Patent ID: 8812428

Claim:
A method for assessing the impact of fatigue on performance, the method comprising: determining an initial model-predicted fatigue level of an individual at an initial time; creating a mapping function that that transforms a fatigue level to a contextual performance metric, wherein creating the mapping function comprises: selecting a set of records from a historical fatigue database, the historical fatigue database populated by records, each record comprising: a contextual performance metric field comprising a contextual performance metric value obtained from one or more historical events; and a fatigue level field comprising a fatigue level value obtained from one or more individuals associated with the one or more historical events; grouping the selected records into one or more zones, each zone spanning a range of fatigue levels; for each zone, combining the contextual performance metric values of the records grouped into the zone to determine a zone-based contextual performance metric value; and determining the mapping function to be one or more of: a piecewise function, a discrete function, a continuous function, a linear function, and a look-up table, that correlates fatigue levels within each fatigue zone to a corresponding zone-based contextual performance metric; and transforming the initial model-predicted fatigue level into an initial contextual performance metric by applying the mapping function to the initial model-predicted fatigue level.