Description Usage Arguments Value Author(s) References Examples
The features of two objects, usually a partition defining a corpus of interest, and a partition defining a reference corpus are compared. The most important purpose is term extraction.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 | ## S4 method for signature 'partition'
compare(x, y, included = FALSE, method = "chisquare",
verbose = FALSE)
## S4 method for signature 'partitionBundle'
compare(x, y, included = FALSE,
method = "chisquare", verbose = TRUE, mc = getOption("polmineR.mc"),
progress = FALSE)
## S4 method for signature 'cooccurrences'
compare(x, y, included = FALSE, method = "ll",
mc = TRUE, verbose = TRUE)
## S4 method for signature 'ngrams'
compare(x, y, included = FALSE, method = "chisquare",
verbose = TRUE, ...)
|
x |
a partition or partitionBundle object |
y |
a partition object, it is assumed that the coi is a subcorpus of ref |
included |
TRUE if coi is part of ref, defaults to FALSE |
method |
the statistical test to apply (chisquare or log likelihood) |
verbose |
logical, defaults to TRUE |
mc |
logical, whether to use multicore |
progress |
logical |
... |
further parameters |
The function returns a data frame with the following structure: - absolute frequencies in the first row - ...
Andreas Blaette
Manning / Schuetze ...
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 | ## Not run:
use(polmineR.sampleCorpus)
kauder <- partition("PLPRBTTXT", text_name="Volker Kauder", pAttribute="word")
all <- partition("PLPRBTTXT", text_date=".*", regex=TRUE, pAttribute="word")
terms_kauder <- compare(kauder, all, included=TRUE)
top100 <- subset(terms_kauder, rank_chisquare <= 100)
## End(Not run)
## Not run:
use(polmineR.sampleCorpus)
byName <- partitionBundle("PLPRBTTXT", sAttribute="text_name")
byName <- enrich(byName, pAttribute="word")
all <- partition("PLPRBTTXT", text_date=".*", regex=TRUE, pAttribute="word")
result <- compare(byName, all, included=TRUE, progress=TRUE)
dtm <- as.DocumentTermMatrix(result, col="chisquare")
## End(Not run)
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