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Workshop proceeding - final.pdf - Faculty of Information and ...

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Searching for Fair Joint Gains in Agent-based Negotiation<br />

* Presenter<br />

1. Swinburne University<br />

Minyi Li 1 *<br />

In multi-issue negotiations, autonomous agents can act cooperatively to benefit from<br />

mutually preferred agreements. However, empirical evidence suggests that they <strong>of</strong>ten fail to<br />

search for joint gains <strong>and</strong> end up with inefficient results. To address this problem, we propose<br />

a novel mediated negotiation procedure to support the negotiation agents in reaching an<br />

efficient <strong>and</strong> fair agreement in bilateral multi-issue negotiation. At each stage <strong>of</strong> negotiation,<br />

the mediator searches for the compromise direction based on a new E-DD (Equal Directional<br />

Derivative) approach <strong>and</strong> computes the new tentative agreement. We experimentally evaluate<br />

the proposed approach with different kinds <strong>of</strong> utility functions. The experimental result<br />

demonstrates that the proposed approach not only guarantees Pareto efficiency, but also<br />

produces fairer improvements for two negotiating agents compared with other existing<br />

methods.<br />

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