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Multiagent Systems

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of. Dr. Jürgen Dix · Department of Informatics, TUC <strong>Multiagent</strong> <strong>Systems</strong>, WS 06/07 573/731<br />

8. Action/Time as Modalities 5. Verification<br />

Complexity of Model Checking CTL and ATL<br />

Nice results: model checking CTL and ATL is<br />

tractable.<br />

But: the result is relative to the size of the<br />

model and the formula<br />

Well known catch (CTL): size of models is<br />

exponential wrt a higher-level description<br />

Another problem: transitions are labelled<br />

So: the number of transitions can be<br />

exponential in the number of agents.

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