org.grouplens.lenskit.data.text

Class Formats

java.lang.Object

org.grouplens.lenskit.data.text.Formats

public final class Formats
extends Object

Utility classes for event formats.

Since:

2.2

Method Summary

Modifier and Type	Method and Description
static DelimitedColumnEventFormat	csvRatings() A basic format of ratings in a CSV file.
static DelimitedColumnEventFormat	delimitedRatings(String delim) A basic format of ratings in a CSV file.
static DelimitedColumnEventFormat	ml100kFormat() Get a format for reading the ML-100K data set.
static DelimitedColumnEventFormat	movieLensFormat() Get a format for reading the MovieLens 1M and 10M data sets.
static DelimitedColumnEventFormat	movieLensLatest() Get a format for reading the MovieLens 20M and Latest data sets.

Methods inherited from class java.lang.Object

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

Method Detail

delimitedRatings

public static DelimitedColumnEventFormat delimitedRatings(String delim)

A basic format of ratings in a CSV file. The expected format is (user, item, rating, timestamp), where the timestamp is optional.

Parameters:

delim - The delimiter.

Returns:

An event format for reading ratings from a CSV file.

csvRatings

public static DelimitedColumnEventFormat csvRatings()

A basic format of ratings in a CSV file. The expected format is (user, item, rating, timestamp), where the timestamp is optional.

Returns:

An event format for reading ratings from a CSV file.

ml100kFormat

public static DelimitedColumnEventFormat ml100kFormat()

Get a format for reading the ML-100K data set.

Returns:

A format for using TextEventDAO to read the ML-100K data set.

movieLensFormat

public static DelimitedColumnEventFormat movieLensFormat()

Get a format for reading the MovieLens 1M and 10M data sets.

Returns:

A format for using TextEventDAO to read the ML-1M and ML-10M data sets.

movieLensLatest

public static DelimitedColumnEventFormat movieLensLatest()

Get a format for reading the MovieLens 20M and Latest data sets.

Returns:

A format for using TextEventDAO to read the ML-10M and ML-Latest data sets.