The game of Diplomacy has been used as a test case for complex automated negotiations for a long time, but to date very few successful negotiation algorithms have been implemented for this game. We have therefore decided to include a Diplomacy tournament within the annual Automated Negotiating Agents Competition (ANAC). In this paper we present the setup and the results of the ANAC 2017 Diplomacy Competition and the ANAC 2018 Diplomacy Challenge. We observe that none of the negotiation algorithms submitted to these two editions have been able to significantly improve the performance over a non-negotiating baseline agent. We analyze these algorithms and discuss why it is so hard to write successful negotiation algorithms for Diplomacy. Finally, we provide experimental evidence that, despite these results, coalition formation and coordination do form essential elements of the game.
|Title of host publication||Agreement Technologies|
|Subtitle of host publication||6th International Conference, AT 2018, Revised Selected Papers|
|Place of Publication||Cham|
|Number of pages||15|
|Publication status||Published - 2019|
|Event||6th International Conference on Agreement Technologies, AT 2018 - Bergen, Norway|
Duration: 6 Dec 2018 → 7 Dec 2018
|Name||Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics)|
|Conference||6th International Conference on Agreement Technologies, AT 2018|
|Period||6/12/18 → 7/12/18|
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