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Multiagent Systems

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Prof. Dr. Jürgen Dix · Department of Informatics, TUC <strong>Multiagent</strong> <strong>Systems</strong>, WS 06/07 355/731<br />

5. Nets and coalitions 2. Four Types of Nets<br />

Theorem 5.14 (O-, C-, S-, M- Global Optima)<br />

There are instances of the task allocation problem<br />

where no IR sequence from the initial task<br />

allocation to the optimal one exists using O-,<br />

C-, S-, and M- contracts.<br />

Proof.<br />

Construct cost functions such that the deal<br />

where agent 1 gives one task to agent 2 and agent<br />

2 gives 2 tasks to agent 1 is the only one<br />

increasing welfare. This deal is not possible with<br />

O-, C-, S-, or M-contracts.

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