NEGOTIATION SYSTEM, NEGOTIATION METHOD, AND NEGOTIATION PROGRAM

摘要

A negotiation system 20 performs negotiation with an order placing party who presents, to an order reception party who provides a given commodity or service, an order indicating a request for provision of the given commodity or service, the system being provided with: a determination unit 21 that determines whether execution conditions corresponding to an existing order from the order placing party can be changed; a plan creation unit 22 that creates an order receiving plan for execution conditions corresponding to a new order from the order placing party and execution conditions corresponding to the existing order after changing of an execution condition determined to be changeable; and a utility calculation unit 23 that calculates utility based on the order receiving plan.