org.lenskit.bias

Class ItemBiasModel

java.lang.Object

org.lenskit.bias.UserItemBiasModel

org.lenskit.bias.ItemBiasModel

All Implemented Interfaces:

Serializable, BiasModel

@Shareable
 @Immutable
 @DefaultProvider(value=ItemAverageRatingBiasModelProvider.class)
public class ItemBiasModel
extends UserItemBiasModel

Bias model that provides global and item biases. The item biases are precomputed and are not updated based on new data added since the model builds

See Also:

Serialized Form

Constructor Summary

Constructors

Constructor and Description
ItemBiasModel(double global, Long2DoubleMap items) Construct a new item bias model.

Method Summary

Methods inherited from class org.lenskit.bias.UserItemBiasModel

getIntercept, getItemBias, getItemBiases, getUserBias, getUserBiases

Methods inherited from class java.lang.Object

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

Constructor Detail

ItemBiasModel

public ItemBiasModel(double global,
                     Long2DoubleMap items)

Construct a new item bias model.

Parameters:

global - The global bias.

items - The item biases.