Glossary
Terms used in accessibility research and practice. Each entry has a definition, common aliases, and category tags.
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- Entity Density(also: Entity-Density Features)
- A discourse-level readability feature measuring how many distinct entities — named entities (people, places, organisations) and general nouns — a text introduces per sentence or document. High entity density increases working-memory load on readers because each new entity must…
- Entity Grid(also: Entity-Grid Model)
- A model of local text coherence proposed by Barzilay and Lapata (2008) that represents a document as a two-dimensional grid: rows are sentences, columns are salient entities, and each cell records the grammatical role of that entity in that sentence (subject, object, other, or…
- Error Taxonomy(also: Error Classification, Error Typology)
- A systematic classification of the types of errors that users or learners commonly make, organised into categories based on the nature, source, or linguistic level of the error. In accessibility and educational technology, error taxonomies are used to build intelligent systems…
- Error-spread modelling(also: Error propagation modelling, Error radiation)
- An approach to evaluating the impact of speech recognition errors that accounts for how a single misrecognized word degrades comprehension of its neighbouring words, not just the word itself. For example, misrecognizing "kitchen" as "kitten" makes the subsequent word "area"…
- Evocation(also: Word Association Strength, Semantic Evocation)
- A measure of how strongly one word brings another word to mind, reflecting the associative connections between concepts in human semantic memory. Unlike formal semantic relationships such as synonymy or hyponymy, evocation captures the informal, often idiosyncratic associations…
- Extractive Summarization(also: Extractive Text Summarization)
- Extractive summarization is a natural language processing technique that creates summaries by selecting and preserving key words, phrases, or sentences directly from the original text, rather than generating new text (which is called abstractive summarization). In accessibility…
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