Field Detail

• rows

  private final int rows

• cols

  private final int cols

• rowTransform

  private final int[] rowTransform

• rowInverse

  private final int[] rowInverse

• colTransform

  private final int[] colTransform

• colInverse

  private final int[] colInverse

Constructor Detail

• RegionPlacementMaintainer.RandomizedMatrix

  public RegionPlacementMaintainer.RandomizedMatrix(int rows,
                                            int cols)

  Create a randomization scheme for a matrix of a given size.

  Parameters:

  rows - the number of rows in the matrix

  cols - the number of columns in the matrix

Method Detail

• transform

  public float[][] transform(float[][] matrix)

  Copy a given matrix into a new matrix, transforming each row index and each column index according to the randomization scheme that was created at construction time.

  Parameters:

  matrix - the cost matrix to transform

  Returns:

  a new matrix with row and column indices transformed

• invert

  public float[][] invert(float[][] matrix)

  Copy a given matrix into a new matrix, transforming each row index and each column index according to the inverse of the randomization scheme that was created at construction time.

  Parameters:

  matrix - the cost matrix to be inverted

  Returns:

  a new matrix with row and column indices inverted

• invertIndices

  public int[] invertIndices(int[] indices)

  Given an array where each element indices[i] represents the randomized column index corresponding to randomized row index i, create a new array with the corresponding inverted indices.

  Parameters:

  indices - an array of transformed indices to be inverted

  Returns:

  an array of inverted indices