Field Detail

• numRows

  protected int numRows

  number of rows

• numColumns

  protected int numColumns

  number of columns

• MATRIX_TYPE_ZERO

  public static final char MATRIX_TYPE_ZERO

  zero matrix

  See Also:

  Constant Field Values

• MATRIX_TYPE_UNIT

  public static final char MATRIX_TYPE_UNIT

  unit matrix

  See Also:

  Constant Field Values

• MATRIX_TYPE_RANDOM_LT

  public static final char MATRIX_TYPE_RANDOM_LT

  random lower triangular matrix

  See Also:

  Constant Field Values

• MATRIX_TYPE_RANDOM_UT

  public static final char MATRIX_TYPE_RANDOM_UT

  random upper triangular matrix

  See Also:

  Constant Field Values

• MATRIX_TYPE_RANDOM_REGULAR

  public static final char MATRIX_TYPE_RANDOM_REGULAR

  random regular matrix

  See Also:

  Constant Field Values

Constructor Detail

• Matrix

  public Matrix()

Method Detail

• getNumRows

  public int getNumRows()

  Returns:

  the number of rows in the matrix

• getNumColumns

  public int getNumColumns()

  Returns:

  the number of columns in the binary matrix

• getEncoded

  public abstract byte[] getEncoded()

  Returns:

  the encoded matrix, i.e., this matrix in byte array form.

• computeInverse

  public abstract Matrix computeInverse()

  Compute the inverse of this matrix.

  Returns:

  the inverse of this matrix (newly created).

• isZero

  public abstract boolean isZero()

  Check if this is the zero matrix (i.e., all entries are zero).

  Returns:

  true if this is the zero matrix

• rightMultiply

  public abstract Matrix rightMultiply​(Matrix a)

  Compute the product of this matrix and another matrix.

  Parameters:

  a - the other matrix

  Returns:

  this * a (newly created)

• rightMultiply

  public abstract Matrix rightMultiply​(Permutation p)

  Compute the product of this matrix and a permutation.

  Parameters:

  p - the permutation

  Returns:

  this * p (newly created)

• leftMultiply

  public abstract Vector leftMultiply​(Vector vector)

  Compute the product of a vector and this matrix. If the length of the vector is greater than the number of rows of this matrix, the matrix is multiplied by each m-bit part of the vector.

  Parameters:

  vector - a vector

  Returns:

  vector * this (newly created)

• rightMultiply

  public abstract Vector rightMultiply​(Vector vector)

  Compute the product of this matrix and a vector.

  Parameters:

  vector - a vector

  Returns:

  this * vector (newly created)

• toString

  public abstract java.lang.String toString()

  Overrides:

  toString in class java.lang.Object

  Returns:

  a human readable form of the matrix.