| 摘要 |
PROBLEM TO BE SOLVED: To support specifying of a customer who may purchase a specific commodity at a specific period.SOLUTION: Based on a period when a first commodity is purchased, which is memorized in association with each of a plurality of pieces of customer identification information and a required period until the first commodity is consumed, a customer extraction program calculates a predicted value of the period when the first commodity is to be purchased, for each of the pieces of customer identification information. The program makes a computer execute processing to extract customer identification information in which at least a part of a period related to the predicted value overlaps with a predetermined period from the plurality of pieces of customer identification information. |
