ON-LINE SHOPPING SUPPORT METHOD AND SYSTEM

摘要

PROBLEM TO BE SOLVED: To provide a proper service in response to the individual needs of users by calculating the purchase interval of every commodity based on the commodity purchase history information which are stored for every user and estimating the time when the demand is made for every commodity. SOLUTION: When a user starts the on-line shopping, he inputs a user identifier via an input device 222 of a client device 220. A server device 210 inputs the user identifier received from the device 220 to retrieve the user's purchase history information out of those that are stored in a storage 212 in response to the user identifier and calculates the purchase intervals of commodities which are purchased by the user in the past. Then the device 210 decides whether a period that is equivalent to the calculated purchase interval has passed from the latest date of purchase for every commodity. Then the information on the commodities whose purchase interval periods have passed are sent to the device 220 via a communication network 230 and displayed on an output device 223.