Threshold placement Use specified P(FA)or P(MD) Alerting Cost Function: Define CFA, CMD as alert decision costs J=P(FA)CFA+P(MD)Cn P(FA)CFA+(1-P(CD)CMD Minimize Cost d= dP(FA)CFA-dP(CD) CMD=0 dP(CD) C FA dP(FA)C Slope of soc curve= cost ratio Threshold Location 040.6081.0 Courtesy: Jim KucharSystem Supervisory Control Computer Interface Display Control Sensors Direct Observation Courtesy: Jim Kuchar