Glossary // Glossary term Technical
False negative
A result in which a classifier or test reports that a condition is absent when it is present, for example a system that reports no distress in a person who is distressed. The rate of false negatives trades off against the rate of false positives as a decision threshold is moved. For states without a clear ground truth, such as emotions, even estimating this rate depends on which criterion is accepted as correct. Affective computing promises to infer emotion as if it were a system metric. The evidence on facial movements and autonomic signals, together with questions of consent, explains why every metric in this artifact is an artistic value. How one could reason about recording a catharsis-like change of state: signals, features, inference and context, baselines, self-report, error costs and ethics, and why every step stays uncertain. Nothing on this site measures anyone.Where the site uses it