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Prof. Dr. Jürgen Dix · Department of Informatics, TUC <strong>Multiagent</strong> <strong>Systems</strong>, WS 06/07 345/731<br />

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

Definition 5.4 (O-, C-, S-, M- Contracts)<br />

A contract is called of type<br />

O (Original): only one task is moved: 〈T i,j , ρ i,j 〉,<br />

|T i,j | = 1.<br />

C (Cluster): a set of tasks is moved: 〈T i,j , ρ i,j 〉,<br />

|T i,j | 1.<br />

S (Swap): if a pair of agents swaps a pair of tasks:<br />

〈T i,j , T j,i , ρ i,j , ρ j,i 〉, |T i,j | = |T j,i | = 1.<br />

M (Multi): if more than two agents are involved<br />

in an atomic exchange of tasks: 〈T, ρ〉,<br />

both are |A| × |A| matrices. At least 3<br />

elements are non-empty, |T i,j | ≤ 1.

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