| 摘要 |
PROBLEM TO BE SOLVED: To enable a preparation of a recommendation list at high speed in an E-commerce service having a large number of unique items.SOLUTION: The present invention is configured to: acquire purchase information on each user ID in the E-Commerce service; calculate the sales number of each of items, using the purchase information; determine a representative item on the basis of the sales number of each of the items; eliminate the item from a candidate of the representative item when a prescribed threshold value is not exceeded; calculate a recommendation score of each representative item to each user, using the purchase information and the representative item; prepare a recommendation list to each user on the basis of the calculated recommendation score; and when an identifier of a user is given, select an identifier of an item of the user as a recommendation commercial product, using the recommendation list. |
