty row to the left v op empty
        Parameters:
        op - The operator
        v - The values to use on the left side of the operator
        colIndexes - The column indexes to extract
        Returns:
        The result as a double array.

      • binaryDefRowRight

        static double[] binaryDefRowRight​(BinaryOperator op,
                                  double[] v,
                                  IColIndex colIndexes)
        Calculate the result of performing the binary operation on an empty row to the right empty op v
        Parameters:
        op - The operator
        v - The values to use on the left side of the operator
        colIndexes - The column indexes to extract
        Returns:
        The result as a double array.

      • copyValuesColGroupMatrixBlocks

        static void copyValuesColGroupMatrixBlocks​(AColGroup lhs,
                                           AColGroup rhs,
                                           MatrixBlock tmpResult,
                                           MatrixBlock result)
        Copy values from tmpResult into correct positions of result (according to colIndexes in lhs and rhs)
        Parameters:
        lhs - Left ColumnGroup
        rhs - Right ColumnGroup
        tmpResult - The matrix block to move values from
        result - The result matrix block to move values to

      • extractMostCommonValueInColumns

        static double[] extractMostCommonValueInColumns​(MatrixBlock mb)

      • refSum

        static double refSum​(double[] reference)

      • refSumSq

        static double refSumSq​(double[] reference)

      • allZero

        static boolean allZero​(double[] in)

      • containsInfOrNan

        static boolean containsInfOrNan​(double pattern,
                                double[] reference)

      • createReference

        static double[] createReference​(int nCol,
                                double val)

      • unaryOperator

        static double[] unaryOperator​(UnaryOperator op,
                              double[] reference)

      • outerProduct

        static void outerProduct​(double[] leftRowSum,
                         double[] rightColumnSum,
                         double[] result,
                         int rl,
                         int ru)

      • outerProduct

        static void outerProduct​(double[] leftRowSum,
                         double[] rightColumnSum,
                         IColIndex colIdxRight,
                         double[] result,
                         int nColR,
                         int rl,
                         int ru)

      • outerProduct

        static void outerProduct​(double[] leftRowSum,
                         SparseBlock rightColSum,
                         IColIndex colIdxRight,
                         double[] result,
                         int nColR,
                         int rl,
                         int ru)

      • reorderDefault

        static double[] reorderDefault​(double[] vals,
                               int[] reordering)