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The following page has been changed by udanax: http://wiki.apache.org/hama/InterfaceConsiderations ------------------------------------------------------------------------------ + == Vector == + {{{ /** * Basic vector interface. @@ -85, +87 @@ }}} + == Matrix == + + {{{ + + /** + * Basic matrix interface. + */ + public interface MatrixInterface { + + /** + * @param i ith row of the matrix + * @param j jth column of the matrix + * @return A(i, j) + */ + public double get(int i, int j); + + /** + * Get a number of row of the matrix + * + * @return a number of rows of the matrix + */ + public int getRows(); + + /** + * Get a number of column of the matrix + * + * @return a number of columns of the matrix + */ + public int getColumns(); + + /** + * A(i, j) = value + * + * @param i ith row of the matrix + * @param j jth column of the matrix + * @param value the value of entry + */ + public void set(int i, int j, double value); + + /** + * A=alpha*B + * + * @param alpha + * @param B + * @return A + */ + public Matrix set(double alpha, Matrix B); + + /** + * A=B + * + * @param B + * @return A + */ + public Matrix set(Matrix B); + + /** + * A(row,column) += value + * + * @param row + * @param column + * @param value + */ + public void add(int row, int column, double value); + + /** + * A = B + A + * + * @param B + * @return + */ + public Matrix add(Matrix B); + + /** + * A = alpha*B + A + * + * @param alpha + * @param B + * @return A + */ + public Matrix add(double alpha, Matrix B); + + /** + * C = A*B + * + * @param B + * @return C + */ + public Matrix mult(Matrix B); + + /** + * Computes the given norm of the matrix + * + * @param type + * @return norm of the matrix + */ + public double norm(Matrix.Norm type); + } + }}} +
