Abstract: A system of recommending an item, a method of recommending an item by a system of recommending an item, a computer system, and a computer-readable storage medium are provided. The system includes: an item expansion module configured to expand a content input by a user in response to the content input by the user, to generate an item set of interest to the user, the item set includes one or more items; a price radar module configured to monitor a discount information of the item in the item set; and a price monitoring module configured to calculate an actual price of the item based on the discount information of the item, maintain a price change record of the item in the item set, and determine whether to push a prompt information to the user or not according to the calculated actual price of the item and the price change record.

Abstract: A method and device for outputting information are provided. The method includes: in response to receiving an item addition request sent by a user, acquiring a base item; acquiring a candidate item set; acquiring associated items of the base item to form an associated item set; and acquiring an initial item combination, and selecting an item from the candidate item set and adding same to the initial item combination, obtaining a first item combination; and based on the first item combination, deleting an item from the first item combination, obtaining an intermediate item combination ; selecting an item from the associated item set and adding same to the intermediate item combination, obtaining a second item combination; selecting a result item combination from the first item combination and the second item combination; and in response to the result item combination satisfying preset conditions, outputting the result item combination.