Meaning of vocd | Babel Free

Definitions

A measure of the lexical diversity of a given corpus, determined by comparing the sizes of steadily larger random samples from the corpus against their respective type-token ratios.

uncountable

Examples

“The VOCD command was written by Gerard McKee of the Department of Computer Science, The University of Reading. [...] The complete description of VOCD can be found in: Malvern, D., Richards, B., Chipere, N., & Purán, P. (2004).”

“A recently developed index of lexical diversity, voc'''D, uses repeated calculations of the type–token ratio (TTR) over a range of tokens to show how the TTR varies in relation to sample size. […] Owen and Leonard (2002) found that children with SLI between the ages of 3 and 7 had lower scores on voc'''D based on 100 utterances than age-matched, typically developing comparison children […]”

“A paired sample t-test was conducted and results indicated no significant differences between vocd scores for younger and older participants, t(29) = 1.154, p = .253.”

“To calculate a VOCD, words from a corpus are randomly sampled, in increasing sample sizes. The resultant curve relating sample size and type-token ratio is plotted, and a value is fit to a segment of that curve.”

CEFR level