To provide a selective bidding system capable of continuously performing impartial bidding.
In this selective bidding system in which the host device 10 of a bidding performer 1 side is connected to the communication terminals 31 of bidding candidate 3 sides through a communicating means 5 and the bidding performer 1 bids a plurality of bidders among the bidding candidates 3 to perform competitive bidding, the host device 10 has a database 11 composed of data such as the past business results and the past bidding results of the bidder candidates, a bidding rate calculating means 12 calculating the probabilities that the bidders are designated in each bidding candidate on the basis of the past business results and the past bidding results of the database and a bidder selecting means 13 which has a random number generating function and randomly selects a bidder among the bidding candidates on the basis of the bidding rates, randomly selects a bidder among the bidding candidates on the basis of the bidding rates to designate the bidder as a bidder when an order item 20 is brought about and notifies the bidder through the means 5 (1).
YASUDA TAKUJI
SATO FUKUTADA
YAMAGAMI SHIN
ISHIZAKA TADASHI
