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Lexical diversity

Lexical diversity is one aspect of 'lexical richness' and refers to the ratio of different unique word stems (types) to the total number of words (tokens). The term is used in applied linguistics and is quantitatively calculated using numerous different measures including Type-Token Ratio (TTR), vocd, and the measure of textual lexical diversity (MTLD).

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In a 2013 article Scott Jarvis proposed that lexical diversity, similar to diversity in ecology, is a perceptual phenomenon. Lexical redundancy is a positive counterpart of lexical diversity in the same way as lexical variability is the mirror image of repetition. According to Jarvis's model, lexical diversity includes variability, volume, evenness, rarity, dispersion and disparity. According to Jarvis, the six properties of lexical diversity should be measured by the following indices. ==References==
Source: Wikipedia ↗
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