Compute lexical diversity from a dfm or tokens
Internal functions used in textstat_lexdiv(), for computing
lexical diversity measures on dfms or tokens objects
compute_lexdiv_dfm_stats(x, measure = NULL, log.base = 10)
compute_lexdiv_tokens_stats(
x,
measure = c("MATTR", "MSTTR"),
MATTR_window,
MSTTR_segment
)x |
a dfm object |
measure |
a list of lexical diversity measures. |
log.base |
a numeric value defining the base of the logarithm (for measures using logs) |
MATTR_window |
a numeric value defining the size of the moving window for computation of the Moving-Average Type-Token Ratio (Covington & McFall, 2010) |
MSTTR_segment |
a numeric value defining the size of the each segment for the computation of the the Mean Segmental Type-Token Ratio (Johnson, 1944) |
compute_lexdiv_dfm_stats in an internal function that
computes the lexical diversity measures from a dfm input.
compute_lexdiv_tokens_stats in an internal function that
computes the lexical diversity measures from a dfm input.
a data.frame with a document column containing the
input document name, followed by columns with the lexical diversity
statistic, in the order in which they were supplied as the measure
argument.
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