edu.ucla.sspace.matrix

Class SvdlibjDriver

java.lang.Object

edu.ucla.sspace.matrix.SvdlibjDriver

public class SvdlibjDriver
extends Object

A wrapper around SVDLIBJ that allows Matrix objects and arbitrarily formatted matrix files to use the SVDLIBJ library. The SVDLIBJ library was written by Adrian Kuhn and David Erni and is a direct Java port of Doug Rohde's SVDLIBC library, which is itself a C port of the FORTRAN SVDPAKC code.

Author:

David Jurgens

See Also:

SVD

Method Summary

Methods

Modifier and Type	Method and Description
static Matrix[]	svd(File matrix, MatrixIO.Format format, int dimensions) Computes the SVD of the matrix in the provided file in the specified format.
static Matrix[]	svd(Matrix m, int dimensions) Computes the SVD of the matrix.

Methods inherited from class java.lang.Object

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

Method Detail

svd

public static Matrix[] svd(Matrix m,
           int dimensions)

Computes the SVD of the matrix.

Parameters:

m - the matrix to be decomposed

dimensions - the number of singular values to return

Returns:

the decomposed matrices: U, S, V^T in that order.

svd

public static Matrix[] svd(File matrix,
           MatrixIO.Format format,
           int dimensions)
                    throws IOException

Computes the SVD of the matrix in the provided file in the specified format.

Parameters:

matrix - the file containing the matrix to be decomposed

format - the format of the data in the file

dimensions - the number of singular values to return

Returns:

the decomposed matrices: U, S, V^T in that order.

Throws:

IOException