Güneş, Taha DoğanArditi, EmirAydoğan, Reyhan2018-05-282018-05-282017978-3-319-69130-50302-9743http://hdl.handle.net/10679/5819https://doi.org/10.1007/978-3-319-69131-2_27Due to copyright restrictions, the access to the full text of this article is only available via subscription.Inspired from the ideas such as “algorithm portfolio”, “mixture of experts”, and “genetic algorithm”, this paper presents two novel negotiation strategies, which combine multiple negotiation experts to decide what to bid and what to accept during the negotiation. In the first approach namely incremental portfolio, a bid is constructed by asking each negotiation agent’s opinion in the portfolio and picking one of the suggestions stochastically considering the expertise levels of the agents. In the second approach namely crossover strategy, each expert agent makes a bid suggestion and a majority voting is used on each issue value to decide the bid content. The proposed approaches have been evaluated empirically and our experimental results showed that the crossover strategy outperformed the top five finalists of the ANAC 2016 Negotiation Competition in terms of the obtained average individual utility.enginfo:eu-repo/semantics/restrictedAccessConference paper1062145045810.1007/978-3-319-69131-2_27Agreement technologiesAutomated negotiationMultilateral negotiationNegotiation CompetitionMulti-agent systems2-s2.0-85034265442