Patent ID: 7401047
Filing Date: 2008-07-15
Classification: G06Q

Abstract:
1. A successful bid decision method in an auctioneer apparatus of an electronic double auction scheme in which buyers and sellers each bid for k units, said k being an integer equal to or greater than 1, said method comprising the steps of: (a) reading out buyers' evaluation values and sellers' evaluation values from a storage part in which evaluation values b submitted by buyers and evaluation values s submitted by sellers are prestored, sorting said read-out buyers' evaluation values in decreasing order to obtain a sequence of buyers' evaluation values b (b) determining a ranking i of a smallest evaluation value b (c) deciding which of said ranking i and j is higher than the other; (d) determining said threshold price r as a trading price for first to i-th buyers and sellers when it is decided in said step (c) that said ranking i and j are equal; (e) determining, when it is decided in said step (c) that said ranking i is higher than j, as a purchase price of k units for a buyer whose k declared evaluation values are contained in first to j-th evaluation values of said buyers' evaluation value sequence, and said threshold price r as a trading price for the first to j-th sellers, said max(b, r) representing a value of larger one of said b and r, and said b (h) ˜x representing an h-th largest evaluation value except an evaluation value of a buyer x; (f) determining, when it is decided in said step (c) that said ranking i is lower than j, said threshold price r as a trading price for the first to i-th buyers, and as a trading price for first to i-th sellers each selling k units, said min(s, r) representing a value of smaller one of said s and r, and s (h) ˜y representing an h-th smallest evaluation value except an evaluation value of a seller y; and (g) sending a successful-bid notification containing the determined trading price to each buyer determined to be a successful bidder and each seller determined to be a successful bidder.