org.grouplens.lenskit.eval.data.traintest

Interface TTDataSet

All Known Implementing Classes:

GenericTTDataSet

@BuiltBy(value=GenericTTDataBuilder.class)
public interface TTDataSet

Interface for train-test data sets. This is a single train-test pair.

Since:

0.8

Method Summary

Modifier and Type	Method and Description
void	configure(LenskitConfiguration config) Configure LensKit to have the training data from this data source.
Map<String,Object>	getAttributes() Get the data set attributes (used for identification in output).
UUID	getIsolationGroup() Get the isolation group ID for this data set.
String	getName() Get the data set name.
EventDAO	getQueryDAO() Get the query data.
DataSource	getQueryData() Get the query data.
EventDAO	getTestDAO() Get the test data.
DataSource	getTestData() Get the training data.
EventDAO	getTrainingDAO() Get the training data.
DataSource	getTrainingData() Get the training data.
long	lastModified() Get the last modification time of this data set.

Method Detail

getName

String getName()

Get the data set name.

Returns:

A name for the data set. Used in the output file.

getAttributes

Map<String,Object> getAttributes()

Get the data set attributes (used for identification in output).

Returns:

A key → value map of the attributes used to identify this data set. For example, a crossfold data set may include the source name and fold number.

getIsolationGroup

UUID getIsolationGroup()

Get the isolation group ID for this data set. Data sets in the same group will be allowed to run in parallel. This is used to implement data set isolation.

Returns:

The group ID for this data set.

getTrainingData

DataSource getTrainingData()

Get the training data.

Returns:

A data source containing the training data.

getTrainingDAO

EventDAO getTrainingDAO()

Get the training data.

Returns:

An event DAO encompassing the training data.

getQueryData

DataSource getQueryData()

Get the query data.

Returns:

A data source containing the query data.

getQueryDAO

EventDAO getQueryDAO()

Get the query data.

Returns:

An event DAO encompassing the query data.

getTestData

DataSource getTestData()

Get the training data.

Returns:

A data source containing the test data.

getTestDAO

EventDAO getTestDAO()

Get the test data.

Returns:

A DAO factory returning the test data.

lastModified

long lastModified()

Get the last modification time of this data set.

Returns:

The last modification time, in milliseconds since the epoch.

configure

void configure(LenskitConfiguration config)

Configure LensKit to have the training data from this data source.

Parameters:

config - A configuration in which the training data for this data set should be configured.