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Artificial Intelligence and Soft Computing: Behavioral ... - Arteimi.info

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there been no rush. So, the main question that remains: will the villagers, who<br />

reached the end E2 of the bridge within 15 minutes of the breaking out of fire<br />

in the village, vacate the village within 35 minutes? The decision of the pilot<br />

in selecting the right road depends solely on this answer. To resolve this, the<br />

fire brigade station-master observed the scenario in the village by moving up a<br />

high tower <strong>and</strong> found a few villagers rushing towards E2 <strong>and</strong> instructed his<br />

men to go to the spot through road2.<br />

forest<br />

village<br />

E2<br />

Hill wind<br />

flow<br />

river road1<br />

E1 bridge road2<br />

Fire brigade station<br />

Fig. 11.10: The topological map of a hillside village <strong>and</strong> its surroundings.<br />

The above story requires a spatial representation of the map <strong>and</strong> then<br />

reasoning about time. Here the spatial changes of the villagers <strong>and</strong> the fire<br />

brigade must be taken into account at specific time slots. Readers may try to<br />

formulate the (temporal part of the) problem by situation calculus <strong>and</strong> define<br />

the spatial part as FOL clauses. So, spatial changes can be reflected in<br />

different time frames. The non-monotonism in the problem can also be<br />

resolved by the qualification method presented under situation calculus.

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