| 摘要 |
PURPOSE: A rank calculation method using purchase evaluation is provided to enable a purchaser to select a product and a service for each preference item based on the purchase evaluation, thereby enabling the notification of purchase evaluation of other purchasers for the selected product or service. CONSTITUTION: A management server of a manager registers selling information of a seller. The management server informs a rank calculation method using purchase evaluation to a purchaser. The purchaser is registered in the management server. The purchaser performs item purchase evaluation for a product or a service. The management server processes collected purchase evaluation data. The management server notifies a purchase evaluation index in ranks of various types. The manager provides the purchase evaluation data to the seller and the purchaser. [Reference numerals] (AA) Registering information of a seller; (BB) Informing a purchaser about the selling information; (CC) Using a product and service of the purchaser; (DD) Performing purchase evaluation by the purchaser; (EE) Classifying, statistically treating, and processing purchase evaluation data; (FF) Notifying an evaluation index in ranks; (GG) Providing the processed evaluation data to the seller |
