Package de.jungblut.math.minimize

Class DenseMatrixFolder

  • public abstract class DenseMatrixFolder
extends java.lang.Object

    • Method Summary

      All Methods Static Methods Concrete Methods 
      Modifier and Type Method Description
      static de.jungblut.math.DoubleVector foldMatrices​(de.jungblut.math.DoubleMatrix... matrices)
      Folds the given matrices column-wise into a single vector.
      static de.jungblut.math.DoubleVector foldMatrix​(de.jungblut.math.DoubleMatrix mat)
      Folds a single matrix into a single vector by rows.
      static de.jungblut.math.DoubleMatrix[] unfoldMatrices​(de.jungblut.math.DoubleVector vector, int[][] sizeArray)
      Unfolds a vector into matrices by the rules defined in the sizeArray.
      static de.jungblut.math.DoubleMatrix unfoldMatrix​(de.jungblut.math.DoubleVector vector, int rows, int cols)
      Unfolds a single vector into a single matrix by rows.

      • Methods inherited from class java.lang.Object

        clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

    • Constructor Detail

      • DenseMatrixFolder

        public DenseMatrixFolder()

    • Method Detail

      • foldMatrices

        public static de.jungblut.math.DoubleVector foldMatrices​(de.jungblut.math.DoubleMatrix... matrices)
        Folds the given matrices column-wise into a single vector.

      • unfoldMatrices

        public static de.jungblut.math.DoubleMatrix[] unfoldMatrices​(de.jungblut.math.DoubleVector vector,
                                                             int[][] sizeArray)
        Unfolds a vector into matrices by the rules defined in the sizeArray. The sizeArray must have following format: in each row the row and column count must be provided.
        Example: sizeArray = {{2,3},{3,2}} will unfold into matrix 0 with 2 rows and 3 columns and matrix 1 with 3 rows and 2 columns.

      • unfoldMatrix

        public static de.jungblut.math.DoubleMatrix unfoldMatrix​(de.jungblut.math.DoubleVector vector,
                                                         int rows,
                                                         int cols)
        Unfolds a single vector into a single matrix by rows.
        Parameters:
        vector - the vector to split.
        rows - the number of rows the target matrix needs to have.
        cols - the number of columns the target matrix needs to have.
        Returns:
        a matrix with the contents of the vector, row split.

      • foldMatrix

        public static de.jungblut.math.DoubleVector foldMatrix​(de.jungblut.math.DoubleMatrix mat)
        Folds a single matrix into a single vector by rows.