es.upm.etsisi.cf4j.data

Interface DataSet

All Known Implementing Classes:

RandomSplitDataSet, TrainTestFilesDataSet

public interface DataSet

This interface works as a bridge between the raw file and the DataModel. This interface ensures collaborative filtering ratings separated into two groups: no-test and test. The ratings must be returned in DataSetEntries which structure is conformed by user, item and rating.

Method Summary

Modifier and Type	Method and Description
int	getNumberOfRatings() This method indicates the number of (training) ratings.
int	getNumberOfTestRatings() This method indicates the number of test ratings.
Iterator<DataSetEntry>	getRatingsIterator() This method generates an iterator to navigate through the raw ratings stored in DataSetEntries.
Iterator<DataSetEntry>	getTestRatingsIterator() This method generates an iterator to navigate through the raw test ratings stored in DataSetEntries.

Method Detail

getRatingsIterator

Iterator<DataSetEntry> getRatingsIterator()

This method generates an iterator to navigate through the raw ratings stored in DataSetEntries.

Returns:

Iterator of ratings

getNumberOfRatings

int getNumberOfRatings()

This method indicates the number of (training) ratings.

Returns:

Number of (training) ratings

getTestRatingsIterator

Iterator<DataSetEntry> getTestRatingsIterator()

This method generates an iterator to navigate through the raw test ratings stored in DataSetEntries.

Returns:

Iterator of test ratings

getNumberOfTestRatings

int getNumberOfTestRatings()

This method indicates the number of test ratings.

Returns:

Number of test ratings