Glossary
Terms used in accessibility research and practice. Each entry has a definition, common aliases, and category tags.
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- Human Computation
- A computing paradigm in which humans perform tasks that computers cannot yet do reliably, often embedded within systems that combine human and machine capabilities. The classic example is reCAPTCHA, which used human text recognition to digitise books while verifying users were…
- Human Computation(also: Crowdsourced Computing)
- A computational approach that harnesses human intelligence to perform tasks that computers cannot easily accomplish alone. In accessibility contexts, human computation powers services like remote sighted assistance for blind users, crowd-powered captioning to improve ASR…
- Human Intelligence Task(also: HIT)
- A unit of work on a crowdsourcing platform, particularly Amazon Mechanical Turk, that requires human judgment to complete. HITs typically involve tasks that are difficult for computers but straightforward for humans, such as image labeling, transcription, content moderation, or…
- Human-Powered Accessibility(also: Human Computation for Accessibility, Crowd-Powered Assistive Technology)
- An approach to assistive technology that uses remote human workers — whether paid crowdworkers, volunteers, or trained agents — to provide accessibility services that automated systems cannot yet deliver reliably. Examples include providing real-time visual descriptions for…
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