MyMediaLite
3.07
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Interface for implicit, positive-only user feedback. More...
Public Member Functions | |
void | Add (int user_id, int item_id) |
Add a user-item event to the data structure. | |
int | GetIndex (int user_id, int item_id) |
Get index for a given user and item. | |
int | GetIndex (int user_id, int item_id, ICollection< int > indexes) |
Get index for given user and item. | |
IBooleanMatrix | GetItemMatrixCopy () |
Get a copy of the item matrix. | |
ISet< int > | GetItems (IList< int > indices) |
Get all items that are referenced by a given list of indices. | |
IBooleanMatrix | GetUserMatrixCopy () |
Get a copy of the user matrix. | |
ISet< int > | GetUsers (IList< int > indices) |
Get all users that are referenced by a given list of indices. | |
void | Remove (int user_id, int item_id) |
Remove a user-item event from the data structure. | |
void | RemoveItem (int item_id) |
Remove all events related to a given item. | |
void | RemoveUser (int user_id) |
Remove all events related to a given user. | |
IPosOnlyFeedback | Transpose () |
Get the transpose of the dataset (users and items exchanged) | |
bool | TryGetIndex (int user_id, int item_id, out int index) |
Try to get the index for given user and item. | |
bool | TryGetIndex (int user_id, int item_id, ICollection< int > indexes, out int index) |
Try to get the index for given user and item. | |
Properties | |
IList< int > | AllItems [get] |
all item IDs in the dataset | |
IList< int > | AllUsers [get] |
all user IDs in the dataset | |
IList< IList< int > > | ByItem [get] |
indices by item | |
IList< IList< int > > | ByUser [get] |
indices by user | |
int | Count [get] |
the number of interaction events in the dataset | |
IList< int > | CountByItem [get] |
count by item | |
IList< int > | CountByUser [get] |
count by user | |
IBooleanMatrix | ItemMatrix [get] |
By-item access, items are stored in the rows, users in the culumns. | |
IList< int > | Items [get] |
the item entries | |
int | MaxItemID [get] |
the maximum item ID in the dataset | |
int | MaxUserID [get] |
the maximum user ID in the dataset | |
IList< int > | RandomIndex [get] |
get a randomly ordered list of all indices | |
IBooleanMatrix | UserMatrix [get] |
By-user access, users are stored in the rows, items in the culumns. | |
IList< int > | Users [get] |
the user entries |
Interface for implicit, positive-only user feedback.
void Add | ( | int | user_id, |
int | item_id | ||
) |
Add a user-item event to the data structure.
user_id | the user ID |
item_id | the item ID |
Implemented in PosOnlyFeedback< T >.
int GetIndex | ( | int | user_id, |
int | item_id | ||
) | [inherited] |
Get index for a given user and item.
user_id | the user ID |
item_id | the item ID |
Implemented in DataSet.
int GetIndex | ( | int | user_id, |
int | item_id, | ||
ICollection< int > | indexes | ||
) | [inherited] |
Get index for given user and item.
user_id | the user ID |
item_id | the item ID |
indexes | the indexes to look at |
Implemented in DataSet.
Get a copy of the item matrix.
Implemented in PosOnlyFeedback< T >.
ISet<int> GetItems | ( | IList< int > | indices | ) | [inherited] |
Get all items that are referenced by a given list of indices.
indices | the indices to take into account |
Implemented in DataSet.
Get a copy of the user matrix.
Implemented in PosOnlyFeedback< T >.
ISet<int> GetUsers | ( | IList< int > | indices | ) | [inherited] |
Get all users that are referenced by a given list of indices.
indices | the indices to take into account |
Implemented in DataSet.
void Remove | ( | int | user_id, |
int | item_id | ||
) |
Remove a user-item event from the data structure.
If no event for the given user-item combination exists, nothing happens.
user_id | the user ID |
item_id | the item ID |
Implemented in PosOnlyFeedback< T >.
void RemoveItem | ( | int | item_id | ) | [inherited] |
Remove all events related to a given item.
item_id | the item ID |
Implemented in Ratings, DataSet, PosOnlyFeedback< T >, StaticRatings, and RatingsProxy.
void RemoveUser | ( | int | user_id | ) | [inherited] |
Remove all events related to a given user.
user_id | the user ID |
Implemented in Ratings, DataSet, PosOnlyFeedback< T >, StaticRatings, and RatingsProxy.
Get the transpose of the dataset (users and items exchanged)
Implemented in PosOnlyFeedback< T >.
bool TryGetIndex | ( | int | user_id, |
int | item_id, | ||
out int | index | ||
) | [inherited] |
Try to get the index for given user and item.
user_id | the user ID |
item_id | the item ID |
index | will contain the index of the first event encountered that matches the user ID and item ID |
Implemented in DataSet.
bool TryGetIndex | ( | int | user_id, |
int | item_id, | ||
ICollection< int > | indexes, | ||
out int | index | ||
) | [inherited] |
Try to get the index for given user and item.
user_id | the user ID |
item_id | the item ID |
indexes | the indexes to look at |
index | will contain the index of the first event encountered that matches the user ID and item ID |
Implemented in DataSet.
IList<IList<int> > ByItem [get, inherited] |
IList<IList<int> > ByUser [get, inherited] |
int Count [get, inherited] |
the number of interaction events in the dataset
Implemented in StaticRatings, DataSet, and IRatings.
IList<int> CountByItem [get, inherited] |
IList<int> CountByUser [get, inherited] |
IBooleanMatrix ItemMatrix [get] |
By-item access, items are stored in the rows, users in the culumns.
should be implemented as lazy data structure
Implemented in PosOnlyFeedback< T >.
IList<int> RandomIndex [get, inherited] |
get a randomly ordered list of all indices
Should be implemented as a lazy data structure
Implemented in DataSet.
IBooleanMatrix UserMatrix [get] |
By-user access, users are stored in the rows, items in the culumns.
should be implemented as lazy data structure
Implemented in PosOnlyFeedback< T >.