EL ENG 143 Study Guide - Midterm Guide: Conditional Independence, Net., Robitussin

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Unfortunately during spring due to illness and allergies, billy is unable to distinguish the cause (x) of his symptoms which could be: coughing (c), sneezing (s), and temperature (t). If he is able to determine the cause with a reasonable accuracy, it would be bene cial for him to take either robitussin dm or benedryll. He has asked you to help him formulate his problem as a bayesian network. At any point in time, billy can either be sick (x = sick), allergic (x = allergic), or well (x = well). (a) (2 points) list all independence and conditional independence relationships implied by this bayes" net. You sometimes get colds, which make you sneeze. You also get allergies, which make you sneeze. Sometimes you are well, which doesn"t make you sneeze (much). You decide to model the process using the following. Hmm, with hidden states x {well, allergy, cold} and observations e {sneeze, quiet}.