| 摘要 |
PROBLEM TO BE SOLVED: To provide a technic of recommending various items.SOLUTION: An item information storage unit stores attribute association information formed by associating an item identifier with an attribute identifier. A recommendation attribute selection unit calculates an attribute recommendation value on the basis of use information and the attribute association information, selects a recommendation attribute for each use entity identifier, on the basis of the calculated attribute recommendation value, and creates recommendation attribute information by associating each of the use entity identifiers with the recommendation attribute. A recommendation item selection unit calculates a recommendation value between one use entity and each of the item identifiers included in a recommendation candidate item group which is a group of item identifiers included in the attribute association information including any of the attribute identifiers included in the recommendation attribute information, and selects an item to be recommended to the one use entity, on the basis of the calculated recommendation value. |
