Semantic Relatedness

A measure of how closely related two words or concepts are in meaning, encompassing various types of relationships including synonymy, hyponymy, meronymy, and general topical association. In assistive technology, semantic relatedness is used to improve word prediction and completion systems by promoting candidates that are meaningfully connected to the words already typed in a text. Resources such as WordNet (which organizes words by meaning) and corpus-based methods (which measure co-occurrence patterns) are used to compute semantic relatedness scores. Adding semantic awareness to prediction systems helps users with disabilities communicate more efficiently by offering contextually appropriate suggestions rather than merely statistically frequent ones.