org.ranksys.formats.factorization

Class SimpleFactorizationFormat

java.lang.Object

org.ranksys.formats.factorization.SimpleFactorizationFormat

All Implemented Interfaces:

FactorizationFormat

public class SimpleFactorizationFormat
extends Object
implements FactorizationFormat

Zip-compressed, human readable matrix factorisation format.

Author:

Saúl Vargas (Saul@VargasSandoval.es)

Method Summary

Modifier and Type	Method and Description
static SimpleFactorizationFormat	get() Returns an instance of this class.
<U,I> Factorization<U,I>	load(InputStream in, FastUserIndex<U> uIndex, FastItemIndex<I> iIndex) Loads a matrix from a compressed input stream.
<U,I> void	save(Factorization<U,I> factorization, OutputStream out) Saves this matrix factorization to a compressed output stream.

Methods inherited from class java.lang.Object

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

Method Detail

get

public static SimpleFactorizationFormat get()

Returns an instance of this class.

Returns:

an instance of SimpleFactorizationFormat

save

public <U,I> void save(Factorization<U,I> factorization,
                       OutputStream out)
                throws IOException

Description copied from interface: FactorizationFormat

Saves this matrix factorization to a compressed output stream.

Specified by:

save in interface FactorizationFormat

Type Parameters:

U - type of the users

I - type of the items

Parameters:

factorization - factorization

out - output stream

Throws:

IOException - when IO error

load

public <U,I> Factorization<U,I> load(InputStream in,
                                     FastUserIndex<U> uIndex,
                                     FastItemIndex<I> iIndex)
                              throws IOException

Description copied from interface: FactorizationFormat

Loads a matrix from a compressed input stream.

Specified by:

load in interface FactorizationFormat

Type Parameters:

U - type of the users

I - type of the items

Parameters:

in - input stream

uIndex - fast user index

iIndex - fast item index

Returns:

a factorization

Throws:

IOException - when IO error