org.lenskit.data.ratings

Interface Preference

All Known Implementing Classes:

Rating, RatingMatrixEntry

public interface Preference

A real-valued preference a user has for an item. This interface exists to abstract over different representations of preference, such as ratings and matrix entries.

Compatibility

Public

Method Summary

Modifier and Type	Method and Description
long	getItemId() Get the ID of the item the preference is for.
long	getUserId() Get the ID of the user whose preference this is.
double	getValue() Get the preference value.

Method Detail

getUserId

long getUserId()

Get the ID of the user whose preference this is.

Returns:

The user ID.

getItemId

long getItemId()

Get the ID of the item the preference is for.

Returns:

The item ID.

getValue

double getValue()

Get the preference value.

Returns:

The preference value.