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Probabilities for prospective states of the state resources are not a basic part of the model, because this is not generally needed and would waste a lot of system resources. In some cases, however, the use of probabilities can dramatically affect the plan result, especially if a state probability can be changed by special actions. For example, if the agent is searching for a key, it is not easy to express progress within the search process without probabilities. Whether the agent searches one drawer or two drawers must make a difference.

The probabilities can be realized by continuous domain state resources. The figure below shows a possible modeling of the search for the key.

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Last update:
May 20, 2001 by Alexander Nareyek