Automated negotiation gives a flexible rather than a fixed price in a deal so that the payoffs of both the buyers and sellers can be maximized, and also it can ensure an efficient transaction by way of automated bargaining between negotiation agents. However, one of the difficulties of automated negotiation system is the lack of effective protocols, which are essential and fundamental in automated negotiation system. First, give the new advancements in this domain, and then give a survey of current protocols, and finally, present a protocol model of automated negotiation system.
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