Ranker

Base class for ranking models.

Parameters

• seed (int) – defaults to None

  Random number generation seed. Set this for reproducibility.

Attributes

• is_contextual

Methods

learn_one

Fits a user-item pair and a real-valued target y.

Parameters

• user (Union[str, int])
• item (Union[str, int])
• y (Union[numbers.Number, bool])
• x (dict) – defaults to None

predict_one

Predicts the target value of a set of features x.

Parameters

• user (Union[str, int])
• item (Union[str, int])
• x (dict) – defaults to None

Returns

typing.Union[numbers.Number, bool]: The predicted preference from the user for the item.

rank

Rank models by decreasing order of preference for a given user.

Parameters

• user (Union[str, int])
• items (Set[Union[str, int]])
• x (dict) – defaults to None