Glossary
Terms used in accessibility research and practice. Each entry has a definition, common aliases, and category tags.
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- Wizard-of-Oz study(also: WoZ study, Wizard of Oz method)
- A research methodology in which participants interact with a system they believe is automated, but which is actually operated partially or fully by a hidden human operator (the "wizard"). This approach allows researchers to evaluate user experience, interface design, and…
- Word error rate(also: WER)
- The standard metric for evaluating automatic speech recognition accuracy, calculated as the number of substitutions, deletions, and insertions divided by the total number of words in the reference transcript. Research with DHH users has shown that WER correlates poorly with…
- Word importance(also: Lexical importance, Information content)
- A measure of how critical a specific word is to the overall meaning of a sentence, typically computed using neural language models that estimate how predictable a word is from its context. In captioning evaluation, word importance helps determine the impact of ASR errors:…
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