Classification problems Many systems function by classifying instances into classes Character recognition Does belong to A B. C.? Fire detection Does this amount of smoke and heat indicate a fire or a BBo? Air bag deployment Do these accelerometer inputs indicate a crash, a bumpy road, a hard stop? http://www-engr.sjsu.edu/knapp/hcirodpr/prhome.htm Pattern Recognition for HCl, RichardO duda o16 B81 Department of Electrical Engineering, San Jose State University MITClassification Problems • Many systems function by classifying instances into classes – Character recognition • D o es R belong to A, B, C, ...? – Fire detection • Does this amount of smoke and heat indicate a fire or a BBQ? – Air bag deployment • Do these accelerometer inputs indicate a crash, a bumpy road, a hard stop? http://www-engr. sjsu.edu/~knapp/ HCIRODPR/PR_home.htm Pattern Recognition for HCI, Richard O. Duda 16.881 Department of Electrical Engineering, San Jose State University MIT