| 摘要 |
PROBLEM TO BE SOLVED: To determine a bargain price in consideration of a commodity purchase correlation.SOLUTION: A demand estimation device has an estimated purchase quantity calculation part for calculating an estimated purchase quantity per commodity included in a commodity group within a second prescribed period which is a period after a first prescribed period by using a non-self sum regression coefficient indicating a degree of contribution of the sum of purchase quantities of non-self commodities other than an object commodity which is a prescribed commodity included in the commodity group to variation in purchase quantity of the object commodity, a variation regression coefficient indicating a degree of contribution of variation factor information of the object commodity to the variation in purchase quantity of the object commodity and the variation factor information of the object commodity, and a condition correction recalculation part for recalculating an estimated purchase number by varying the variation factor information stored in a storage part for each commodity included in the commodity group and approximating the calculated estimated purchase number to a target value. |
