Glossary
Terms used in accessibility research and practice. Each entry has a definition, common aliases, and category tags.
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- BLEU Score(also: BiLingual Evaluation Understudy, BLEU)
- A metric for evaluating the quality of machine-generated text by comparing it to one or more reference (human-written) translations. BLEU calculates precision by counting how many n-grams (sequences of words) in the predicted text match n-grams in the reference text, with BLEU-1…
- Back-Translation(also: Reverse Translation)
- A quality assurance method used in survey and instrument translation where a translated version is independently translated back into the original language by a different translator. The back-translated text is then compared with the original to identify meaning losses or…
- Barrier Walkthrough(also: BW Method)
- The Barrier Walkthrough is a structured expert evaluation method for assessing web accessibility in which evaluators systematically examine a website against a predefined set of accessibility barriers rather than individual guideline success criteria. Unlike conformance-based…
- Barrier Walkthrough(also: Structured Walkthrough)
- A systematic accessibility evaluation method that guides evaluators through the process of identifying barriers that people with disabilities may encounter on a website. Unlike a standard conformance review that checks against all WCAG success criteria, a barrier walkthrough…
- Between-Subjects Design(also: Between-Groups Design, Independent-Groups Design)
- A between-subjects design is an experimental research design in which each participant is assigned to only one condition, and the conditions are compared across different groups of people. It contrasts with within-subjects (repeated-measures) designs, in which every participant…
- Blurred Vision Simulation(also: Vision Simulation, Low Vision Simulation)
- A technique used in accessibility evaluation where evaluators simulate the visual experience of people with reduced visual acuity by artificially blurring their view of a website or application. Methods include using low vision simulation glasses (commercially available from…
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