Glossary
Terms used in accessibility research and practice. Each entry has a definition, common aliases, and category tags.
Search results
- Character Error Rate(also: CER)
- A metric for evaluating automatic speech recognition (ASR) and optical character recognition (OCR) accuracy, measuring the minimum number of character-level edits (insertions, deletions, substitutions) needed to transform the system output into the reference text, divided by the…
- Communication Rate(also: Communication Speed)
- The speed at which a person can convey messages, typically measured in words per minute (WPM). For AAC users, communication rate is often significantly slower than natural speech (100-200 WPM)—unaided AAC users may achieve only 2-10 WPM with scanning systems, while more advanced…
- Correctness(also: Precision, Validity)
- In the context of accessibility evaluation, correctness (also called precision) is the proportion of reported accessibility problems that are true problems — that is, issues that genuinely affect users with disabilities rather than false positives. A high correctness rate means…
3 results.