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38 lines
1.2 KiB
38 lines
1.2 KiB
import stormpy
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import stormpy.core
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import stormpy.examples
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import stormpy.examples.files
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def example_exploration_02():
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"""
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Example to exploration of POMDPs.
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:return:
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"""
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program = stormpy.parse_prism_program(stormpy.examples.files.prism_pomdp_maze)
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prop = "R=? [F \"goal\"]"
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properties = stormpy.parse_properties(prop, program)
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model = stormpy.build_model(program, properties)
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print(model.model_type)
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# Internally, POMDPs are just MDPs with additional observation information.
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# Thus, data structure exploration for MDPs can be applied as before.
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initial_state = model.initial_states[0]
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for state in model.states:
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if state.id in model.initial_states:
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print(state)
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for action in state.actions:
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for transition in action.transitions:
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print("From state {} by action {}, with probability {}, go to state {}".format(state, action, transition.value(),
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transition.column))
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print(model.nr_observations)
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for state in model.states:
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print("State {} has observation id {}".format(state.id, model.observations[state.id]))
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if __name__ == '__main__':
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example_exploration_02()
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