package dragon.matrix.factorize;import dragon.matrix.*;/** * <p>Interface of matrix factorization</p> * <p></p> * <p>Copyright: Copyright (c) 2005</p> * <p>Company: IST, Drexel University</p> * @author Davis Zhou * @version 1.0 */public interface Factorization {    /**     * Factorizes the given matrix     * @param matrix the matrix for factorization     * @param dimension the number of dimensions for the middle matrix     */    public void factorize(SparseMatrix matrix, int dimension);    /**     * Gets the left matrix     * @return the left matrix     */    public DoubleDenseMatrix getLeftMatrix();    /**     *Gets the right matrix     * @return the right matrix     */    public DoubleDenseMatrix getRightMatrix();    /**     * Gets the middle matrix     * @return the middle matrix     */    public DoubleDenseMatrix getMiddleMatrix();}