To provide consumer goods purchase information, by comparing a consumption tendency from a purchase interval of a classified household and a purchase interval of each commodity of each user, or predicting a next purchase commodity from the purchase interval.
When a member consumer 116 purchases a commodity in a store 118, transaction information acquired from the store 118 based on a credit card ID is received, and is registered in a DB. When the member consumer 116 purchases the commodity in the store 118, a telegram of the transaction information generated by a store computer 117 is transmitted to a transaction information reception part 105 via a credit card-dedicated network 119, for example. Transaction information is also transmitted to the transaction information reception part 105 from other store 120 connected to the credit card-dedicated network 119. When the transaction information reception part 105 receives the transaction information, information on the purchased commodity is registered in a commodity information DB 114, and the transaction information is registered in a transaction detail DB 111.
KATAYAMA KEI
Sekiya Mitsuo
Toshiaki Watanabe
Kenichi Imamura
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