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Qualitative simulation is a useful method for predicting the possible qualitatively distinct behaviors of an incompletely known mechanism described by a system of qualitative diierential equations (QDEs). Under some circumstances, sparse information about the derivatives of variables can lead to intractable branching (or \chatter") representing(More)
13 task by allowing intervals to be given as values of the input parameters, and generating the plausible behaviors. A similar application in engineering relates to necessary tolerances of various model parameters. Simply simulating many times with dierent combinations of plausible model parameter values, as in Monte Carlo simulation, is likely to be(More)
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