IIncrementalItemRecommender Interface Reference

Interface for item recommenders More...

Inheritance diagram for IIncrementalItemRecommender:

Public Member Functions
void	AddFeedback (ICollection< Tuple< int, int >> feedback)
	Add positive feedback events and perform incremental training More...
void	RemoveFeedback (ICollection< Tuple< int, int >> feedback)
	Remove all feedback events by the given user-item combinations More...
void	RemoveItem (int item_id)
	Remove all feedback by one item More...
void	RemoveUser (int user_id)
	Remove all feedback by one user More...

Properties
bool	UpdateItems [get, set]
	true if items shall be updated when doing incremental updates More...
bool	UpdateUsers [get, set]
	true if users shall be updated when doing incremental updates More...

Detailed Description

Interface for item recommenders

Item prediction or item recommendation is the task of predicting items (movies, books, products, videos, jokes) that a user may like, based on past user behavior (and possibly other information).

See also http://recsyswiki/wiki/Item_prediction

Member Function Documentation

void AddFeedback

(

ICollection< Tuple< int, int >>

feedback

)

Add positive feedback events and perform incremental training

Parameters

feedback

collection of user id - item id tuples

Implemented in UserKNN, ItemKNN, MostPopular, MF, and IncrementalItemRecommender.

void RemoveFeedback

(

ICollection< Tuple< int, int >>

feedback

)

Remove all feedback events by the given user-item combinations

Parameters

feedback

collection of user id - item id tuples

Implemented in UserKNN, MostPopular, ItemKNN, MF, and IncrementalItemRecommender.

void RemoveItem ( int  item_id )

inherited

Remove all feedback by one item

Parameters

item_id

the item ID

Implemented in BiasedMatrixFactorization, BPRMF, MatrixFactorization, BPRSLIM, LeastSquareSLIM, MF, IncrementalRatingPredictor, IncrementalItemRecommender, MostPopular, and ItemAverage.

void RemoveUser ( int  user_id )

inherited

Remove all feedback by one user

Parameters

user_id

the user ID

Implemented in BiasedMatrixFactorization, MatrixFactorization, LeastSquareSLIM, MF, MostPopular, IncrementalRatingPredictor, IncrementalItemRecommender, and UserAverage.

Property Documentation

bool UpdateItems

getsetinherited

true if items shall be updated when doing incremental updates

Set to false if you do not want any updates to the item model parameters when doing incremental updates.

bool UpdateUsers

getsetinherited

true if users shall be updated when doing incremental updates

Default should be true. Set to false if you do not want any updates to the user model parameters when doing incremental updates.

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The documentation for this interface was generated from the following file:

• IIncrementalItemRecommender.cs