net.librec.data.convertor

Class AbstractDataConvertor

java.lang.Object

net.librec.job.progress.ProgressReporter

net.librec.data.convertor.AbstractDataConvertor

All Implemented Interfaces:

java.lang.Runnable, DataConvertor, Progressable

Direct Known Subclasses:

ArffDataConvertor, TextDataConvertor

public abstract class AbstractDataConvertor
extends ProgressReporter
implements DataConvertor

A AbstractDataConvertor is a class to convert a data file from one source format to a target format.

Author:

WangYuFeng

Field Summary

Fields

Modifier and Type	Field and Description
protected SparseMatrix	datetimeMatrix store time data as {user, item, rate} matrix
protected SparseMatrix	preferenceMatrix store rate data as {user, item, rate} matrix
protected SparseTensor	sparseTensor store rate data as a sparse tensor

Fields inherited from class net.librec.job.progress.ProgressReporter

PROGRESS_INTERVAL

Constructor Summary

Constructors

Constructor and Description
AbstractDataConvertor()

Method Summary

Methods

Modifier and Type	Method and Description
SparseMatrix	getDatetimeMatrix() Return the date matrix.
SparseMatrix	getPreferenceMatrix() Return the rate matrix.
SparseTensor	getSparseTensor() Return the rate tensor.

Methods inherited from class net.librec.job.progress.ProgressReporter

getJobStatus, progressx, run

Methods inherited from class java.lang.Object

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

Methods inherited from interface net.librec.data.DataConvertor

processData

Methods inherited from interface net.librec.job.progress.Progressable

progress

Field Detail

preferenceMatrix

protected SparseMatrix preferenceMatrix

store rate data as {user, item, rate} matrix

datetimeMatrix

protected SparseMatrix datetimeMatrix

store time data as {user, item, rate} matrix

sparseTensor

protected SparseTensor sparseTensor

store rate data as a sparse tensor

Constructor Detail

AbstractDataConvertor

public AbstractDataConvertor()

Method Detail

getPreferenceMatrix

public SparseMatrix getPreferenceMatrix()

Return the rate matrix.

Specified by:

getPreferenceMatrix in interface DataConvertor

Returns:

preferenceMatrix

getDatetimeMatrix

public SparseMatrix getDatetimeMatrix()

Return the date matrix.

Specified by:

getDatetimeMatrix in interface DataConvertor

Returns:

datetimeMatrix

getSparseTensor

public SparseTensor getSparseTensor()

Return the rate tensor.

Specified by:

getSparseTensor in interface DataConvertor

Returns:

sparseTensor