tm_reduce | R Documentation |
Fold multiple transformations (mappings) into a single one.
tm_reduce(x, tmFuns, ...)
x |
A corpus. |
tmFuns |
A list of tm transformations. |
... |
Arguments to the individual transformations. |
A single tm transformation function obtained by folding tmFuns
from right to left (via Reduce(..., right = TRUE)
).
Reduce
for R's internal folding/accumulation mechanism, and
getTransformations
to list available transformation
(mapping) functions.
data(crude) crude[[1]] skipWords <- function(x) removeWords(x, c("it", "the")) funs <- list(stripWhitespace, skipWords, removePunctuation, content_transformer(tolower)) tm_map(crude, FUN = tm_reduce, tmFuns = funs)[[1]]
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