| 摘要 |
PROBLEM TO BE SOLVED: To obtain a method suitable for estimating user's choice by collecting commodity selecting history information of a user in an electronic transaction system. SOLUTION: In the electronic transaction system obtained by connecting a client 230 utilizing the service of electronic transaction and a server 210 providing the service of electronic transaction through a communication network 220, an inquiring request in some period or the kind and requesting contents of an ordered commodity from the client 230 are collected as commodity selecting history information. Then, based on collected commodity selecting history information, a relational expression between a commodity attribute being the physical and functional feature of the commodity and a liking degree showing the degree of the user's liking with respect to the commodity attribute is estimated to estimate a liking degree with respect to the commodity consisting of the commodity attribute based on the relational expression between the estimated commodity attribute and the liking. |
