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• Select the feature that yields the maximum immediate reward r (st, at)= margin (st, at)− cost (st, at) λ= 1, cost scaled to [0, 1], H1N1= positive order feat. marg. cost reward 1 coughing, sore throat, headache-0.20 0.00-0.10 3 temperature (101◦) 0.55 0.05 0.50 2 nasal swab test (pos.) 0.50 0.04 0.46 4 viral culture test (pos.) 0.80 0.24 0.56 6 molecular test (pos.) 0.95 1.00-0.05 5 blood test (pos.) 0.90 0.62 0.28