GOODS COMBINATION DETERMINING METHOD IN BIDDING, ITS DEVICE, ITS PROGRAM AND ITS RECORDING MEDIUM

摘要

PROBLEM TO BE SOLVED: To determine a dividing set with a level used for a bid opening method robust against bidding of a false name so as to obtain a good social surplus. SOLUTION: A goods aggregate (a bundle) having the possibility of bidding and the probability distribution of respective bundles to the highest bitting value are predetermined. Supposing the highest value is bidden, a combination (divided D) of bundles becoming maximum in the sum of an expected value of the highest bidding value is determined (S1). This is added to the dividing set of a level 3. The whole divided D' composed of its n-1 pieces is formed of n piece of bundles for constituting the divided D. These are added to the dividing set of a level 2 (S2). The whole divided D" composed of two bundles by dividing goods for constituting the divided D into two parts is formed. The D" is added to the dividing set of the level 2 (S3).