A system and method for providing more than two levels of classification distinction of a user state are provided. The first and second general states of a user are sensed. The first general state is classified as either a first state or a second state, and the second general state is classified as either a third state or a fourth state. The user state of the user is then classified as one of at least three different classification states.
US 9,037,523 B2
Honeywell International Inc.
Whitlow, Stephen and Dorneich, Michael C., "Multiple two-state classifier output fusion system and method" (2015). Industrial and Manufacturing Systems Engineering Patents. 11.