Glossary
Terms used in accessibility research and practice. Each entry has a definition, common aliases, and category tags.
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- NER Model(also: Number, Edition, Recognition Model, NER Accuracy Model)
- A caption-quality evaluation model developed by Pablo Romero-Fresco and Juan Martínez Pérez for measuring the accuracy of live subtitling and respeaking. Unlike Word Error Rate, which penalises all errors equally, the NER model weights each error by how much it affects the…
- Non-Speech Sounds(also: Non-Speech Audio, Sound Effects)
- Auditory content in media that is not spoken dialogue, including music, environmental noises, sound effects, laughter, applause, and other ambient sounds. Non-speech sounds carry important narrative, emotional, and contextual information that contributes to a viewer's…
- Non-manual markers(also: NMM, Non-manual signals, Facial grammar)
- Linguistic features in sign languages that are conveyed through facial expressions, head tilts, eye gaze direction, mouth movements, and body posture rather than through hand signs. Non-manual markers serve grammatical functions in ASL and other sign languages — including…
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