| 摘要 |
PROBLEM TO BE SOLVED: To ensure that the profit of each bidder is to be maximized by bidding a proper evaluation value for each of property without making a bidder profitable even when the single bidder performs bids under plural fictions names. SOLUTION: The set of all a plurality of property is defined as a divided set SD1 of level (i)=1, the plural sets are divided at least once so as to successively reduce the number of elements in the number of properties, a divided set SDi having the value of (i) corresponding to the number of times of division and a minimum price for each of properties are made public, it is determined whether or not the property can be sold by an assignment method using SD1 having the little number of levels while using the minimum price of (i) concerning the evaluation value reported concerning that SDi and when the property can be sold, the assignment method to maximize the sum of evaluation values is determined. Then, the successful bidder and the amount of payment are found but when the property can not be sold, similar operation is performed by adding '1' to (i). |
