Given continuous and discrete observations, determine
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Sequence of modes the system passed through (discrete faults)
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Value of continuous parameters (continuous faults)
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Time of mode changes (autonomous transition faults)
Challenge: Exponential Number of Hypotheses
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Each mode introduces a new set of continuous behaviors
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Observations dependent upon entire sequence and timing of modes
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Challenge: Generally Cannot Factor Hypothesis Space
• Failures in autonomous transitions effect
when each mode was in force
• Changes in continuous parameters may change
transition timing
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